Semi-transparent reduced graphene oxide photodetectors for ultra-low power operation

Wei Chen Tu, Yi Hsiang Shih, Jing Hong Huang, Yu Cheng Chen

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


The emerged demand for high-performance systems promotes the development of two-dimensional (2D) graphene-based photodetectors. However, these graphene-based photodetectors are usually fabricated by an expensive photolithography and complicated transferred process. Here, a semi-transparent reduced graphene oxide (rGO) photodetector on a polyethylene terephthalate (PET) substrate with ultra-low power operation by simple processes is developed. The photodetector has achieved a transmittance about 60%, a superior responsivity of 375 mA/W and a high detectivity of 1012 Jones at a bias of -1.5 V. Even the photodetector is worked at zero bias, the photodetector exhibits a superior on/off ratio of 12. Moreover, the photoresponse of such photodetector displays little reduction after hundred times bending, revealing that the photodetector is reliable and robust. The proposed fabrication strategy of the photodetector will be beneficial to the integration of semi-transparent and low-power wearable devices in the future.

Original languageEnglish
Pages (from-to)14208-14217
Number of pages10
JournalOptics Express
Issue number10
Publication statusPublished - 2021 May 10

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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