Highly efficient p-i-n perovskite solar cells that endure temperature variations

Author:

Li Guixiang1ORCID,Su Zhenhuang2ORCID,Canil Laura1ORCID,Hughes Declan3ORCID,Aldamasy Mahmoud H.1ORCID,Dagar Janardan1ORCID,Trofimov Sergei1ORCID,Wang Luyao1ORCID,Zuo Weiwei4ORCID,Jerónimo-Rendon José J.4ORCID,Byranvand Mahdi Malekshahi45ORCID,Wang Chenyue2,Zhu Rui6,Zhang Zuhong6,Yang Feng6ORCID,Nasti Giuseppe7ORCID,Naydenov Boris1ORCID,Tsoi Wing C.3ORCID,Li Zhe8,Gao Xingyu2ORCID,Wang Zhaokui9ORCID,Jia Yu6,Unger Eva1ORCID,Saliba Michael45ORCID,Li Meng168ORCID,Abate Antonio17ORCID

Affiliation:

1. Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany.

2. Shanghai Synchrotron Radiation Facility (SSRF), Shanghai Advanced Research Institute, Chinese Academy of Sciences, 239 Zhangheng Road, Shanghai 201204, China.

3. SPECIFIC, Department of Materials Science and Engineering, Faculty of Science and Engineering, Swansea University, Bay Campus, Fabian Way, Swansea SA1 8EN, UK.

4. Institute for Photovoltaics (ipv), University of Stuttgart, Pfaffenwaldring 47, D-70569 Stuttgart, Germany.

5. Helmholtz Young Investigator Group FRONTRUNNER, IEK5-Photovoltaics, Forschungszentrum Jülich, 52425 Jülich, Germany.

6. Key Lab for Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials Science and Engineering, Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China.

7. Department of Chemical, Materials and Production Engineering, University of Naples Federico II. Naples, pzz.le Vincenzo Tecchio 80, 80125 Naples, Italy.

8. School of Engineering and Materials Science (SEMS), Queen Mary University of London, London E1 4NS, UK.

9. Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China.

Abstract

Daily temperature variations induce phase transitions and lattice strains in halide perovskites, challenging their stability in solar cells. We stabilized the perovskite black phase and improved solar cell performance using the ordered dipolar structure of β-poly(1,1-difluoroethylene) to control perovskite film crystallization and energy alignment. We demonstrated p-i-n perovskite solar cells with a record power conversion efficiency of 24.6% over 18 square millimeters and 23.1% over 1 square centimeter, which retained 96 and 88% of the efficiency after 1000 hours of 1-sun maximum power point tracking at 25° and 75°C, respectively. Devices under rapid thermal cycling between −60° and +80°C showed no sign of fatigue, demonstrating the impact of the ordered dipolar structure on the operational stability of perovskite solar cells.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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