Synergistic Optimization of Buried Interface by Multifunctional Organic-Inorganic Complexes for Highly Efficient Planar Perovskite Solar Cells

Liu, Heng1,2; Lu, Zhengyu3; Zhang, Weihai2; Zhou, Hongkang2; Xia, Yu2; Shi, Yueqing4; Wang, Junwei2; Chen, Rui4; Xia, Haiping3; Wang, Hsing-Lin2,5

2023-12-01

10.1007/s40820-023-01130-5

NANO-MICRO LETTERS   影响因子和分区

2311-6706

2150-5551

For the further improvement of the power conversion efficiency (PCE) and stability of perovskite solar cells (PSCs), the buried interface between the perovskite and the electron transport layer is crucial. However, it is challenging to effectively optimize this interface as it is buried beneath the perovskite film. Herein, we have designed and synthesized a series of multifunctional organic-inorganic (OI) complexes as buried interfacial material to promote electron extraction, as well as the crystal growth of the perovskite. The OI complex with BF4- group not only eliminates oxygen vacancies on the SnO2 surface but also balances energy level alignment between SnO2 and perovskite, providing a favorable environment for charge carrier extraction. Moreover, OI complex with amine (- NH2) functional group can regulate the crystallization of the perovskite film via interaction with PbI2, resulting in highly crystallized perovskite film with large grains and low defect density. Consequently, with rational molecular design, the PSCs with optimal OI complex buried interface layer which contains both BF4- and -NH2 functional groups yield a champion device efficiency of 23.69%. More importantly, the resulting unencapsulated device performs excellent ambient stability, maintaining over 90% of its initial efficiency after 2000 h storage, and excellent light stability of 91.5% remaining PCE in the maximum power point tracking measurement (under continuous 100 mW cm(-2) light illumination in N-2 atmosphere) after 500 h.

Perovskite solar cells Organic Inorganic complexes Multifunctional interfacial material Buried interface layer

SCI ; EI

英语

通讯

Natural Science Foundation of China["21931002","22101123"] ; National Key Research and Development Program of China[2018YFB0704100] ; Shenzhen Science and Technology Innovation Committee[JCYJ20200109140812302] ; Leading talents of Guangdong province program[2016LJ06N507] ; Guangdong Provincial Key Laboratory of Energy Materials for Electric Power[2018B030322001] ; Guangdong Provincial Key Laboratory of Catalysis[2020B121201002]

Science & Technology - Other Topics ; Materials Science ; Physics

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:001015061500003

SHANGHAI JIAO TONG UNIV PRESS

20232514274598

Conversion efficiency ; Electron transport properties ; Extraction ; Iodine compounds ; Layered semiconductors ; Lead compounds ; Maximum power point trackers ; Perovskite ; Synthesis (chemical)

Minerals:482.2 ; Energy Conversion Issues:525.5 ; Solar Cells:702.3 ; Electric Equipment:704.2 ; Semiconducting Materials:712.1 ; Chemical Reactions:802.2 ; Chemical Operations:802.3

2-s2.0-85162257722

Web of Science

1.Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
3.Southern Univ Sci & Technol, Shenzhen Grubbs Inst, Dept Chem, Shenzhen 518055, Guangdong, Peoples R China
4.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Guangdong, Peoples R China
5.Southern Univ Sci & Technol, Key Univ Lab Highly Efficient Utilizat Solar Energ, Shenzhen 518055, Guangdong, Peoples R China

Liu, Heng,Lu, Zhengyu,Zhang, Weihai,et al. Synergistic Optimization of Buried Interface by Multifunctional Organic-Inorganic Complexes for Highly Efficient Planar Perovskite Solar Cells[J]. NANO-MICRO LETTERS,2023,15(1).

Liu, Heng.,Lu, Zhengyu.,Zhang, Weihai.,Zhou, Hongkang.,Xia, Yu.,...&Wang, Hsing-Lin.(2023).Synergistic Optimization of Buried Interface by Multifunctional Organic-Inorganic Complexes for Highly Efficient Planar Perovskite Solar Cells.NANO-MICRO LETTERS,15(1).

Liu, Heng,et al."Synergistic Optimization of Buried Interface by Multifunctional Organic-Inorganic Complexes for Highly Efficient Planar Perovskite Solar Cells".NANO-MICRO LETTERS 15.1(2023).