Search results for: LIGHT-EMITTING DIODES

• Optical materials for organic light emitting diodes

  Publication

  • J. Kalinowski

  - OPTICAL MATERIALS - Year 2008

  W pracy dokonano przeglądu materiałów stosowanych w organicznych diodach elektroluminescencyjnych.

• Emission mechanisms in organic light-emitting diodes

  Publication

  • J. Kalinowski

  - Year 2005

  Glównym przedmiotem opracowania jest powiązanie optycznych i elektrycznych charakterystyk organicznych diod elektroluminescencyjnych. Szczególną uwagę zwrócono na występowanie różnych rodzajów stanów wzbudzenia elektronowego prowadzących do wydajnego świecenia diod elektroluminescencyjnych.

• Organic light-emitting diodes. Principles, characteristics and processes.

  Publication

  • J. Kalinowski

  - Year 2004

  Jest to pierwsze monograficzne opracowanie zjawiska elektroluminescencji w organicznych ciałach stałych. W sześciu rozdziałach książki opisano między innymi wytwarzanie stanów wzbudzonych w wyniku rekombinacji ładunku, sposoby zaniku stanów wzbudzonych i ich rozkład przestrzenny, elektryczne i optyczne własności organicznych diod elektroluminescencyjnych oraz procesy warunkujące wydajne świecenie takich diod.

• Photophysical processes in the selected white organic light-emitting diodes

  Publication

  • W. Mróz

  - Year 2017

  The first part discusses history of organic emitters, the scope of the work, phenomena in molecular systems, types of architectures in OLEDs, types of OLEDs emitting white light with examples from the literaturę and a description of the parameters chcracterizing LEDs. The second part describes materials, production of the samples, the measurement systems and results. In chapter 8.1 the results for the OLEDs based on emission from...

  Full text available to download

• Structural organization of video informative systems on light-emitting diodes

  Publication

  • G. Doroshchenkov
  • M. Tarnovskyi
  • R. Romaniuk
  • P. Komada
  • K. Nurseitova
  • R. S. Romaniuk

  - Year 2019

  Full text to download in external service

• High Color Rendering Index of Rb2GeF6:Mn4+ for Light-Emitting Diodes

  Publication

  • W. Wu
  • M. Fang
  • W. Zhou
  • T. Lesniewski
  • S. Mahlik
  • M. Grinberg
  • M. Brik
  • H. Sheu
  • B. Cheng
  • J. Wang
  • R. Liu

  - CHEMISTRY OF MATERIALS - Year 2017

  Full text to download in external service

• Highly efficient exciplex phosphorescence from organic light-emitting diodes

  Publication

  • D. Virgili
  • M. Cocchi
  • V. Fattori
  • C. Sabatini
  • J. Kalinowski
  • J. A. G. Williams

  - CHEMICAL PHYSICS LETTERS - Year 2006

  W pracy badano fluorescencję ekscypleksową w układzie dendrymer aminowy m-MTDATA(donor elektronu):fenantrolina BPT (akceptor) oraz fosforescencję ekscypleksową w układzie m-MTDATA:organiczny kompleks platyny PtL2Cl. Opisano konstrukcję dwuwarstwowej diody elektrofosforescencyjnej o kwantowej (użytecznej) wydajności świecenia 2.4%.

• Light emitting diodes optimisation for secondary metabolites production by Droseraceae plants

  Publication

  • K. Siatkowska
  • M. Chraniuk
  • P. Bollin
  • R. Banasiuk

  - Journal of Photochemistry and Photobiology B: Biology - Year 2021

  Full text to download in external service

• Hydrogen-Containing Na3HTi1–xMnxF8 Narrow-Band Phosphor for Light-Emitting Diodes

  Publication

  • M. Fang
  • T. Yang
  • T. Lesniewski
  • C. Lee
  • S. Mahlik
  • M. Grinberg
  • V. Peterson
  • C. Didier
  • W. Pang
  • C. Su
  • R. Liu

