Enhancement of the optical properties of CsPbBr3 perovskite nanocrystals using three different solvents

被引：6

作者：

Kang, Tae Wook ^{[1
]}

Lee, Sol ^{[1
]}

Park, Young Ji ^{[1
]}

Jeong, Gyu Jin ^{[1
,2
]}

Kim, Jong Su ^{[3
]}

Bae, Byungseo ^{[4
]}

Hwang, Jonghee ^{[1
]}

Kim, Sun Woog ^{[1
]}

机构：

[1] Korea Inst Ceram Engn & Technol, Opt & Elect Component Mat Ctr, Elect Convergence Mat Div, Jinju 52851, South Korea

[2] Gyeongsang Natl Univ, Div Mat Sci & Engn & Convergence Technol, Jinju 52828, South Korea

[3] Pukyong Natl Univ, Dept Display Sci & Engn, Busan 48513, South Korea

[4] Yeongwol Ind Promot Agcy, Adv Resources Team, 21-28 Palgoe 1 Nonggongdanji, Yeongwolgun 26240, South Korea

来源：

OPTICS LETTERS | 2020年 / 45卷 / 18期

关键词：

CESIUM LEAD HALIDE; LIGHT-EMITTING DEVICES; ANION-EXCHANGE; QUANTUM DOTS; LUMINESCENT; CSPBX3; BR; CL; EMISSION; DIODES;

D O I：

10.1364/OL.401058

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Green-emitting CsPbBr3 perovskite nanocrystals were synthesized by the modified hot-injection method using three different solvents. The produced nanocrystals showed a narrow green emission band centered at 515-520 nm with full width at half-maximum (FWHM) values of approximately 18-20 nm. The highest photoluminescence quantum yield (PLQY) was obtained for the nanocrystal sample synthesized using a paraffin liquid solvent, with a value of 70.1% under excitation at 450 nm. The CsPbBr3 nanocrystals film light-emitting diodes (LED) chip module showed a luminous efficacy of 40.7 lm/W-rad. The white LED (WLED) with green CsPbBr3 and red CsPbI3 nanocrystal films emitted bluish-white light with a high color rendering index of 89, and the luminous efficacy of the WLED reached 16.31m/W-rad. (C) 2020 Optical Society of America

引用

页码：4972 / 4975

页数：4

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