Guest Acceptors with Lower Electrostatic Potential in Ternary Organic Solar Cells for Minimizing Voltage Losses

Shuncheng Yang; Zhenyu Chen; Jintao Zhu; Daobin Yang; Hongqian Wang; Pengfei Ding; Jie Wu; Pengyu Yan; Lin Xie; Fei Chen; Yuming Wang; Jianqi Zhang; Ziyi Ge

doi:10.1002/adma.202401789

Guest Acceptors with Lower Electrostatic Potential in Ternary Organic Solar Cells for Minimizing Voltage Losses

Adv Mater. 2024 Apr 5:e2401789. doi: 10.1002/adma.202401789. Online ahead of print.

Authors

Shuncheng Yang^{1

2}, Zhenyu Chen^{2

3}, Jintao Zhu⁴, Daobin Yang^{2

3}, Hongqian Wang^{2

3}, Pengfei Ding^{2

3}, Jie Wu², Pengyu Yan², Lin Xie^{2

3}, Fei Chen⁴, Yuming Wang⁵, Jianqi Zhang⁶, Ziyi Ge^{2

3}

Affiliations

¹ School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, China.
² Zhejiang Engineering Research Center for Energy Optoelectronic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China.
³ Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China.
⁴ Department of Chemical and Environmental Engineering, University of Nottingham Ningbo China, Ningbo, 315100, China.
⁵ Institute for Materials Research (IMO-IMOMEC), Hasselt University, Wetenschapspark 1, Diepenbeek, 3590, Belgium.
⁶ CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China.

PMID: 38577904
DOI: 10.1002/adma.202401789

Abstract

The ternary strategy, in which one guest component is introduced into one host binary system, is considered to be one of the most effective ways to realize high-efficiency organic solar cells (OSCs). To date, there is no efficient method to predict the effectiveness of guest components in ternary OSCs. Herein, three guest compositions (i.e., ANF-1, ANF-2 and ANF-3) with different electrostatic potential (ESP) are designed and synthesized by modulating the electron-withdrawing ability of the terminal groups through density functional theory simulations. The effects of the introduction of guest component into the host system (D18:N3) on the photovoltaic properties are investigated. The theoretical and experimental studies provide a key rule for guest acceptor in ternary OSCs to improve the open-circuit voltage, that is, the larger ESP difference between the guest and host acceptor, the stronger the intermolecular interactions and the higher the miscibility, which improves the luminescent efficiency of the blend film and the electroluminescence quantum yield (EQE_EL) of the device by reducing the aggregation-caused-quenching, thereby effectively decreasing the non-radiative voltage loss of ternary OSCs. This work will greatly contribute to the development of highly efficient guest components, thereby promoting the rapid breakthrough of the 20% efficiency bottleneck for single-junction OSCs.

Keywords: electrostatic potential; high miscibility; intermolecular interactions; non‐radiative voltage losses; ternary organic solar cells.

Abstract

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