Self-Crack-Filled Graphene Films by Metallic Nanoparticles for High-Performance Graphene Heterojunction Solar Cells

Po Hsun Ho, Yi Ting Liou, Chien Hsun Chuang, Shih Wei Lin, Chi Yang Tseng, Di Yan Wang, Chia Chun Chen, Wen Yi Hung, Cheng Yen Wen, Chun Wei Chen

Research output: Contribution to journalArticlepeer-review

53 Citations (Scopus)

Abstract

A novel approach for fabricating large-area crack-filled grapheme (CFG) films was reported, of which the intrinsic topological cracks in graphene are filled with Au nanoparticles through a simple reduction-oxidation reaction between the Cu substrate and the metal precursor solution. The CFG films were employed as a transparent electrode in fabricating graphene/Si Schottky junction solar cells. The CFG films exhibited superior electrical properties as a transparent electrode, showing substantial improvement in both the sheet resistance and series contact resistance compared with conventional as-grown grapheme films. A high-performance graphene/Si Schottky junction solar cell based on the CFG film showed a promising PCE of 12.3% and a high FF close to 0.8 because of the low series resistance at the heterojunction between graphene and a semiconductor. The CFG films in which the graphene cracks were filled by Au nanoparticles have immense potential for integration into the future industrial production of large-area, high-quality, graphene-based transparent electrodes or electronic devices.

Original languageEnglish
Pages (from-to)1724-1729
Number of pages6
JournalAdvanced Materials
Volume27
Issue number10
DOIs
Publication statusPublished - 2015 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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