Mesoporous Aluminum Hydroxide Synthesized by a Single-Source Precursor-Decomposition Approach as a High-Quantum-Yield Blue Phosphor for UV-Pumped White-Light-Emitting Diodes.

Chen, Bingkun; Susha, Andrei S; Reckmeier, Claas J; Kershaw, Stephen V; Wang, Yongtian; Zou, Bingsuo; Zhong, Haizheng; Rogach, Andrey L · Adv Mater · 2017

basic_science · Level V

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Abstract

Strongly emissive (photoluminescence quantum yield up to 65%), thermally stable aluminum hydroxide blue phosphors are synthesized by a single-source precursor-decomposition approach. Blue-emitting UV-pumped light-emitting diodes (LEDs) based on the aluminum hydroxide phosphor reach luminous efficiency of 27.5 lm W<sup>-1</sup> , while UV-white-LEDs integrating blue-emitting aluminum hydroxide and red-emitting CuInS<sub>2</sub> nanocrystals achieve high color-rendering-index values of 94.3 and luminous efficiency of 23.5 lm W<sup>-1</sup> .