Rapid preparation of conductive transparent films via solution printing of graphene precursor

Ziwen Liu, Yifan Xie, Juan Zhao, Sijia Wu, Min Wen, Yi Bing Cheng, Jie Zhong

Research output: Contribution to journalArticleResearchpeer-review

6 Citations (Scopus)

Abstract

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 3.4 kΩ/sq. (spray coating) and 3.6 kΩ/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%.

Original languageEnglish
Pages (from-to)24-31
Number of pages8
JournalThin Solid Films
Volume657
DOIs
Publication statusPublished - 1 Jul 2018

Keywords

  • Graphene
  • Large area
  • Perovskite solar cell
  • Rapid
  • Solution printing

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