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

Authors :
Yu-Cheng Chen
Yi Hsiang Shih
Wei Chen Tu
Jing Hong Huang
Source :
Optics Express. 29:14208
Publication Year :
2021
Publisher :
Optica Publishing Group, 2021.

Abstract

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.

Details

ISSN :
10944087
Volume :
29
Database :
OpenAIRE
Journal :
Optics Express
Accession number :
edsair.doi.dedup.....57e2a45eda6a857faa4af36e3085a788
Full Text :
https://doi.org/10.1364/oe.419403