The luminescence study of Sc2(1–x)Ga2xO3:Cr3+/4+ coumpounds - Open Research Data - Bridge of Knowledge

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The luminescence study of Sc2(1–x)Ga2xO3:Cr3+/4+ coumpounds

Description

The growing interest in the use of near-infrared (NIR) radiation for spectroscopy, optical communication, and medical applications spanning both NIR-I (700–900 nm) and NIR-II (900–1700 nm) has driven the need for new NIR light sources. NIR phosphor-converted light-emitting diodes (pc-LEDs) are expected to replace traditional lamps mainly due to their high efficiency and compact design. Broadband NIR phosphors activated by Cr3+ and Cr4+ have attracted significant research interest, offering emission across a wide range from 700 to 1700 nm. In this work, we synthesized a series of Sc2(1–x)Ga2xO3:Cr3+/4+ materials (x = 0–0.2) with broadband NIR-I (Cr3+) and NIR-II (Cr4+) emission. We observed a substantial increase in the intensity of Cr3+ (approximately 77 times) by incorporating Ga3+ ions. Additionally, our investigation revealed that energy transfer occurred between Cr3+ and Cr4+ ions. Configuration diagrams are presented to elucidate the behavior of Cr3+ and Cr4+ ions within the Sc2O3 matrix. We also observed a phase transition at a pressure of 20.2 GPa, resulting in a new unknown phase where Cr3+ luminescence exhibited a high-symmetry environment. Notably, this study presents the pressure-induced shift of NIR Cr4+ luminescence in Sc2(1–x)Ga2xO3:Cr3+/4+. The linear shifts were estimated at 83 ± 3 and 61 ± 6 cm–1/GPa before and after the phase transition. Overall, our findings shed light on the synthesis, luminescent properties, temperature, and high-pressure behavior within the Sc2(1–x)Ga2xO3:Cr3+/4+ materials. This research contributes to the understanding and potential applications of these materials in the development of efficient NIR light sources and other optical devices.

In that dataset, the raw data of excitation and emission spectra, temperature-dependent, and high-pressure dependent photoluminescence and decay profiles are provided

Related publication:

Majewska, N.; Tsai, Y.-T.; Zeng, X.-Y.; Fang, M.-H.; Mahlik, S. Advancing Near-Infrared Light Sources: Enhancing Chromium Emission through Cation Substitution in Ultra-Broadband Near-Infrared Phosphors. Chem. Mater. 2023, 35 (23), 10228–10237. https://doi.org/10.1021/acs.chemmater.3c02466.

Funding: Data were produced under the Preludium 21 research project No. 2022/45/N/ST3/00576 financed by the National Science Centre Poland.

Dataset file

Advancing Near-Infrared Light Sources.rar
12.9 MB, S3 ETag 3968257795f42574fd12836c0ae7a1b9-1, downloads: 48
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License:
Creative Commons: by 4.0 open in new tab
CC BY
Attribution
Raw data:
Data contained in dataset was not processed.
Software:
OriginLab, HPD-TA

Details

Year of publication:
2023
Verification date:
2023-12-21
Dataset language:
English
Fields of science:
  • physical sciences (Natural sciences)
DOI:
DOI ID 10.34808/8z59-k844 open in new tab
Verified by:
No verification

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