Enhanced performance of photodetector and photovoltaic based on carrier reflector and back surface field generated by doped graphene

Che Wei Chang, Di Yan Wang, Wei Chun Tan, I. Sheng Huang, I. Sheng Wang, Chia Chun Chen, Ying Jay Yang, Yang Fang Chen

研究成果: 雜誌貢獻期刊論文同行評審

3 引文 斯高帕斯(Scopus)

摘要

We report the influence of carrier reflector and back surface field generated by doped graphene on n-ZnO nanoridges/p-silicon photodetectors and silicon solar cells. It is found that the p-type graphene not only acts as an electron blocking layer, but also helps the collection of photogenerated holes. Quite surprisingly, the on/off ratio of the photodetector with the insertion of doped graphene can be increased by up to 40 times. Moreover, we demonstrate that typical silicon solar cells with the doped graphene, the cell efficiency can be enhanced by about 20. Our approach would expand numerous applications for graphene-based optoelectronic devices.

原文英語
文章編號073906
期刊Applied Physics Letters
101
發行號7
DOIs
出版狀態已發佈 - 2012 八月 13

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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