Sunlight-activated graphene-heterostructure transparent cathodes: Enabling high-performance n-graphene/p-Si Schottky junction photovoltaics

Po Hsun Ho, Wei Chen Lee, Yi Ting Liou, Ya Ping Chiu, Yi Siang Shih, Chun Chi Chen, Pao Yun Su, Min Ken Li, Hsuen Li Chen, Chi Te Liang, Chun Wei Chen*

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

34 引文 斯高帕斯(Scopus)

摘要

Compared to widely-reported graphene-based anodes, the task of obtaining a stable graphene-based cathode is generally more difficult to achieve because n-type graphene devices have very limited thermal and chemical stabilities, and are usually sensitive to the influence of the ambient environment. This work developed a novel "sunlight-activated" graphene-heterostructure transparent electrode in which photogenerated charges from a light-absorbing material are transferred to graphene, resulting in the modulation of electrical properties of the graphene transparent electrode caused by a strong light-matter interaction at graphene-heterostructure interfaces. A photoactive graphene/TiOx-heterostructure transparent cathode was used to fabricate an n-graphene/p-Si Schottky junction solar cell, achieving a record-high power conversion efficiency (>10%). The photoactive graphene-heterostructure transparent electrode, which exhibits excellent tunable electrical properties under sunlight illumination, has great potential for use in the future development of graphene-based photovoltaics and optoelectronics.

原文英語
頁(從 - 到)2085-2092
頁數8
期刊Energy and Environmental Science
8
發行號7
DOIs
出版狀態已發佈 - 2015 七月 1

ASJC Scopus subject areas

  • 環境化學
  • 可再生能源、永續發展與環境
  • 核能與工程
  • 污染

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