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A thermal stable cathode buffer based on an inexpensive tetranuclear zinc(II) complex for organic photovoltaic devices

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Abstract

An inexpensive material, i.e., tetranuclear zinc(II) complex, (Zn4O(AID)6) [AID = 7-azaindolate], was utilized as a cathode buffer in organic photovoltaic (OPV) devices, leading to the improvement of device performance. Compared to OPV devices based on a conventional cathode buffer of TPBi (1,3,5-tris(2-N-phenylbenzimidazolyl)benzene), although the freshly prepared devices showed similar performance, when heated to a series of high temperatures under air, the short circuit current and the open circuit voltage of the Zn4O(AID)6 devices dropped more slowly, indicating the superiority of using Zn4O(AID)6 as a cathode buffer over TPBi in OPV devices.

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Authors and Affiliations

  1. Jiangsu Engineering Centre for Flat-Panel Displays & Solid-state Lighting and School of Materials Science & Engineering, Nanjing University of Posts & Telecommunications, Nanjing, 210046, China

    ZhiGang Li, ZhiQiang Gao, HaiShan Wang, Hui Zhang, XinYan Zhao & BaoXiu Mi

  2. Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing, 210046, China

    ZhiGang Li, HaiShan Wang, Hui Zhang, XinYan Zhao, BaoXiu Mi & Wei Huang

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  1. ZhiGang Li
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  2. ZhiQiang Gao
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  3. HaiShan Wang
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  4. Hui Zhang
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  5. XinYan Zhao
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  6. BaoXiu Mi
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  7. Wei Huang
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Correspondence to ZhiQiang Gao or Wei Huang.

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Li, Z., Gao, Z., Wang, H. et al. A thermal stable cathode buffer based on an inexpensive tetranuclear zinc(II) complex for organic photovoltaic devices. Sci. China Chem. 55, 2562–2566 (2012). https://doi.org/10.1007/s11426-012-4704-9

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  • DOI: https://doi.org/10.1007/s11426-012-4704-9

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