  - ACS Energy Letters - Year 2019

  Full text to download in external service

• Electroabsorption in triphenylamine-based hole-transporting materials for organic light-emitting diodes

  Publication

  • W. Stampor
  • W. Mróz

  - CHEMICAL PHYSICS - Year 2007

  Metodą elektroabsorpcji (EA) badano stany wzbudzenia elektronowego w próżniowo naparowanych warstwach diamin (TPD, TAPC) i dendrymeru aminowego m-MTDATA. Widma EA amin złożonych porównano z widmem monomeru trifenylaminy (TPA). Kształt widm EA świadczy o obecności zdegenerowanych i quasi-zdegenerowanych stanów elektronowych.

• Green Light-Excitable Ce-Doped Nitridomagnesoaluminate Sr[Mg2Al2N4] Phosphor for White Light-Emitting Diodes

  Publication

  • J. Leaño
  • S. Lin
  • A. Lazarowska
  • S. Mahlik
  • M. Grinberg
  • C. Liang
  • W. Zhou
  • M. Molokeev
  • V. Atuchin
  • Y. Tsai... and 3 others

  - CHEMISTRY OF MATERIALS - Year 2016

  Full text to download in external service

• Chromium(III)-Doped Fluoride Phosphors with Broadband Infrared Emission for Light-Emitting Diodes

  Publication

  • C. Lee
  • Z. Bao
  • M. Fang
  • T. Lesniewski
  • S. Mahlik
  • M. Grinberg
  • G. Leniec
  • S. Kaczmarek
  • M. Brik
  • Y. Tsai... and 2 others

  - INORGANIC CHEMISTRY - Year 2020

  Full text to download in external service

• Probing Local Structural Changes by Sharp Luminescent Infrared Nanophosphor for Application in Light-Emitting Diodes

  Publication

  • D. Kreft
  • S. Mahlik
  • N. Majewska
  • M. Fang
  • H. Jia-yu
  • R. Chung
  • S. Hwo-shuenn
  • L. Jyh-fu

  - CHEMISTRY OF MATERIALS - Year 2022

  Cr3+-doped infrared phosphors are promising candidates for next-generation phosphor-converted infrared light-emitting diodes (LEDs) because they can, in principle, tune and convert the luminescence spectra from an LED chip. However, most studies focus on broad-band Cr3+-doped phosphors, and the control mechanism of Cr3+-doped phosphors with sharp line emissions remains ambiguous. Here, we report LiGa5(1–x)Al5xO8:Cr3+ phosphors...

  Full text to download in external service

• Excimer-based red-infrared organic light emitting diodes with very high quantum efficiency

  Publication

  • M. Cocchi
  • J. Kalinowski
  • D. Virgili
  • J. A. G. Williams

  - APPLIED PHYSICS LETTERS - Year 2008

  W pracy opisano konstrukcję wydajnej organicznej ekscymerowej diody EL emitującej światło czerwone i podczerwone z wykorzystaniem organicznego kompleksu platyny.

  Full text available to download

• Linking Macro- and Micro-structural Analysis with Luminescence Control in Oxynitride Phosphors for Light-Emitting Diodes

  Publication

  • M. Fang
  • J. Lin
  • W. Huang
  • N. Majewska
  • J. Barzowska
  • S. Mahlik
  • W. Pang
  • J. Lee
  • H. Sheu
  • R. Liu

  - CHEMISTRY OF MATERIALS - Year 2021

  Full text to download in external service

• Hidden Structural Evolution and Bond Valence Control in Near-Infrared Phosphors for Light-Emitting Diodes

  Publication

  • M. Fang
  • K. Chen
  • N. Majewska
  • T. Leśniewski
  • S. Mahlik
  • G. Leniec
  • S. Kaczmarek
  • C. Yang
  • K. Lu
  • H. Sheu
  • R. Liu

  - ACS Energy Letters - Year 2021

  Full text to download in external service

• High-Performance NaK2Li[Li3SiO4]4:Eu Green Phosphor for Backlighting Light-Emitting Diodes

