Thermodynamically stabilized β-CsPbI 3 –based perovskite solar cells with efficiencies >18%-Reference-Cited by-同舟云学术

Thermodynamically stabilized β-CsPbI 3 –based perovskite solar cells with efficiencies >18%

Published:2019-08-09 Issue:6453 Volume:365 Page:591-595
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Wang Yong¹^ORCID,Dar M. Ibrahim²^ORCID,Ono Luis K.³^ORCID,Zhang Taiyang¹^ORCID,Kan Miao¹^ORCID,Li Yawen⁴,Zhang Lijun⁴^ORCID,Wang Xingtao¹,Yang Yingguo⁵^ORCID,Gao Xingyu⁵,Qi Yabing³^ORCID,Grätzel Michael²^ORCID,Zhao Yixin¹⁶^ORCID

Affiliation:

1. School of Environmental Science and Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China.

2. Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Federale de Lausanne, CH-1015 Lausanne, Switzerland.

3. Energy Materials and Surface Sciences Unit (EMSSU), Okinawa Institute of Science and Technology Graduate University (OIST), Okinawa 904-0495, Japan.

4. State Key Laboratory of Superhard Materials, Key Laboratory of Automobile Materials of MOE, and School of Materials Science and Engineering, Jilin University, Changchun 130012, China.

5. Shanghai Synchrotron Radiation Facility (SSRF), Zhangjiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China.

6. Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.

Abstract

Tetragonal phases for perovskite solar cells The power conversion efficiencies (PCEs) of all-inorganic perovskites are lower than those of materials with organic cations. This is in part because these materials have larger bandgaps. The cubic crystal phases of these materials also exhibit poor stability. Wang et al. synthesized the tetragonal β-phase of CsPbI 3 from HPbI 3 and CsI. The material exhibited higher stability and a more favorable bandgap, which allowed for PCEs of 15%. Passivation of the surface trap state with choline iodide boosted PCEs to 18%. Science , this issue p. 591

Funder

National Natural Science Foundation of China

China Postdoctoral Science Foundation

the Energy Materials and Surface Sciences Unit of the Okinawa Institute of Science and Technology Graduate University

the OIST R and D Cluster Research Program

the OIST Proof of Concept (POC) Program

JSPS KAKENHI Grant

Huoyingdong Grant

Shanghai Shuguang Grant

Publisher

American Association for the Advancement of Science (AAAS)

Subject