Epitaxial 1D electron transport layers for high-performance perovskite solar cells

被引：45

作者：

Han, Gill Sang ^{[1
,2
]}

Chung, Hyun Suk ^{[1
]}

Kim, Dong Hoe ^{[3
]}

Kim, Byeong Jo ^{[1
]}

Lee, Jin-Wook ^{[4
,5
]}

Park, Nam-Gyu ^{[4
,5
]}

Cho, In Sun ^{[6
]}

Lee, Jung-Kun ^{[2
]}

Lee, Sangwook ^{[7
]}

Jung, Hyun Suk ^{[1
]}

机构：

[1] Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea

[2] Univ Pittsburgh, Dept Mech Engn & Mat Sci, Pittsburgh, PA 15261 USA

[3] Natl Renewable Energy Lab, Chem & Mat Sci Ctr, Golden, CO 80401 USA

[4] Sungkyunkwan Univ, Sch Chem Engn, Suwon 440746, South Korea

[5] Sungkyunkwan Univ, Dept Energy Sci, Suwon 440746, South Korea

[6] Ajou Univ, Dept Mat Sci & Engn & Energy Syst Res, Suwon 443749, South Korea

[7] Kyungpook Natl Univ, Sch Mat Sci & Engn, Taegu 41566, South Korea

来源：

NANOSCALE | 2015年 / 7卷 / 37期

基金：

新加坡国家研究基金会;

关键词：

NANOCRYSTALLINE TIO2 FILMS; CHARGE-COLLECTION; ZNO NANOROD; RU ELECTRODE; RUTILE TIO2; LOW-COST; EFFICIENT; GROWTH; ARRAYS; DEPOSITION;

D O I：

10.1039/c5nr03476k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We demonstrate high-performance perovskite solar cells with excellent electron transport properties using a one-dimensional (1D) electron transport layer (ETL). The 1D array-based ETL is comprised of 1D SnO2 nanowires (NWs) array grown on a F:SnO2 transparent conducting oxide substrate and rutile TiO2 nanoshells epitaxially grown on the surface of the 1D SnO2 NWs. The optimized devices show more than 95% internal quantum yield at 750 nm, and a power conversion efficiency (PCE) of 14.2%. The high quantum yield is attributed to dramatically enhanced electron transport in the epitaxial TiO2 layer, compared to that in conventional nanoparticle-based mesoporous TiO2 (mp-TiO2) layers. In addition, the open space in the 1D array-based ETL increases the prevalence of uniform TiO2/perovskite junctions, leading to reproducible device performance with a high fill factor. This work offers a method to achieve reproducible, high-efficiency perovskite solar cells with high-speed electron transport.

引用

页码：15284 / 15290

页数：7

共 56 条

[11] BASIC GRAIN-BOUNDARY EFFECTS IN POLYCRYSTALLINE HETEROSTRUCTURE SOLAR-CELLS [J].