Four-Terminal Tandem Solar Cells Using CH3NH3PbBr3 by Spectrum Splitting

Rui Sheng; Anita W Y Ho-Baillie; Shujuan Huang; Mark Keevers; Xiaojing Hao; Liangcong Jiang; Yi-Bing Cheng; Martin A Green

doi:10.1021/acs.jpclett.5b01608

Four-Terminal Tandem Solar Cells Using CH3NH3PbBr3 by Spectrum Splitting

J Phys Chem Lett. 2015 Oct 1;6(19):3931-4. doi: 10.1021/acs.jpclett.5b01608. Epub 2015 Sep 17.

Authors

Rui Sheng¹, Anita W Y Ho-Baillie¹, Shujuan Huang¹, Mark Keevers¹, Xiaojing Hao¹, Liangcong Jiang², Yi-Bing Cheng², Martin A Green¹

Affiliations

¹ Australian Centre for Advanced Photovoltaics (ACAP), School of Photovoltaic and Renewable Energy Engineering, University of New South Wales , Sydney New South Wales 2052, Australia.
² Department of Materials Engineering, Monash University , Melbourne, Victoria 3800, Australia.

PMID: 26722894
DOI: 10.1021/acs.jpclett.5b01608

Abstract

In this work, the use of a high bandgap perovskite solar cell in a spectrum splitting system is demonstrated. A remarkable energy conversion efficiency of 23.4% is achieved when a CH3NH3PbBr3 solar cell is coupled with a 22.7% efficient silicon passivated emitter rear locally diffused solar cell. Relative enhancements of >10% are demonstrated by CH3NH3PbBr3/CH3NH3PbI3 and CH3NH3PbBr3/multicrystalline-screen-printed-Si spectral splitting systems with tandem efficiencies of 13.4% and 18.8%, respectively. The former is the first demonstration of an all perovskite split spectrum system. The CH3NH3PbBr3 cell on a mesoporous structure was fabricated by the vapor-assisted method while the planar CH3NH3PbI3 cell was fabricated by the gas-assisted method. This work demonstrates the advantage of the higher voltage output from the high bandgap CH3NH3PbBr3 cell and its suitability in a tandem system.

Keywords: energy conversion efficiency; perovskite solar cell; split spectrum system.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.