  Publication

  • M. Fang
  • C. Mariano
  • K. Chen
  • J. Lin
  • Z. Bao
  • S. Mahlik
  • T. Lesniewski
  • K. Lu
  • Y. Lu
  • Y. Wu... and 5 others

  - CHEMISTRY OF MATERIALS - Year 2021

  Full text to download in external service

• Narrow Red Emission Band Fluoride Phosphor KNaSiF6:Mn4+ for Warm White Light-Emitting Diodes

  Publication

  • Y. Jin
  • M. Fang
  • M. Grinberg
  • S. Mahlik
  • T. Lesniewski
  • M. Brik
  • G. Luo
  • J. Lin
  • R. Liu

  - ACS Applied Materials & Interfaces - Year 2016

  Full text to download in external service

• Multi-Site Cation Control of Ultra-Broadband Near-Infrared Phosphors for Application in Light-Emitting Diodes

  Publication

  • G. Guzman
  • V. Rajendran
  • Z. Bao
  • M. Fang
  • W. Pang
  • S. Mahlik
  • T. Lesniewski
  • M. Grinberg
  • M. Molokeev
  • G. Leniec... and 6 others

  - INORGANIC CHEMISTRY - Year 2020

  Full text to download in external service

• Electromodulation of fluorescence in hole-transporting materials for organic light-emitting diodes. Part II: Straburst amines

  Publication

  • W. Stampor

  - Year 2005

  Praca jest kontynuacją artykułu, który został opublikowany wChem. Phys. vol. 256 (2000) s. 351-362. Zaobserwowano silne wygaszenie fluorescencji w dendrymerach aminowych zbudowanych na bazie trifenyloaminy. Efekt ten został przypisany rozpadowi stanów emitujących światło pod działaniem silnego pola elektrycznego.

• Aluminate Red Phosphor in Light-Emitting Diodes: Theoretical Calculations, Charge Varieties, and High-Pressure Luminescence Analysis

  Publication

  • N. Zhang
  • Y. Tsai
  • M. Fang
  • C. Ma
  • A. Lazarowska
  • S. Mahlik
  • M. Grinberg
  • C. Chiang
  • W. Zhou
  • J. Lin... and 4 others

  - ACS Applied Materials & Interfaces - Year 2017

  Full text to download in external service

• Penetrating Biological Tissue Using Light-Emitting Diodes with a Highly Efficient Near-Infrared ScBO3:Cr3+ Phosphor

  Publication

  • M. Fang
  • P. Huang
  • Z. Bao
  • N. Majewska
  • T. Leśniewski
  • S. Mahlik
  • M. Grinberg
  • G. Leniec
  • S. Kaczmarek
  • C. Yang... and 3 others

  - CHEMISTRY OF MATERIALS - Year 2020

  Full text to download in external service

• High-electric-field quantum yield roll-off in efficient europium chelates-based light-emitting diodes

  Publication

  • J. Kalinowski
  • W. Stampor
  • M. Cocchi
  • D. Virgili
  • V. Fattori

  - Year 2005

  Skonstruowano dwuwarstwowe organiczne diody EL, w których warstwa transportująca dziury była domieszkowana organicznymi kompleksami europu. Maksymalna kwantowa wydajność świecenia takich diod osiągała w polu elektrycznym 1MV/cm wartość 5% foton/elektron. Wysokopolowy spadek kwantowej wydajności świecenia zinterpretowano na gruncie modelu Onsagera dysocjacji stanów emitujących.

• Chemical Control of SrLi(Al1–xGax)3N4:Eu2+ Red Phosphors at Extreme Conditions for Application in Light-Emitting Diodes

  Publication

  • M. Fang
  • S. Meng
  • N. Majewska
  • T. Leśniewski
  • S. Mahlik
  • M. Grinberg
  • H. Sheu
  • R. Liu

  - CHEMISTRY OF MATERIALS - Year 2019

  Full text to download in external service

• Application of low-cost Gallium Arsenide light-emitting-diodes as kerma dosemeter and fluence monitor for high-energy neutrons

  Publication

  • B. Mukherjee
  • S. Simrock
  • J. Khachan
  • D. Rybka
  • R. Romaniuk
  • R. S. Romaniuk

  - RADIATION PROTECTION DOSIMETRY - Year 2007

  Full text to download in external service

• Highly efficient organic electrophosphorescent light-emitting diodes with a reduced quantum efficiency roll off at large current densities.

