A perovskite/silicon hybrid system with a solar-to-electric power conversion efficiency of 25.5%

Likai Zheng, Jilei Wang, Yimin Xuan, Mengying Yan, Xinxin Yu, Yong Peng, Yi Bing Cheng

Research output: Contribution to journalArticleResearchpeer-review

10 Citations (Scopus)

Abstract

Perovskite/silicon tandem technology has emerged as a promising strategy for low-cost and efficient solar energy utilization. However, the performance reduction of silicon bottom cells under low intensity illumination still prevents the tandem systems from yielding ultimate electric power. In this paper, we employed a V-shaped tandem configuration as well as a low parasitic absorption tungsten doped indium oxide (IWO) transparent electric anode, which exhibits only ∼0.6% parasitic absorption for near infrared wavelengths, to achieve a 100% enhancement of incident light intensity for the silicon sub-cell and boost the open-circuit voltage (VOC) of the silicon sub-cell to a value of 0.719 V. As a result, by using a 21.13% efficiency silicon solar cell, the tandem system achieves a cumulative efficiency of 25.57% (9.43% from the silicon cell). In addition, the V-shaped tandem system can maintain over 73% output power as the incident angle varies within ±25°.

Original languageEnglish
Pages (from-to)26479-26489
Number of pages11
JournalJournal of Materials Chemistry A
Volume7
Issue number46
DOIs
Publication statusPublished - 14 Dec 2019
Externally publishedYes

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