石墨烯量子点在倒置体异质结有机光伏器件活性层中的双重作用

Dual Role of Graphene Quantum Dots in Active Layer of Inverted Bulk Heterojunction Organic Photovoltaic Devices.

作者信息

Wu Wentian, Wu Haixia, Zhong Min, Guo Shouwu

机构信息

School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.

Department of Electronic Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.

出版信息

ACS Omega. 2019 Sep 17;4(14):16159-16165. doi: 10.1021/acsomega.9b02348. eCollection 2019 Oct 1.

DOI:10.1021/acsomega.9b02348

PMID:31592136

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6777089/

Abstract

Graphene quantum dots (GQDs) have shown broad application prospects in the field of photovoltaic devices due to their unique quantum confinement and edge effects. Here, we prepared GQDs by a photon-Fenton reaction as reported in our previous work, which has great advantage in the preparation scale. The photoelectric properties of the inverted hybrid solar cells based on poly(3-hexylthiophene) (P3HT):(6,6)-phenyl-C butyric acid methylester (PCBM):GQDs and P3HT:GQDs with different contents of GQDs as the active layers are demonstrated, as well as their morphology and structure by atomic force microscopy images. Then, the different roles of GQDs played in the ternary (P3HT:PCBM:GQDs) and binary (P3HT:GQDs) hybrid solar cells are studied systematically. The results indicate that the GQDs provide an efficient excition separation interface and charge transport channel for the improvement of hybrid solar cells. The preliminary exploration and elaboration of the role of GQDs in hybrid solar cells will be beneficial to understand the interfacial procedure and improve device performance in the future.

摘要

石墨烯量子点（GQDs）因其独特的量子限域效应和边缘效应，在光电器件领域展现出广阔的应用前景。在此，我们按照之前工作报道的方法，通过光子 - 芬顿反应制备了GQDs，该方法在制备规模上具有很大优势。展示了以不同GQDs含量的聚（3 - 己基噻吩）（P3HT）：（6,6） - 苯基 - C丁酸甲酯（PCBM）：GQDs和P3HT：GQDs作为活性层的倒置混合太阳能电池的光电性能，以及通过原子力显微镜图像观察到的它们的形貌和结构。然后，系统研究了GQDs在三元（P3HT：PCBM：GQDs）和二元（P3HT：GQDs）混合太阳能电池中所起的不同作用。结果表明，GQDs为混合太阳能电池的性能提升提供了高效的激子分离界面和电荷传输通道。对GQDs在混合太阳能电池中作用的初步探索和阐述，将有助于未来理解界面过程并改善器件性能。