  Publication

  • M. Cocchi
  • V. Fattori
  • D. Virgili
  • C. Sabatini
  • P. Di Marco
  • M. Maestri
  • J. Kalinowski

  - Year 2004

  W pracy opisano diody elektrofosforescencyjne zbudowane na bazie organicznych komplesów platyny PtOEP oraz Pt(thpy)2. Pokazano, ze mechanizmem ograniczjącym wydajność świecenia tych diod w zakresiedużych prądów elektycznych jest elektrycznopolowa dysocjacja ekscytonutrypletowego z transferem dziury na molekułę TPD.

• Controlling of Structural Ordering and Rigidity of β-SiAlON:Eu through Chemical Cosubstitution to Approach Narrow-Band-Emission for Light-Emitting Diodes Application

  Publication

  • X. Zhang
  • M. Fang
  • Y. Tsai
  • A. Lazarowska
  • S. Mahlik
  • T. Lesniewski
  • M. Grinberg
  • W. Pang
  • F. Pan
  • C. Liang... and 7 others

  - CHEMISTRY OF MATERIALS - Year 2017

  Full text to download in external service

• Surface-Protected High-Efficiency Nanophosphors via Space-Limited Ship-in-a-Bottle Synthesis for Broadband Near-Infrared Mini-Light-Emitting Diodes

  Publication

  • M. Fang
  • T. Li
  • W. Huang
  • C. Cheng
  • Z. Bao
  • N. Majewska
  • S. Mahlik
  • C. Yang
  • K. Lu
  • G. Leniec... and 3 others

  - ACS Energy Letters - Year 2021

  Full text to download in external service

• Mixing of excimer and exciplex emission: A new way to improve white light emitting organic electrophosphorescent diodes

  Publication

  • J. Kalinowski
  • M. Cocchi
  • D. Virgili
  • V. Fattori
  • J. A. G. Williams

  - ADVANCED MATERIALS - Year 2007

  W pracy opisano konstrukcję wydajnych diod elektrofosforescencyjnych emitujących światło białe. Emisja diod pochodzi od trypletowych monomerów PtL2Cl, trypletowych ekscymerów (PtL2Cl:PtL2Cl) i trypletowych ekscypleksów m-MTDATA (donor elektronu):PtL2Cl (akceptor elektronu), gdzie PtL2Cl oznacza organiczny kompleks platyny (II), a m-MTDATA - dendrymer aminowy. Kwantowa wydajność EL diody wynosi 6.5% fot./e. Współrzędne charakteryzujące...

• Organic light emitting devices

  Publication

  • J. Godlewski
  • M. Franz

  - OPTO-ELECTRONICS REVIEW - Year 2007

  W pracy przedstawiono podstawowe procesy fizyczne zachodzące w organicznych emiterach elektroluminescencyjnych oraz parametry techniczne tego typu układów.

  Full text available to download

• Determination of the width of the carrier recombination zone in organiclight emitting diodes.

  Publication

  • J. Kalinowski
  • L. Palilis
  • W. Kim
  • Z. H. Kafafi

  - EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY - Year 2003

  W pracy mierzono kwantową wydajność elektroluminescencji w diodach dwuwarstwowych z różną grubością emitera w postaci warstwy hydroksychinolinowego kompleksu aluminium (Alq3). Stwierdzono, że szerokość strefy rekombinacji ładunku maleje ze wzrostem natężenia pola elektrycznego od 70 nm(dla E=0.75MV/cm do 40 nm (dla E=1.MV/cm).

