Three-Dimensional Nanopillar Arrays-Based Efficient and Flexible Perovskite Solar Cells with Enhanced Stability

Zhu，Yiyi1,2; Shu，Lei1,2; Poddar，Swapnadeep1,2; Zhang，Qianpeng1,2; Chen，Zhesi1,2; Ding，Yucheng1,2; Long，Zhenghao1,2; Ma，Suman1,3; Ren，Beitao1,2; Qiu，Xiao1,2; Fan，Zhiyong1,2,4

2022

10.1021/acs.nanolett.2c03694

NANO LETTERS   Impact Factor & Quartile

1530-6984

1530-6992

Perovskite nanopillars (PNPs) are propitious candidates for solar irradiation harvesting and are potential alternatives to thin films in flexible photovoltaics. To realize efficient daily energy output, photovoltaics must absorb sunlight over a broad range of incident angles and wavelengths congruent with the solar spectrum. Herein, we report highly periodic three-dimensional (3D) PNP-based flexible photovoltaics possessing a core-shell structure. The vertically aligned PNP arrays demonstrate up to 95.70% and 75.10% absorption at peak and under an incident angle of 60°. The efficient absorption and the orthogonal carrier collection facilitate an external quantum efficiency of 84.0%-89.18% for broadband wavelength. PNPs have been successfully implemented in flexible solar cells. The porous alumina membrane protects PNPs against water and oxygen intrusion and thereby imparts robustness to photovoltaic devices. Meanwhile, the excellent tolerance to mechanical stress/strain enables our unique PNP-based device to provide efficient solar-to-electricity conversion while undergoing mechanical bending.

Flexible Devices Nanowires Perovskite Solar Cell

SCI

English

NI Journal Papers

Others

WOS:000889906700001

MATERIALS SCIENCE

2-s2.0-85142658190

Scopus

1.Department of Electronic and Computer Engineering,The Hong Kong University of Science and Technology,Kowloon,999077,Hong Kong
2.Shenzhen Research Institute,The Hong Kong University of Science and Technology,Shenzhen,No. 9 Yuexing first RD, South Area, Hi-tech Park, Nanshan,518057,Hong Kong
3.Department of Materials Science and Engineering,Shenzhen,Southern University of Science and Technology,Shenzhen,518055,China
4.Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology,The Hong Kong University of Science and Technology,Kowloon,999077,Hong Kong

Zhu，Yiyi,Shu，Lei,Poddar，Swapnadeep,et al. Three-Dimensional Nanopillar Arrays-Based Efficient and Flexible Perovskite Solar Cells with Enhanced Stability[J]. NANO LETTERS,2022.

Zhu，Yiyi.,Shu，Lei.,Poddar，Swapnadeep.,Zhang，Qianpeng.,Chen，Zhesi.,...&Fan，Zhiyong.(2022).Three-Dimensional Nanopillar Arrays-Based Efficient and Flexible Perovskite Solar Cells with Enhanced Stability.NANO LETTERS.

Zhu，Yiyi,et al."Three-Dimensional Nanopillar Arrays-Based Efficient and Flexible Perovskite Solar Cells with Enhanced Stability".NANO LETTERS (2022).