High Performance Tandem Solar Cells with Inorganic Perovskite and Organic Conjugated Molecules to Realize Complementary Absorption

Kun Lang; Qiang Guo; Zhangwei He; Yiming Bai; Jianxi Yao; Muhammad Wakeel; Mohammed Sh Alhodaly; Tasawar Hayat; Zhan'ao Tan

doi:10.1021/acs.jpclett.0c02794

High Performance Tandem Solar Cells with Inorganic Perovskite and Organic Conjugated Molecules to Realize Complementary Absorption

J Phys Chem Lett. 2020 Nov 19;11(22):9596-9604. doi: 10.1021/acs.jpclett.0c02794. Epub 2020 Oct 29.

Authors

Kun Lang¹, Qiang Guo², Zhangwei He³, Yiming Bai¹, Jianxi Yao¹, Muhammad Wakeel⁴, Mohammed Sh Alhodaly⁵, Tasawar Hayat⁵, Zhan'ao Tan³

Affiliations

¹ State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China.
² Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450002, China.
³ Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
⁴ Department of Environmental Sciences, COMSATS University Islamabad (CUI), Vehari Campus, Islamabad 45550, Pakistan.
⁵ NAAM Research Group, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia.

PMID: 33119984
DOI: 10.1021/acs.jpclett.0c02794

Abstract

All-inorganic halide perovskite solar cells (PerSCs) have achieved rapid development in recent years. However, limited by narrow absorption bands, the power conversion efficiency (PCE) of all-inorganic halide PerSCs lag behind the organic-inorganic hybrid ones. In this contribution, to expand their absorption spectra and enhance the PCE, tandem solar cells (TSCs) with inorganic perovskite and organic conjugated molecules are constructed, utilizing CsPbI₂Br as an ultraviolet-visible light absorber and a PTB7-Th:IEICO-4F bulk-heterojunction (BHJ) active layer as a near-infrared light absorber. To physically and electronically connect the front and rear subcells, P3HT/MoO₃/Ag/PFN-Br is introduced as an interconnecting junction. Finally, the TSCs exhibit a remarkably higher PCE of 17.24% compared to that of the single junction PerSCs (12.09%) and organic solar cells (OSCs) (10.89%). These results indicate that the combination of all-inorganic perovskite and a low bandgap organic active layer for TSCs is a feasible approach to realize broad spectra utilization and efficiency enhancement.