• Asynchronous Charge Carrier Injection in Perovskite Light-Emitting Transistors

  Publication

  • M. Klein
  • K. Blecharz
  • B. Hao, Wei
  • A. Bruno
  • C. Soci

  - Advanced Electronic Materials - Year 2023

  Unbalanced mobility and injection of charge carriers in metal-halide perovskite light-emitting devices pose severe limitations to the efficiency and response time of the electroluminescence. Modulation of gate bias in methylammonium lead iodide light-emitting transistors has proven effective in increasing the brightness of light emission up to MHz frequencies. In this work, a new approach is developed to improve charge carrier...

  Full text available to download

• Chromium Ion Pair Luminescence: A Strategy in Broadband Near-Infrared Light-Emitting Diode Design

  Publication

  • V. Rajendran
  • M. Fang
  • W. Huang
  • N. Majewska
  • T. Lesniewski
  • S. Mahlik
  • G. Leniec
  • S. Kaczmarek
  • W. Pang
  • V. Peterson... and 3 others

  - JOURNAL OF THE AMERICAN CHEMICAL SOCIETY - Year 2021

  Full text to download in external service

• Ultra-Broadband Phosphors Converted Near-Infrared Light Emitting Diode with Efficient Radiant Power for Spectroscopy Applications

  Publication

  • V. Rajendran
  • T. Lesniewski
  • S. Mahlik
  • M. Grinberg
  • G. Leniec
  • S. Kaczmarek
  • W. Pang
  • Y. Lin
  • K. Lu
  • C. Lin... and 3 others

  - ACS Photonics - Year 2019

  Full text to download in external service

• Chromium Cluster Luminescence: Advancing Near‐Infrared Light‐Emitting Diode Design for Next‐Generation Broadband Compact Light Sources

  Open Research Data

  open access

  • M. Kamiński
  • S. Mahlik
  • T. Leśniewski

  In modern technology devices, an energy-saving miniature near-infrared (NIR) light source plays a critical role in non-destructive, non-invasive sensing applications and further advancement of technology. This dataset reports the broadband NIR luminescence of Cr3+ clusters for designing phosphor-converted NIR light-emitting diodes as an alternative...

• Exciton quenching in emitter blends for organic light emitting devices probed by electric field-dependent time-resolved luminescence

  Publication

  • J. Kalinowski
  • J. Mężyk
  • F. Meinardi
  • R. Tubino
  • M. Cocchi
  • D. Virgili

  - JOURNAL OF CHEMICAL PHYSICS - Year 2008

  W pracy badano mechanizm wygaszania ekscytonów w układzie dwuamina TPD:organiczny kompleks Eu:matryca TPD przez pomiar zaniku fotoluminescencji w zewnętrznym polu elektrycznym.

  Full text available to download

• Synthesis and structural, electrochemical and photophysical studies of triferrocenyl-substituted 1,3,5-triphenylbenzene: a cyan-light emitting molecule showing aggregation-induced enhanced emission

  Publication

  • A. Kasprzak
  • P. Guńka
  • A. Kowalczyk
  • A. Nowicka

  - DALTON TRANSACTIONS - Year 2020

  Full text to download in external service

• Unraveling Luminescent Energy Transfer Pathways: Futuristic Approach of Miniature Shortwave Infrared Light-Emitting Diode Design

  Open Research Data

  open access

  • M. Kamiński
  • S. Mahlik
  • M. Grzegorczyk

  Phosphor-converted shortwave infrared phosphor light-emitting diodes (pc-SWIR LEDs, 900–1700 nm) are promising next-generation portable light sources for spectroscopy, security, optical communication, and medical applications. A typical design strategy involves energy transfer from Cr3+ to Ni2+, and thus, energy transfer from Cr3+–Cr3+ pairs to Ni2+...

