Centimeter-Sized Single Crystals of Tetrahedral Manganese (II) Halide Hybrids for Wide-Color Gamut Backlighting Displays.

Autor: Cheng X; Advanced Research Institute of Multidisciplinary Sciences, School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Beijing Institute of Technology (BIT), Beijing, 100081, P. R. China., Chang X; Advanced Research Institute of Multidisciplinary Sciences, School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Beijing Institute of Technology (BIT), Beijing, 100081, P. R. China., Lin Y; Advanced Research Institute of Multidisciplinary Sciences, School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Beijing Institute of Technology (BIT), Beijing, 100081, P. R. China., Lv L; Advanced Research Institute of Multidisciplinary Sciences, School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Beijing Institute of Technology (BIT), Beijing, 100081, P. R. China., Cong L; Advanced Research Institute of Multidisciplinary Sciences, School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Beijing Institute of Technology (BIT), Beijing, 100081, P. R. China., Jia Y; Advanced Research Institute of Multidisciplinary Sciences, School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Beijing Institute of Technology (BIT), Beijing, 100081, P. R. China., Yin J; Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, 999077, P. R. China., Li J; Advanced Research Institute of Multidisciplinary Sciences, School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Beijing Institute of Technology (BIT), Beijing, 100081, P. R. China., Cui BB; Advanced Research Institute of Multidisciplinary Sciences, School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Beijing Institute of Technology (BIT), Beijing, 100081, P. R. China.
Jazyk: angličtina
Zdroj: Small (Weinheim an der Bergstrasse, Germany) [Small] 2024 May; Vol. 20 (18), pp. e2307216. Date of Electronic Publication: 2023 Dec 11.
DOI: 10.1002/smll.202307216
Abstrakt: Phosphors with narrow-band green emissions and high photoluminescent quantum efficiency (PLQY) are significantly required for backlighting displays with wider color gamut. In this work, two centimeter-sized manganese (II) halide single crystals TMG 2 MnCl 4 and TMG 2 MnBr 4 (TMG = 1,1,3,3-tetramethylguanidine) are synthesized, exhibiting bright narrow-band green emissions with high PLQYs up to 62% and 90%, respectively. The narrow-band green light emission is located at 520 nm with a full-width at half-maximum (FWHM) of only 57 nm. The photoluminescence mechanisms of two single crystals are elaborated. Two white-light-emitting diodes for backlighting displays (BD-WLEDs) based on them are fabricated, exhibiting the widest color gamut of 122% National Television Standards Committee (NTSC), and a luminous efficacy reached ≈93 lm W -1 with excellent luminescence stability at high temperatures. These properties indicate the potential applications of tetrahedral manganese (II) hybrids in wide-color gamut backlighting displays.
(© 2023 Wiley‐VCH GmbH.)
Databáze: MEDLINE
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