High brightness formamidinium lead bromide perovskite nanocrystal light emitting devices

被引：152

作者：

Perumal, Ajay ^{[1
]}

Shendre, Sushant ^{[1
]}

Li, Mingjie ^{[2
]}

Tay, Yong Kang Eugene ^{[2
]}

Sharma, Vijay Kumar ^{[1
,2
,3
]}

Chen, Shi ^{[2
]}

Wei, Zhanhua ^{[2
]}

Liu, Qing ^{[4
]}

Gao, Yuan ^{[1
]}

Buenconsejo, Pio John S. ^{[4
]}

Tan, Swee Tiam ^{[1
]}

Gan, Chee Lip ^{[4
]}

Xiong, Qihua ^{[2
]}

Sum, Tze Chien ^{[2
]}

Demir, Hilmi Volkan ^{[1
,2
,3
]}

机构：

[1] Nanyang Technol Univ, Sch Elect & Elect Engn, LUMINOUS Ctr Excellence Semicond Lighting & Displ, Singapore 639798, Singapore

[2] Nanyang Technol Univ, Sch Math & Phys Sci, Div Phys & Appl Phys, Singapore 637371, Singapore

[3] Bilkent Univ, Dept Phys, Dept Elect & Elect Engn, UNAM Inst Mat Sci & Nanotechnol, TR-06800 Ankara, Turkey

[4] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

来源：

SCIENTIFIC REPORTS | 2016年 / 6卷

基金：

新加坡国家研究基金会;

关键词：

HALIDE PEROVSKITES; ANION-EXCHANGE; QUANTUM DOTS; SOLAR-CELLS; LAYERED-PEROVSKITE; NANOWIRE LASERS; HIGH-EFFICIENCY; LOW-COST; DIODES; ELECTROLUMINESCENCE;

D O I：

10.1038/srep36733

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Formamidinium lead halide (FAPbX(3)) has attracted greater attention and is more prominent recently in photovoltaic devices due to its broad absorption and higher thermal stability in comparison to more popular methylammonium lead halide MAPbX(3). Herein, a simple and highly reproducible room temperature synthesis of device grade high quality formamidinium lead bromide CH(NH2)(2)PbBr3 (FAPbBr(3)) colloidal nanocrystals (NC) having high photoluminescence quantum efficiency (PLQE) of 55-65% is reported. In addition, we demonstrate high brightness perovskite light emitting device (Pe-LED) with these FAPbBr(3) perovskite NC thin film using 2,2', 2 ''-(1,3,5-Benzinetriyl)-tris(1-phenyl-1-H- benzimidazole) commonly known as TPBi and 4,6-Bis(3,5-di(pyridin-3-yl)phenyl)-2-methylpyrimidine (B3PYMPM) as electron transport layers (ETL). The Pe-LED device with B3PYMPM as ETL has bright electroluminescence of up to 2714 cd/m(2), while the Pe-LED device with TPBi as ETL has higher peak luminous efficiency of 6.4 cd/A and peak luminous power efficiency of 5.7 lm/W. To our knowledge this is the first report on high brightness light emitting device based on CH(NH2)(2)PbBr3 widely known as FAPbBr(3) nanocrystals in literature.

引用

页数：10