• Application of the Heavy-Atom Effect for (Sub)microsecond Thermally Activated Delayed Fluorescence and an All-Organic Light-Emitting Device with Low-Efficiency Roll-off

  Publication

  • M. Mońka
  • S. Gogoc
  • K. Kozakiewicz
  • V. Ievtukhov
  • D. Grzywacz
  • O. Ciupak
  • A. Kubicki
  • P. Bojarski
  • P. Data
  • I. E. Serdiuk

  - ACS Applied Materials & Interfaces - Year 2024

  Thefeatureof abundantandenvironmentallyfriendlyheavyatoms(HAs)like bromineto acceleratespin-forbiddentransitionsin organicmoleculeshas beenknownforyears.In combinationwiththe easinessof incorporation,brominederivativesof organicemittersshowingthermallyactivateddelayedfluorescence(TADF)emergeas a cheapand efficientsolutionforthe slowreverseintersystemcrossing(rISC)problemin suchemittersand strongefficiencyroll-offof all-organiclight-emittingdiodes(OLEDs).Here,we...

  Full text available to download

• Electrical and noise responses of Graphene-Silicon Schottky diodes decorated with Au nanoparticles for light-enhanced sensing of organic gases

  Open Research Data

  open access

  • K. Drozdowska
  • J. Smulko

  Graphene-Silicon Schottky junctions decorated with Au nanoparticles were used for light-enhanced detection of organic tetrahydrofuran and chloroform. Au nanoparticles exhibited localized surface plasmon resonance (LSPR) in the range of yellow light; thus yellow LED (wavelength of 592 nm) was utilized to induce the plasmonic effect, that increased the...

• Light box for investigation of characteristics of optoelectronics detectors

  Publication

  • A. Szreder
  • A. Mazikowski

  - Year 2017

  In this paper, a light box for investigation of characteristics of optoelectronic detectors is described. The light box consists of an illumination device, an optical power sensor and a mechanical enclosure. The illumination device is based on four types of high-power light emitting diodes (LED): white light, red, green and blue. The illumination level can be varied for each LED independently by the driver and is measured by optical...

  Full text to download in external service

• Evaluation of cathode materials for electrochemical photocatalyst deposition

  Publication

  • A. Haenel

  - Year 2015

  Electrochemical deposition of photocatalyst, especially TiO2, onto several cathode materials was investigated and evaluated. The deposited films were characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectrometer (EDX) and electrochemical measurements. Photocatalytic activity was determined by the decomposition of cyclohexane in air by irradiation with ultraviolet light emitting diodes. It was found that...

  Full text to download in external service

• NOBLE METAL MODIFIED TiO2 FOR PHOTOCATALYTIC AIR PURIFICATION

  Publication

  • M. Klein
  • E. Grabowska
  • A. Zaleska-Medynska

  - Physicochemical Problems of Mineral Processing - Year 2015

  TiO2 was surface modified with silver, gold, palladium and platinum ion clusters to improve its photocatalytic activity. The effect of metal content, the kind of dopant used during preparation procedure on the photoactivity were investigated. in toluene removal which was used as a model volatile organic compound. Toluene, at the concentration of about 100 ppm, was irradiated over noble metal modified TiO2 using light-emitting diodes...

  Full text available to download

• The luminescence study of Ca14Zn6Ga10−xMnxO35 coumpounds.

  Open Research Data

  open access

  • N. Majewska
  • S. Mahlik
  • T. Leśniewski
  • M. Grzegorczyk

  Manganese in the pentavalent state (Mn 5+) is both rare and central in materials exhibiting narrow-band near-infrared (NIR) emission and is highly sought after for phosphor-converted light-emitting diodes as promising candidates for future miniature solid-state NIR light source. We develop the Ca 14 Zn 6 Ga 10−x Mn x O 35 (x = 0.3, 0.5, 1.0, 1.25, 1.5,...

• Effects of UV light irradiation on fluctuation enhanced gas sensing by carbon nanotube networks

  Publication

  • K. Drozdowska
  • A. Rehman
  • A. Krajewska
  • D. V. Lioubtchenko
  • K. Pavłov
  • S. Rumyantsev
  • J. Smulko
  • G. Cywiński

  - SENSORS AND ACTUATORS B-CHEMICAL - Year 2022

  The exceptionally large active surface-to-volume ratio of carbon nanotubes makes it an appealing candidate for gas sensing applications. Here, we studied the DC and low-frequency noise characteristics of a randomly oriented network of carbon nanotubes under NO2 gas atmosphere at two different wavelengths of the UV light-emitting diodes. The UV irradiation allowed to sense lower concentrations of NO2 (at least 1 ppm) compared to...

