溶液处理的氧化石墨烯作为聚合物太阳能电池中的高效空穴传输层。

Solution-processable graphene oxide as an efficient hole transport layer in polymer solar cells.

机构信息

Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan.

出版信息

ACS Nano. 2010 Jun 22;4(6):3169-74. doi: 10.1021/nn100551j.

PMID:20481512

Abstract

The utilization of graphene oxide (GO) thin films as the hole transport and electron blocking layer in organic photovoltaics (OPVs) is demonstrated. The incorporation of GO deposited from neutral solutions between the photoactive poly(3-hexylthiophene) (P3HT):phenyl-C61-butyric acid methyl ester (PCBM) layer and the transparent and conducting indium tin oxide (ITO) leads to a decrease in recombination of electrons and holes and leakage currents. This results in a dramatic increase in the OPV efficiencies to values that are comparable to devices fabricated with PEDOT:PSS as the hole transport layer. Our results indicate that GO could be a simple solution-processable alternative to PEDOT:PSS as the effective hole transport and electron blocking layer in OPV and light-emitting diode devices.

摘要

将氧化石墨烯（GO）薄膜用作有机光伏器件（OPVs）中的空穴传输和电子阻挡层。在光电活性聚（3-己基噻吩）（P3HT）：苯基-C61-丁酸甲酯（PCBM）层和透明导电氧化铟锡（ITO）之间沉积的 GO 的掺入，导致电子和空穴复合以及漏电流减少。这导致 OPV 效率显著提高，达到与使用聚（3,4-乙烯二氧噻吩）：聚苯乙烯磺酸盐（PEDOT：PSS）作为空穴传输层的器件相当的值。我们的结果表明，GO 可以作为一种简单的溶液处理型替代物，用于替代 PEDOT：PSS，作为 OPV 和发光二极管器件中的有效空穴传输和电子阻挡层。