A High-Efficiency Si Nanowire Array/Perovskite Hybrid Solar Cell

Xin Yan; Chen Zhang; Jiamin Wang; Xia Zhang; Xiaomin Ren

doi:10.1186/s11671-016-1785-y

A High-Efficiency Si Nanowire Array/Perovskite Hybrid Solar Cell

Nanoscale Res Lett. 2017 Dec;12(1):14. doi: 10.1186/s11671-016-1785-y. Epub 2017 Jan 5.

Authors

Xin Yan¹, Chen Zhang¹, Jiamin Wang¹, Xia Zhang², Xiaomin Ren¹

Affiliations

¹ State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China.
² State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China. xzhang@bupt.edu.cn.

Abstract

A low-cost Si nanowire array/perovskite hybrid solar cell is proposed and simulated. The solar cell consists of a Si p-i-n nanowire array filled with CH₃NH₃PbI₃, in which both the nanowires and perovskite absorb the incident light while the nanowires act as the channels for transporting photo-generated electrons and holes. The hybrid structure has a high absorption efficiency in a broad wavelength range of 300~800 nm. A large short-circuit current density of 28.8 mA/cm² and remarkable conversion efficiency of 13.3% are obtained at a thin absorber thickness of 1.6 μm, which are comparable to the best results of III-V nanowire solar cells.

Keywords: Nanowire; Perovskite; Si; Solar cell.