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功能化两亲性二嵌段富勒烯衍生物作为高效倒置有机太阳能电池的阴极缓冲层

Functionalized Amphiphilic Diblock Fullerene Derivatives as a Cathode Buffer Layer for Efficient Inverted Organic Solar Cells.

作者信息

Liu Jikang, Wang Yao, Jiang Pengfei, Tu Guoli

机构信息

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, PR China.

出版信息

ACS Omega. 2020 Jan 13;5(3):1336-1345. doi: 10.1021/acsomega.9b01507. eCollection 2020 Jan 28.

DOI:10.1021/acsomega.9b01507
PMID:32010803
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6990446/
Abstract

The amphipathic interface layer sandwiched between cathode and active layers had always played a role to balance interface compatibility and interfacial energy barriers in inverted organic solar cell (OSC) devices. Two functionalized amphiphilic diblock fullerene derivatives named C-2DPE and C-4HTPB were synthesized and applied as an interface layer in modifying zinc oxide (ZnO). Based on their amphipathic characteristics, the solvent treatment was introduced to cause an obvious self-assembly of the two materials on ZnO. The introduced cathode buffer layer could improve the interface compatibility between ZnO and the organic active layer effectively with its amphipathic blocks. Based on the PTB7-Th:PCBM system, the OSC devices with a functionalized fullerene derivative layer could reach a power conversion efficiency of 9.21 and 8.86% for C-2DPE and C-4HTPB , respectively.

摘要

夹在阴极和活性层之间的两亲性界面层在倒置有机太阳能电池（OSC）器件中一直发挥着平衡界面兼容性和界面能垒的作用。合成了两种功能化两亲性二嵌段富勒烯衍生物C-2DPE和C-4HTPB，并将其作为界面层用于修饰氧化锌（ZnO）。基于它们的两亲性特征，引入溶剂处理以使这两种材料在ZnO上发生明显的自组装。引入的阴极缓冲层凭借其两亲性嵌段能够有效改善ZnO与有机活性层之间的界面兼容性。基于PTB7-Th:PCBM体系，具有功能化富勒烯衍生物层的OSC器件中，C-2DPE和C-4HTPB的功率转换效率分别可达9.21%和8.86%。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/553e/6990446/7b9619390cef/ao9b01507_0008.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/553e/6990446/dd8762f6d7ec/ao9b01507_0002.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/553e/6990446/07f19cd0c12d/ao9b01507_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/553e/6990446/7b9619390cef/ao9b01507_0008.jpg

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