Size effect of lead-free halide double perovskite on luminescence property

被引：0

作者：

Peigeng Han ^{[1
,2
]}

Xue Zhang ^{[1
]}

Xin Mao ^{[1
,2
]}

Bin Yang ^{[1
,2
]}

Songqiu Yang ^{[1
]}

Zhaochi Feng ^{[3
]}

Donghui Wei ^{[4
]}

Weiqiao Deng ^{[1
,5
]}

Tnu Pullerits ^{[6
]}

Keli Han ^{[1
,5
]}

机构：

[1] State Key Laboratory of Molecular Reaction Dynamics,Dalian Institute of Chemical Physics,Chinese Academy of Science

[2] University of the Chinese Academy of Sciences

[3] State Key Laboratory of Catalysis,Dalian Institute of Chemical Physics,Chinese Academy of Science

[4] College of Chemistry and Molecular Engineering,Zhengzhou University

[5] Institute of Molecular Sciences and Engineering,Shandong University

[6] Department of Chemical Physics and Nano Lund,Chemical Center,Lund University

来源：

Science China(Chemistry) | 2019年 / 10期

关键词：

double perovskite; bulk crystals; warm white; size effect; stability;

D O I：

暂无

中图分类号：

TQ422 [光化学物质];

学科分类号：

0817 ;

摘要：

Lead-free halide double perovskites have gathered wide scientific interest since they are environmentally friendly and stable.However,compared to the lead perovskites,their optoelectronic properties are compromised.Herein we report a series of bulk lead-free mixed Bi-In halide double perovskites:Cs2AgBi1-xInxCl6（02AgBi0.125In0.875Cl6breaks the parity-forbidden transition and retains direct band gap structure,having warm-white light emission,with photoluminescence quantum efficiency（PLQE）of 70.3%,much higher than the PLQE of reported lead perovskite materials.Its exciton self-trapping dynamics is investigated.Meanwhile,the Cs2AgBi0.125In0.875Cl6nanocrystals and Cs2AgBi0.125In0.875Cl6microcrystals can be synthesized by modified hot injection and rapid cooling crystallization,respectively.The size effect of Cs2AgBi0.125In0.875Cl6is studied on the photoluminescence（PL）property.Additionally,the bulk material exhibits excellent stability on exposure to light,humidity and air for more than 3 months.It is a promising candidate as highly efficient warm white-light emitting material for road lighting.

引用

页码：1405 / 1413

页数：9

共 4 条

[1]

Saidaminov MI,Almutlaq J,Sarmah S,Dursun I,Zhumekenov AA,Begum R,Pan J,Cho N,Mohammed OF,Bakr OM. ACS Energy Lett . 2016

[2]

Volonakis G,Haghighirad AA,Milot RL,Sio WH,Filip MR,Wenger B,Johnston MB,Herz LM,Snaith HJ,Giustino F. J Phys Chem Lett . 2017

[3]

Luo J,Wang X,Li S,Liu J,Guo Y,Niu G,Yao L,Fu Y,Gao L,Dong Q,Zhao C,Leng M,Ma F,Liang W,Wang L,Jin S,Han J,Zhang L,Etheridge J,Wang J,Yan Y,Sargent E H,Tang J. Nature . 2018

[4]

Cho,H,Jeong,S.-H,Park,M.-H,Kim,Y.-H,Wolf,C,Lee,C.-L,Heo,J.H,Sadhanala,A,Myoung,N,Yoo,S,Im,S.H,Friend,R.H,Lee,T.-W. Science . 2015

← 1 →