Highly pure green light emission of perovskite CsPbBr 3 quantum dots and their application for green light-emitting diodes

All-inorganic perovskite CsPbBr quantum dots (QDs) with an emission peak of around 520 nm were synthesized by a hot-injection method, and were systematically studied as green phosphor for light-emitting diodes (LEDs). Highly pure green light with an emission peak of 534 nm and a full-width at half-m...

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Published inOptics express Vol. 24; no. 13; p. 15071
Main Authors Li, Cunlong, Zang, Zhigang, Chen, Weiwei, Hu, Zhiping, Tang, Xiaosheng, Hu, Wei, Sun, Kuan, Liu, Xianming, Chen, Weimin
Format Journal Article
LanguageEnglish
Published United States 27.06.2016
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Summary:All-inorganic perovskite CsPbBr quantum dots (QDs) with an emission peak of around 520 nm were synthesized by a hot-injection method, and were systematically studied as green phosphor for light-emitting diodes (LEDs). Highly pure green light with an emission peak of 534 nm and a full-width at half-maximum (FWHM) about 20 nm was achieved using CsPbBr QDs and GaN LEDs. Commission Internationale Ed I'Eclairage coordinate of the fabricated green LEDs was (0.203, 0.757). Compared to GaN LEDs, the current-voltage characteristic of the green LED did not show any degradation. Moreover, the green LEDs displayed a luminous efficiency of 31.92 lm/W under an injection current of 10 mA.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.24.015071