標題: Efficient Tandem Organic Photovoltaics with Tunable Rear Sub-cells
作者: Cheng, Pei
Liu, Yuqiang
Chang, Sheng-Yung
Li, Tengfei
Sun, Pengyu
Wang, Rui
Cheng, Hao-Wen
Huang, Tianyi
Meng, Lei
Nuryyeva, Selbi
Zhu, Chenhui
Wei, Kung-Hwa
Sun, Baoquan
Zhan, Xiaowei
Yang, Yang
交大名義發表
National Chiao Tung University
公開日期: 20-二月-2019
摘要: A tandem structure was invented to enhance photon utilization efficiency and reduce thermal loss. Considering the unique advantages of non-fullerene acceptors (NFAs), the combination of NFAs and the tandem concept shows great potential for organic photovoltaics (OPVs). Herein, a simple strategy to balance the voltage-current trade-off in tandem OPVs by employing mixed NFAs in rear sub-cells is reported. The V-OC and J(SC) of rear sub-cells can be tuned by using the blend of donor/NFA/NFA. This strategy offers an easy approach to balance the V-OC and J(SC) in tandem OPVs toward higher power conversion efficiency (PCE) without rational and careful synthesis of new materials. Tandem OPVs based on mixed NFAs in rear sub-cells exhibited the best PCE of 13.3% in the lab. Importantly, the tandem devices were certified by the National Renewable Energy Laboratory (NREL) under asymptotic scans, and a PCE of 11.52% was achieved and recognized on the most recent NREL chart.
URI: http://dx.doi.org/10.1016/j.joule.2018.11.011
http://hdl.handle.net/11536/153571
ISSN: 2542-4351
DOI: 10.1016/j.joule.2018.11.011
期刊: JOULE
Volume: 3
Issue: 2
起始頁: 432
結束頁: 442
顯示於類別:期刊論文