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

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

doi:10.1002/adma.201604284

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

Adv Mater. 2017 Jan;29(1). doi: 10.1002/adma.201604284. Epub 2016 Nov 9.

Authors

Bingkun Chen^{1

2}, Andrei S Susha¹, Claas J Reckmeier¹, Stephen V Kershaw¹, Yongtian Wang², Bingsuo Zou³, Haizheng Zhong³, Andrey L Rogach¹

Affiliations

¹ Department of Physics and Materials Science & Center for Functional Photonics (CFP), City University of Hong Kong, Hong Kong S.A.R.
² Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optoelectronics, Beijing Institute of Technology, Beijing, 100081, China.
³ Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing, 100081, China.

PMID: 27862427
DOI: 10.1002/adma.201604284

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^-1 , while UV-white-LEDs integrating blue-emitting aluminum hydroxide and red-emitting CuInS₂ nanocrystals achieve high color-rendering-index values of 94.3 and luminous efficiency of 23.5 lm W^-1 .

Keywords: UV-WLEDs; aluminum hydroxide; blue phosphors; single-source precursors.