High‐Performance Integrated Perovskite and Organic Solar Cells with Enhanced Fill Factors and Near‐Infrared Harvesting

• DOI: 10.1002/adma.201504555
• Publication Date: 2016-02-26T08:28:11Z
• Authors: Junghwan Kim; Geunjin Kim; Hyungcheol Back; Jaemin Kong; In‐Wook Hwang; Tae Kyun Kim; Sooncheol Kwon; Jong‐Hoon Lee; Jinho Lee; Kilho Yu; Chang‐Lyoul Lee; Hongkyu Kang; Kwanghee Lee
• Keywords: 01 natural sciences; 7. Clean energy; 0104 chemical sciences

Highly efficient P-I-N type perovskite/bulk-heterojunction (BHJ) integrated solar cells (ISCs) with enhanced fill factor (FF) (≈80%) and high near-infrared harvesting (>30%) are demonstrated by optimizing the BHJ morphology with a novel n-type polymer, N2200, and a new solvent-processing additive. This work proves the feasibility of highly efficient ISCs with panchromatic absorption as a new photovoltaic architecture and provides important design rules for optimizing ISCs.