Solution-processable graphene oxide as an insulator layer for metal-insulator-semiconductor silicon solar cells

Chao Ping Liu, Yeung Yu Hui, Zhen Hua Chen, Jian Guo Ren, Ye Zhou, Libin Tang, Yong Bing Tang, Juan Antonio Zapien, Shu Ping Lau

Research output: Journal article publicationJournal articleAcademic researchpeer-review

18 Citations (Scopus)


Development of a high quality but low cost insulating layer is important for its application in photovoltaic cells. In this work, solution processable graphene oxide (GO) thin films were first utilized as an insulating layer to construct MIS silicon solar cells. The efficient water-soluble GO nano-sheets with controlled thickness produced a good contact with the hydrophilic silicon surfaces. The average open circuit voltage (VOC) of the GO incorporated MIS silicon solar cell was increased by 0.2 V, while their power conversion efficiency (PCE) was demonstrated as 88% higher than that of the corresponding Schottky solar cells. The improvement of the device performance in the GO-based MIS silicon solar cell is attributed to the increased built-in potential as well as the reduced interface defect, resulting in reduced carrier recombination. The ability to establish a low-cost and solution-processable insulating layer will open the door for wide application in photovoltaic and other optoelectronic devices.
Original languageEnglish
Pages (from-to)17918-17923
Number of pages6
JournalRSC Advances
Issue number39
Publication statusPublished - 21 Oct 2013

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering


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