Highly efficient planar perovskite solar cells through band alignment engineering

被引：1069

作者：

Baena, Juan Pablo Correa ^{[1
]}

Steier, Ludmilla ^{[2
]}

Tress, Wolfgang ^{[2
,3
]}

Saliba, Michael ^{[3
]}

Neutzner, Stefanie ^{[4
,6
]}

Matsui, Taisuke ^{[5
]}

Giordano, Fabrizio ^{[2
]}

Jacobsson, T. Jesper ^{[1
]}

Kandada, Ajay Ram Srimath ^{[4
]}

Zakeeruddin, Shaik M. ^{[2
]}

Petrozza, Annamaria ^{[4
]}

Abate, Antonio ^{[2
]}

Nazeeruddin, Mohammad Khaja ^{[3
]}

Graetzel, Michael ^{[2
]}

Hagfeldt, Anders ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Lab Photomol Sci, Inst Chem Sci & Engn, CH-1015 Lausanne, Switzerland

[2] Ecole Polytech Fed Lausanne, Lab Photon & Interfaces, Inst Chem Sci & Engn, CH-1015 Lausanne, Switzerland

[3] Ecole Polytech Fed Lausanne, Grp Mol Engn Funct Mat, Inst Chem Sci & Engn, CH-1015 Lausanne, Switzerland

[4] Ist Italiano Tecnol, Ctr Nano Sci & Technol Polimi, I-20133 Milan, Italy

[5] Panasonic Corp, Adv Res Div, Kadoma, Osaka 5718501, Japan

[6] Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2015年 / 8卷 / 10期

基金：

瑞士国家科学基金会; 欧盟地平线“2020”;

关键词：

ANOMALOUS HYSTERESIS; HYBRID MATERIALS; ELECTRON; TRANSPORT; DOPANTS; LENGTHS; LAYER;

D O I：

10.1039/c5ee02608c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The simplification of perovskite solar cells (PSCs), by replacing the mesoporous electron selective layer (ESL) with a planar one, is advantageous for large-scale manufacturing. PSCs with a planar TiO2 ESL have been demonstrated, but these exhibit unstabilized power conversion efficiencies (PCEs). Herein we show that planar PSCs using TiO2 are inherently limited due to conduction band misalignment and demonstrate, with a variety of characterization techniques, for the first time that SnO2 achieves a barrier-free energetic configuration, obtaining almost hysteresis-free PCEs of over 18% with record high voltages of up to 1.19 V.

引用

页码：2928 / 2934

页数：7

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