• 文献标题:   Rapid preparation of conductive transparent films via solution printing of graphene precursor
  • 文献类型:   Article
  • 作  者:   LIU ZW, XIE YF, ZHAO J, WU SJ, ZHOU ZB, WEN M, CHENG YB, ZHONG J
  • 作者关键词:   graphene, solution printing, large area, rapid, perovskite solar cell
  • 出版物名称:   THIN SOLID FILMS
  • ISSN:   0040-6090
  • 通讯作者地址:   Wuhan Univ Technol
  • 被引频次:   2
  • DOI:   10.1016/j.tsf.2018.05.005
  • 出版年:   2018

▎ 摘  要

We report convenient approaches to obtain large-area conductive graphene films via a solution printing method. Spray deposition and blade coating were used to prepare graphene films as the representative printing methods. Some parameters, such as the reduction temperatures, pre-treatments of precursor, printing speeds and etc., were investigated to optimize the conductivities of samples. The prepared graphene oxide (GO) and reduced graphene oxide (rGO) films were characterized by X-ray diffraction, Raman spectroscopy, scanning electron microscopy, UV-vis spectroscopy and X-ray photoelectron spectroscopy. The results indicate that films prepared by spraying GO-hydrazine dispersion and blade coating GO solution possess good performance, including decent photoelectric property, crystal structure and a high carbon to oxygen ratio. Sheet resistances of 3.4k Omega/sq. (spray coating) and 3.6k Omega/sq. (blade coating) at around 75% transparency were obtained by measuring the printed conductive films. Moreover, the as-made rGO films were used as the transparent conductive layer for planar perovskite solar cells and achieved an efficiency of 3.38%.