题目：

Electroluminescent Solar Cells Based on CsPbI₃ Perovskite Quantum Dots

作者：

Yao Wang,¹ Chenghao Duan,² Xuliang Zhang,¹ Jianguo Sun,¹ Xufeng Ling,¹ Junwei Shi,¹ Long Hu,³ Zizhen Zhou,⁴ Xianxin Wu,⁵ Wei Han,⁶ Xinfeng Liu,⁵ Claudio Cazorla,⁷ Dewei Chu,⁴ Shujuan Huang,³ Tom Wu,⁴ Jianyu Yuan,^1,* and Wanli Ma^1,*

单位：

¹ Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren'ai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, P. R. China

² School of Environment and Energy, South China University of Technology, Guangzhou 510640, P. R. China

³ School of Engineering, Macquarie University Sydney, New South Wales 2109, Australia

⁴ School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales 2052, Australia

⁵ CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing 100190, P. R. China

⁶ Department of Chemistry, Baotou Teachers’ College Baotou 014030, P. R. China

⁷ Departament de Física, Universitat Politècnica de Catalunya Campus, Nord B4-B5, Barcelona E-08034, Spain

摘要：

All-inorganic CsPbX₃ (X = Cl, Br, I, or mixed halides) perovskite quantum dots (QDs) exhibit tunable optical bandgaps and narrow emission peaks, which have received worldwide interest in the field of both photovoltaics (PVs) and light-emitting diodes (LEDs). Herein, it is reported a discovery that CsPbI₃ perovskite QD solar cell can simultaneously deliver high PV performance and intense electroluminescence. In specific, the multifunctional CsPbI₃ QD film is fabricated through a simple yet efficient solid-state-ligand exchange process using a tailored organic ligand triphenyl phosphite (TPPI). The function of QD surface manipulation using TPPI here is proven to be twofold, balancing the carrier transport and effectively passivating the QD surface to produce conductive and emissive QD film. The CsPbI₃ perovskite QD solar cell delivers a champion efficiency of 15.21% with improved open circuit voltage and high fill factor. Concurrently functioning as a red LED, the CsPbI₃ perovskite QD solar cell outputs electric power to light conversion efficiency approaching 4%, a record value for QD electroluminescent PVs. The results here indicate that these versatile perovskite QDs may be a promising candidate for fabricating multifunctional optoelectronic devices.

影响因子：

16.836

分区情况：

一区

链接：

https://onlinelibrary.wiley.com/doi/10.1002/adfm.202108615