Amino-Functionalized Graphdiyne Derivative as a Cathode Interface Layer with High Thickness Tolerance for Highly Efficient Organic Solar Cells

Yuanyuan Kan; Yanna Sun; Yi Ren; Yixuan Xu; Xinyue Jiang; Haojiang Shen; Longlong Geng; Jianfeng Li; Ping Cai; Huajun Xu; Ke Gao; Yuliang Li

doi:10.1002/adma.202312635

Amino-Functionalized Graphdiyne Derivative as a Cathode Interface Layer with High Thickness Tolerance for Highly Efficient Organic Solar Cells

Adv Mater. 2024 Apr;36(16):e2312635. doi: 10.1002/adma.202312635. Epub 2024 Jan 17.

Authors

Yuanyuan Kan¹, Yanna Sun¹, Yi Ren^{1

2}, Yixuan Xu^{1

3}, Xinyue Jiang¹, Haojiang Shen^{1

2}, Longlong Geng⁴, Jianfeng Li², Ping Cai³, Huajun Xu¹, Ke Gao¹, Yuliang Li^{1

5

6}

Affiliations

¹ Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion, Science Center for Material Creation and Energy Conversion, School of Chemistry and Chemical Engineering, Shandong University, Qingdao, 266237, P. R. China.
² School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, P. R. China.
³ School of Materials Science and Engineering & Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin, 541004, P. R. China.
⁴ Shandong Provincial Key Laboratory of Monocrystalline Silicon Semiconductor Materials and Technology, College of Chemistry and Chemical Engineering, Dezhou University, Dezhou, 253023, P. R. China.
⁵ Institute of Chemistry, the Chinese Academy of Sciences, Beijing, 100190, P. R. China.
⁶ University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.

PMID: 38229541
DOI: 10.1002/adma.202312635

Abstract

Efficient cathode interfacial materials (CIMs) are essential components for effectively enhancing the performance of organic solar cells (OSCs). Although high-performance CIMs are desired to meet the requirements of various OSCs, potential candidates for CIMs are scarce. Herein, an amino-functionalized graphdiyne derivative (GDY-N) is developed, which represents the first example of GDY that exhibits favorable solubility in alcohol. Utilizing GDY-N as the CIM, an outstanding champion PCE of 19.30% for devices based on the D18-Cl:L8-BO (certified result: 19.05%) is achieved, which is among the highest efficiencies reported to date in OSCs. Remarkably, the devices based on GDY-N exhibit a thickness-insensitive characteristic, maintaining 95% of their initial efficiency even with a film thickness of 25 nm. Moreover, the GDY-N displays wide universality and facilitates exceptional stability in OSCs. This work not only enriches the diversity of GDY derivatives, but also demonstrates the feasibility of GDY derivatives as CIMs with high thickness tolerance in OSCs.

Keywords: cathode interface material; graphdiyne; organic solar cell.

Abstract

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