All-Inorganic Colloidal Quantum Dot Photovoltaics Employing Solution-Phase Halide Passivation

被引：196

作者：

Ning, Zhijun ^{[1
]}

Ren, Yuan ^{[1
]}

Hoogland, Sjoerd ^{[1
]}

Voznyy, Oleksandr ^{[1
]}

Levina, Larissa ^{[1
]}

Stadler, Philipp ^{[1
]}

Lan, Xinzheng ^{[1
]}

Zhitomirsky, David ^{[1
]}

Sargent, Edward H. ^{[1
]}

机构：

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

来源：

ADVANCED MATERIALS | 2012年 / 24卷 / 47期

基金：

加拿大自然科学与工程研究理事会;

关键词：

colloidal nanoparticles; CQDs; photovoltaics; optoelectronic materials; NANOCRYSTALS; RECOMBINATION; FILMS;

D O I：

10.1002/adma.201202942

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new solution-phase halide passivation strategy to improve the electronic properties of colloidal quantum dot films is reported. We prove experimentally that the approach leads to an order-of-magnitude increase in mobility and a notable reduction in trap state density. We build solar cells having the highest efficiency (6.6%) reported using all-inorganic colloidal quantum dots. The improved photocurrent results from increased efficiency of collection of infrared-generated photocarriers. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：6295 / 6299

页数：5

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