Colloidally prepared La-doped BaSnO3 electrodes for efficient, photostable perovskite solar cells

被引：1013

作者：

Shin, Seong Sik ^{[1
,2
]}

Yeom, Eun Joo ^{[1
]}

Yang, Woon Seok ^{[3
]}

Hur, Seyoon ^{[4
]}

Kim, Min Gyu ^{[5
]}

Im, Jino ^{[1
]}

Seo, Jangwon ^{[1
]}

Noh, Jun Hong ^{[1
,6
]}

Seok, Sang Il ^{[1
,3
]}

机构：

[1] Korea Res Inst Chem Technol, Div Adv Mat, 141 Gajeong Ro, Daejeon 34114, South Korea

[2] MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[3] Ulsan Natl Inst Sci & Technol, Sch Energy & Chem Engn, Perovtron Res Ctr, 50 UNIST Gil, Ulsan 44919, South Korea

[4] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151744, South Korea

[5] Pohang Accelerator Lab, Beamline Res Div, Pohang 790784, South Korea

[6] Korea Univ, Sch Civil Environm & Architectural Engn, Seoul 136713, South Korea

来源：

SCIENCE | 2017年 / 356卷 / 6334期

基金：

新加坡国家研究基金会;

关键词：

PERFORMANCE; STABILITY; LAYER; TIO2;

D O I：

10.1126/science.aam6620

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：

Perovskite solar cells (PSCs) exceeding a power conversion efficiency (PCE) of 20% have mainly been demonstrated by using mesoporous titanium dioxide (mp-TiO2) as an electron-transporting layer. However, TiO2 can reduce the stability of PSCs under illumination (including ultraviolet light). Lanthanum (La)-doped BaSnO3 (LBSO) perovskite would be an ideal replacement given its electron mobility and electronic structure, but LBSO cannot be synthesized as well-dispersible fine particles or crystallized below 500 degrees C. We report a superoxide colloidal solution route for preparing a LBSO electrode under very mild conditions (below 300 degrees C). The PSCs fabricated with LBSO and methylammonium lead iodide (MAPbI(3)) show a steady-state power conversion efficiency of 21.2%, versus 19.7% for a mp-TiO2 device. The LBSO-based PSCs could retain 93% of their initial performance after 1000 hours of full-Sun illumination.

引用

页码：167 / 171

页数：5

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