Low trap-state density and long carrier diffusion in organolead trihalide perovskite single crystals

被引：4503

作者：

Shi, Dong ^{[1
]}

Adinolfi, Valerio ^{[2
]}

Comin, Riccardo ^{[2
]}

Yuan, Mingjian ^{[2
]}

Alarousu, Erkki ^{[1
]}

Buin, Andrei ^{[2
]}

Chen, Yin ^{[1
]}

Hoogland, Sjoerd ^{[2
]}

Rothenberger, Alexander ^{[1
]}

Katsiev, Khabiboulakh ^{[1
]}

Losovyj, Yaroslav ^{[3
]}

Zhang, Xin ^{[4
]}

Dowben, Peter A. ^{[4
]}

Mohammed, Omar F. ^{[1
]}

Sargent, Edward H. ^{[2
]}

Bakr, Osman M. ^{[1
]}

机构：

[1] KAUST, SPERC, Thuwal 239556900, Saudi Arabia

[2] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada

[3] Indiana Univ, Dept Chem, Bloomington, IN 47405 USA

[4] Univ Nebraska, Dept Phys & Astron, Lincoln, NE 68588 USA

来源：

SCIENCE | 2015年 / 347卷 / 6221期

基金：

加拿大自然科学与工程研究理事会;

关键词：

HALIDE PEROVSKITES; MINORITY-CARRIERS; SOLAR-CELLS; SILICON; TRANSISTORS;

D O I：

10.1126/science.aaa2725

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：

The fundamental properties and ultimate performance limits of organolead trihalide MAPbX(3) (MA = CH3NH3+; X = Br- or I-) perovskites remain obscured by extensive disorder in polycrystalline MAPbX(3) films. We report an antisolvent vapor-assisted crystallization approach that enables us to create sizable crack-free MAPbX(3) single crystals with volumes exceeding 100 cubic millimeters. These large single crystals enabled a detailed characterization of their optical and charge transport characteristics. We observed exceptionally low trap-state densities on the order of 109 to 1010 per cubic centimeter in MAPbX(3) single crystals (comparable to the best photovoltaic-quality silicon) and charge carrier diffusion lengths exceeding 10 micrometers. These results were validated with density functional theory calculations.

引用

页码：519 / 522

页数：4

共 20 条

[1] CHARACTERIZATION OF TRAPPING STATES IN POLYCRYSTALLINE-SILICON THIN-FILM TRANSISTORS BY DEEP-LEVEL TRANSIENT SPECTROSCOPY [J].