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

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

Abstract

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 dissociation at the illuminated Al anode/m-MTDATA interface in accordance with the 1-D Onsager mechanism and in the bulk of the sample in terms of the 3-D Onsager model of e–h pair separation. The surface component of photocurrent is magnetic field independent whereas the bulk-generated photocurrent is influenced by external magnetic field of the hyperfine coupling (HFC) as well as fine structure modulation (FSM) scales.

Citations

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Details

Category:
Articles
Type:
artykuł w czasopiśmie wyróżnionym w JCR
Published in:
ORGANIC ELECTRONICS no. 21, pages 54 - 65,
ISSN: 1566-1199
Language:
English
Publication year:
2015
Bibliographic description:
Pelczarski D., Grygiel P., Miśnik M., Stampor W.: Photoconduction and magnetic field effect on photoconduction in hole-transporting star-burst amine (m-MTDATA) films// ORGANIC ELECTRONICS. -Vol. 21, (2015), s.54-65
DOI:
Digital Object Identifier (open in new tab) 10.1016/j.orgel.2015.02.020
Verified by:
Gdańsk University of Technology

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