  Full text available to download

• KTaO3-based nanocomposites for air treatment

  Publication

  • A. Zaleska-Medynska
  • A. Malankowska
  • M. Marchelek
  • B. Bajorowicz
  • P. Mazierski
  • T. Klimczuk

  - Year 2014

  The advantage is that photocatalytic methods allow removing VOCs, NOx, SO2, deodorants, and microorganisms at the same system. The new third generation of photoactive materials activated by low powered and low cost irradiation sources (such as LEDs or black fluorescent UV lamps) can be used as photocatalysts in air purification systems. A series of single semiconductors and their nanocomposites combination were prepared using hydrothermal...

• Design and implementation of an illumination system to mimic skyglow at ecosystem level in a large‐scale lake enclosure facility

  Publication

  • A. Jechow
  • G. Schreck
  • C. C. M. Kyba
  • S. A. Berger
  • L. Thuile Bistarelli
  • M. Bodenlos
  • M. O. Gessner
  • H. Grossart
  • F. Kupprat
  • J. C. Nejstgaard... and 10 others

  - Scientific Reports - Year 2021

  Light pollution is an environmental stressor of global extent that is growing exponentially in area and intensity. Artificial skyglow, a form of light pollution with large range, is hypothesized to have environmental impact at ecosystem level. However, testing the impact of skyglow at large scales and in a controlled fashion under in situ conditions has remained elusive so far. Here we present the first experimental setup to mimic...

  Full text available to download

• Various types of semiconductor photocatalysts modified by CdTe QDs and Pt NPs for toluene photooxidation in the gas phase under visible light

  Publication

  • M. Marchelek
  • E. Grabowska
  • T. Klimczuk
  • W. Lisowski
  • A. Zaleska-Medynska

  - APPLIED SURFACE SCIENCE - Year 2017

  A novel synthesis process was used to prepare TiO2 microspheres, TiO2 P-25, SrTiO3 and KTaO3 decorated by CdTe QDs and/or Pt NPs. The effect of semiconductor matrix, presence of CdTe QDs and/or Pt NPs on the semiconductor surface as well as deposition technique of Pt NPs (photodeposition or radiolysis) on the photocatalytic activity were investigated. The as-prepared samples were characterized by X-ray powder diffractometry (XRD),...

  Full text to download in external service

• Photoconduction and magnetic field effect on photoconduction in hole-transporting star-burst amine (m-MTDATA) films

  Publication

  • D. K. Pelczarski
  • P. J. Grygiel
  • M. Miśnik
  • W. Stampor

  - ORGANIC ELECTRONICS - Year 2015

  Photoconduction and magnetic field effect on photoconduction have been investigated as a function of electric field strength, excitation light intensity and wavelength in vacuum evaporated films of m-MTDATA (4,4′,4″-tris(N-(3-methylphenyl)-N-phenylylamino) triphenylamine), the starburst amine commonly used as hole-transporting material in organic light-emitting diodes. The photocurrent is found to be generated by the singlet exciton...

  Full text to download in external service

• KTaO3-based nanocomposites for air treatment

  Publication

  • M. Martyna
  • B. Bajorowicz
  • P. Mazierski
  • A. Malankowska
  • T. Klimczuk
  • M. J. Winiarski
  • N. Fijałkowska
  • A. Zaleska-Medynska

  - CATALYSIS TODAY - Year 2015

  A series of single semiconductors and their nanocomposites combination (such as KTaO3 + CdSe + SrTiO3; KTaO3 + CdS +WO3; KTaO3 + CdS + MoS2) were prepared using hydrothermal route. Photocatalytic activity of as-prepared nanocomposites was estimated by photocatalytic degradation of toluene in the gas phase using light-emitting diodes (LEDs, 375 nm) in four subsequent cycles. The nanocomposites were characterized by scanning electron...

  Full text to download in external service