Mitigating the Trade-Off between Non-Radiative Recombination and Charge Transport to Enable Efficient Ternary Organic Solar Cells

被引:1
|
作者
Zhang, Yexin [1 ]
Yuan, Shuai [2 ,3 ]
Zhang, Congyang [3 ]
Ding, Chenfeng [3 ]
Zhang, Congcong [4 ]
Xu, Hai [1 ]
机构
[1] Cent South Univ, Coll Chem & Chem Engn, South Lushan Rd, Changsha 410083, Peoples R China
[2] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Peoples R China
[3] Grad Univ OIST, Okinawa Inst Sci & Technol, Energy Mat & Surface Sci Unit EMSSU, Onna, Okinawa 9040495, Japan
[4] Univ Tokyo, Grad Sch Arts & Sci, Dept Gen Syst Studies, 3-8-1 Komaba,Meguro Ku, Tokyo 1538902, Japan
基金
中国国家自然科学基金;
关键词
ternary organic solar cells; charge-transfer state; open circle voltage loss; nonfullerene acceptors; ACCEPTOR;
D O I
10.3390/ma16165620
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Ternary organic solar cells (OSCs) have attracted intensive studies due to their promising potential for attaining high-performing photovoltaics, whereas there has been an opening challenge in minimizing the open circuit voltage (Voc) loss while retaining the optimal carrier extraction in the multiple mixture absorbers. Here, we systemically investigate a ternary absorber comprised of two acceptors and a donor, in which the resultant Voc and fill factor are varied and determined by the ratios of acceptor components as a result of the unbalance of non-radiative recombination rates and charge transport. The transient absorption spectroscopy and electroluminescence techniques verify two distinguishable charge-transfer (CT) states in the ternary absorber, and the mismatch of non-radiative recombination rates of those two CT states is demonstrated to be associated with the Voc deficit, whilst the high-emissive acceptor molecule delivers inferior electron mobility, resulting in poor charge transport and a subpar fill factor. These findings enable us to optimize the mixture configuration for attaining the maximal-performing devices. Our results not only provide insight into maximizing the photovoltage of organic solar cells but can also motivate researchers to further unravel the photophysical mechanisms underlying the intermolecular electronic states of organic semiconductors.
引用
收藏
页数:8
相关论文
共 50 条
  • [1] Reducing non-radiative recombination energy loss via a fluorescence intensifier for efficient and stable ternary organic solar cells
    Liu, Xuan
    Liu, Yang
    Ni, Yongfeng
    Fu, Ping
    Wang, Xuchao
    Yang, Qing
    Guo, Xin
    Li, Can
    MATERIALS HORIZONS, 2021, 8 (08) : 2335 - 2342
  • [2] Overcoming the trade-off between exciton dissociation and charge recombination in organic photovoltaic cells
    Zhang, Tao
    Holmes, Russell J.
    APPLIED PHYSICS LETTERS, 2018, 113 (14)
  • [3] Suppressing non-radiative recombination for efficient and stable perovskite solar cells
    Tao, Jiahua
    Zhao, Chunhu
    Wang, Zhaojin
    Chen, You
    Zang, Lele
    Yang, Guang
    Bai, Yang
    Chu, Junhao
    ENERGY & ENVIRONMENTAL SCIENCE, 2025, 18 (02) : 509 - 544
  • [4] 19.35%-Efficiency organic solar cells and reduced non-radiative recombination energy loss by a ternary copolymerization strategy
    He, Dan
    Xie, Linwei
    Bai, Yahui
    Shen, Xingxing
    Wu, Xiangxi
    Zhang, Jianqi
    Li, Xiaojun
    Li, Yongfang
    Zhao, Fuwen
    JOURNAL OF MATERIALS CHEMISTRY C, 2025,
  • [5] Highly efficient organic solar cells enabled by suppressing triplet exciton formation and non-radiative recombination
    Li, Congqi
    Yao, Guo
    Gu, Xiaobin
    Lv, Jikai
    Hou, Yuqi
    Lin, Qijie
    Yu, Na
    Abbasi, Misbah Sehar
    Zhang, Xin
    Zhang, Jianqi
    Tang, Zheng
    Peng, Qian
    Zhang, Chunfeng
    Cai, Yunhao
    Huang, Hui
    NATURE COMMUNICATIONS, 2024, 15 (01)
  • [6] Non-Radiative Recombination Energy Losses in Non-Fullerene Organic Solar Cells
    He, Dan
    Zhao, Fuwen
    Wang, Chunru
    Lin, Yuze
    ADVANCED FUNCTIONAL MATERIALS, 2022, 32 (19)
  • [7] Understanding and Suppressing Non-Radiative Recombination Losses in Non-Fullerene Organic Solar Cells
    Liu, Quan
    Vandewal, Koen
    ADVANCED MATERIALS, 2023, 35 (35)
  • [8] Minimizing non-radiative recombination losses in perovskite solar cells
    Deying Luo
    Rui Su
    Wei Zhang
    Qihuang Gong
    Rui Zhu
    Nature Reviews Materials, 2020, 5 : 44 - 60
  • [9] Minimizing non-radiative recombination losses in perovskite solar cells
    Luo, Deying
    Su, Rui
    Zhang, Wei
    Gong, Qihuang
    Zhu, Rui
    NATURE REVIEWS MATERIALS, 2020, 5 (01) : 44 - 60
  • [10] Suppressing non-radiative recombination and tuning morphology via central core asymmetric substitution for efficient organic solar cells
    Si, Xiaodong
    Shi, Wendi
    Wang, Ruohan
    Zhao, Wenkai
    Suo, Zhaochen
    Fu, Zhen
    Long, Guankui
    Hao, Xiaotao
    Yao, Zhaoyang
    Wan, Xiangjian
    Li, Chenxi
    Chen, Yongsheng
    NANO ENERGY, 2024, 131