Highly Luminescent Earth-Benign Organometallic Manganese Halide Crystals with Ultrahigh Thermal Stability of Emission from 4 to 623 K.

Autor: Tan GH; Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan., Chen YN; Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan., Chuang YT; Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan., Lin HC; Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan., Hsieh CA; Department of Photonics, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan., Chen YS; Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan., Lee TY; Department of Photonics, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan., Miao WC; Department of Electrophysics, College of Science, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan.; Semiconductor Research Center, Hon Hai Research Institute, Taipei, 11492, Taiwan., Kuo HC; Department of Photonics, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan., Chen LY; Department of Photonics, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan., Wong KT; Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan.; Institute of Atomic and Molecular Science, Academia Sinica, Taipei, 10617, Taiwan., Lin HW; Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan.; Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 30013, Taiwan.
Jazyk: angličtina
Zdroj: Small (Weinheim an der Bergstrasse, Germany) [Small] 2023 Feb; Vol. 19 (8), pp. e2205981. Date of Electronic Publication: 2022 Dec 11.
DOI: 10.1002/smll.202205981
Abstrakt: The phosphor-converted light-emitting diode (PC-LED) has become an indispensable solid-state lighting and display technologies in the modern society. Nevertheless, the use of scarce rare-earth elements and the thermal quenching (TQ) behavior are still two most crucial issues yet to be solved. Here, this work successfully demonstrates a highly efficient and thermally stable green emissive MnI 2 (XanPO) crystals showing a notable photoluminescence quantum yield (PLQY) of 94% and a super TQ resistance from 4 to 623 K. This unprecedented superior thermal stability is attributed to the low electron-phonon coupling and the unique rigid crystal structure of MnI 2 (XanPO) over the whole temperature range based on the temperature-dependent photoluminescence (PL) and single crystal X-ray diffraction (SCXRD) analyses. Considering these appealing properties, green PC-LEDs with a power efficacy of 102.5 lm W -1 , an external quantum efficiency (EQE) of 22.7% and a peak luminance up to 7750 000 cd m -2 are fabricated by integrating MnI 2 (XanPO) with commercial blue LEDs. Moreover, the applicability of MnI 2 (XanPO) in both micro-LEDs and organic light-emitting diodes (OLEDs) is also demonstrated. In a nutshell, this study uncovers a candidate of highly luminescent and TQ resistant manganese halide suitable for a variety of emission applications.
(© 2022 Wiley-VCH GmbH.)
Databáze: MEDLINE
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