Surface Regulation with Polymerized Small Molecular Acceptor Towards Efficient Inverted Perovskite Solar Cells

Li, Dongyang1,2; Huang, Yulan1; Ma, Ruijie2; Liu, Heng3; Liang, Qiong2; Han, Yu2; Ren, Zhiwei2; Liu, Kuan2; Fong, Patrick Wai-Keung2; Zhang, Zhuoqiong1; Lian, Qing1; Lu, Xinhui3; Cheng, Chun1,4; Li, Gang2,5,6

2023-03-01

10.1002/aenm.202204247

ADVANCED ENERGY MATERIALS   Impact Factor & Quartile

1614-6832

1614-6840

Optimizing the interface between the perovskite and transport layers is an efficient approach to promote the photovoltaic performance of inverted perovskite solar cells (IPSCs). Given decades of advances in bulk materials optimization, the performance of IPSCs has been pushed to its limits by interface engineering with a power conversion efficiency (PCE) over 25% and excellent stability. Herein, an n-type polymeric semiconducting material, PY-IT, that has shown remarkable performance in organic photovoltaics, is introduced as an interface regulator between perovskite and ETL. Encouragingly, this polymerized small molecular acceptor (PSMA) exhibits significant effectiveness in both passivation defects and electron transfer facilitation properties with the merits of strong planarity and rotatable linkers, which significantly optimizes perovskite grain growth orientation and added charge transport channels. As a result, the PSMA-treated IPSC devices obtain an optimal efficiency of 23.57% with a fill factor of 84%, among the highest efficiency among PSMA-based IPSCs. Meanwhile, the photo-stability of PSMA devices is eye-catching, maintaining approximate to 80% of its initial PCE after 1000 h of simulated 1-sun illumination under maximal power point tracking. This work combines the achievements of polymer science and IPSC device engineering to provide a new insight into interface regulation of efficient and stable devices.

Inverted perovskite solar cells polymerized small molecules surface reconstruction

SCI

English

First ; Corresponding

Research Grants Council of Hong Kong["C7018-20G","15307922","15221320","C5037-18G"] ; RGC Senior Research Fellowship Scheme[SRFS2223-5S01] ; National Natural Science Foundation of China["91963129","2021S07"] ; Shenzhen Science and Technology Innovation Commission[JCYJ20200109105003940] ; Hong Kong Polytechnic University Internal Research Funds: Sir Sze-yuen Chung Endowed Professorship Fund["8-8480","Q-CDA5","pdjh2022c0003"] ; Guangdong Provincial Key Laboratory of Energy Materials for Electric Power[1-YW4C] ; Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices (GDSTC)[pdjh2022c0005] ; null[51961165102] ; null[2019B121205001] ; null[2018B030322001]

Chemistry ; Energy & Fuels ; Materials Science ; Physics

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000955148800001

WILEY-V C H VERLAG GMBH

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong Provi, Peoples R China
2.Hong Kong Polytech Univ, Res Inst Smart Energy RISE, Dept Elect Informat Engn, Hung Hom,Kowloon, Hong Kong 999077, Peoples R China
3.Chinese Univ Hong Kong, Dept Phys, Hong Kong 999077, Peoples R China
4.Southern Univ Sci & Technol, Guangdong Prov Key Lab Energy Mat Elect Power, Shenzhen 518055, Peoples R China
5.Hong Kong Polytech Univ, Shenzhen Res Inst, Shenzhen 518057, Guangdong, Peoples R China
6.Hong Kong Polytech Univ, Guangdong Hong Kong Macao GHM Joint Lab Photon The, Hung Hom, Kowloon, Hong Kong 999077, Peoples R China

Li, Dongyang,Huang, Yulan,Ma, Ruijie,et al. Surface Regulation with Polymerized Small Molecular Acceptor Towards Efficient Inverted Perovskite Solar Cells[J]. ADVANCED ENERGY MATERIALS,2023.

Li, Dongyang.,Huang, Yulan.,Ma, Ruijie.,Liu, Heng.,Liang, Qiong.,...&Li, Gang.(2023).Surface Regulation with Polymerized Small Molecular Acceptor Towards Efficient Inverted Perovskite Solar Cells.ADVANCED ENERGY MATERIALS.

Li, Dongyang,et al."Surface Regulation with Polymerized Small Molecular Acceptor Towards Efficient Inverted Perovskite Solar Cells".ADVANCED ENERGY MATERIALS (2023).