Blue-Green Color Tunable Solution Processable Organolead Chloride-Bromide Mixed Halide Perovskites for Optoelectronic Applications

被引：477

作者：

Sadhanala, Aditya ^{[1
]}

Ahmad, Shahab ^{[2
]}

Zhao, Baodan ^{[1
]}

Giesbrecht, Nadja ^{[3
,4
]}

Pearce, Phoebe M. ^{[1
]}

Deschler, Felix ^{[1
]}

Hoye, Robert L. Z. ^{[1
]}

Goedel, Karl C. ^{[1
]}

Bein, Thomas ^{[3
,4
]}

Docampo, Pablo ^{[3
,4
]}

Dutton, Sian E. ^{[1
]}

De Volder, Michael F. L. ^{[2
]}

Friend, Richard H. ^{[1
]}

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[2] Univ Cambridge, Dept Engn, Cambridge CB3 0FS, England

[3] Univ Munich, Dept Chem, D-81377 Munich, Germany

[4] Univ Munich, Ctr NanoSci, D-81377 Munich, Germany

来源：

NANO LETTERS | 2015年 / 15卷 / 09期

基金：

英国工程与自然科学研究理事会;

关键词：

Blue perovskite LED; chloride bromide perovskite; narrow FWHM; disorder; bandgap tuning; LIGHT-EMITTING-DIODES; EFFICIENT; PERFORMANCE;

D O I：

10.1021/acs.nanolett.5b02369

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Solution-processed organo-lead halide perovskites are produced with sharp, color-pure electroluminescence that can be tuned from blue to green region of visible spectrum (425-570 nm). This was accomplished by controlling the halide composition of CH3NH3Pb(BrxCl1-x)(3) [0 <= x <= 1] perovskites. The bandgap and lattice parameters change monotonically with composition. The films possess remarkably sharp band edges and a clean bandgap, with a single optically active phase. These chloride-bromide perovskites can potentially be used in optoelectronic devices like solar cells and light emitting diodes (LEDs). Here we demonstrate high color-purity, tunable LEDs with narrow emission full width at half maxima (FWHM) and low turn on voltages using thin-films of these perovskite materials, including a blue CH3NH3PbCl3 perovskite LED with a narrow emission FWHM of 5 nm.

引用

页码：6095 / 6101

页数：7

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