Organic and solution-processed tandem solar cells with 17.3% efficiency

Meng, LX (Meng, Lingxian)^[ 1,2,3 ] ; Zhang, YM (Zhang, Yamin)^[ 1,2,3 ] ; Wan, XJ (Wan, Xiangjian)^[ 1,2,3 ] ; Li, CX (Li, Chenxi)^[ 1,2,3 ] ; Zhang, X (Zhang, Xin)^[ 1,2,3 ] ; Wang, YB (Wang, Yanbo)^[ 1,2,3 ] ; Ke, X (Ke, Xin)^[ 1,2,3 ] ; Xiao, Z (Xiao, Zuo)^[ 4 ] ; Ding, LM (Ding, Liming)^[ 4 ] ; Xia, RX (Xia, Ruoxi)^[ 5 ] ; Yip, HL (Yip, Hin-Lap)^[ 5 ] ; Cao, Y (Cao, Yong)^[ 5 ] ; Chen, YS (Chen, Yongsheng)^[ 1,2,3 ]

SCIENCE, 2018, 361(6407): 1094-+

DOI: 10.1126/science.aat2612

 WOS:000444513300035

Abstract

Although organic photovoltaic (OPV) cells have many advantages, their performance still lags far behind that of other photovoltaic platforms. A fundamental reason for their low performance is the low charge mobility of organic materials, leading to a limit on the active-layer thickness and efficient light absorption. In this work, guided by a semi-empirical model analysis and using the tandem cell strategy to overcome such issues, and taking advantage of the high diversity and easily tunable band structure of organic materials, a record and certified 17.29% power conversion efficiency for a two-terminal monolithic solution-processed tandem OPV is achieved.