Low-Power Photodetectors Based on PVA-Modified Reduced Graphene Oxide Hybrid Solutions

Yi Shan Shih, Wei Chen Li, Jun Hao Shen, Shao Yu Chu, Wu Yih Uen, Hsin Ying Lee, Gong Ru Lin, Yu Cheng Chen, Wei Chen Tu

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Photodetectors based on reduced graphene oxide (rGO) have attracted much attention owing to their simple and low-cost fabrication process. However, the aggregation and defects of rGO flakes still limit the performance of rGO photodetectors. Controlling the composition of rGO has become a vital factor for its prospective applications. For example, the interconnection between rGO and polymers for modified morphologies of rGO films leads to an enhanced performance of devices. In this work, a practical approach to engineer surface uniformity and enhance the performance of a photodetector by modifying the rGO film with hydrophilic polymers poly(vinyl alcohol) (PVA) is reported. Compared with the rGO photodetector, the on/off ratio for the PVA/rGO photodetector shows 3.5 times improvement, and the detectivity shows 53% enhancement even when the photodetector is operated at a low bias of 0.3 V. This study provides an effective route to realize PVA/rGO photodetectors with a low-power operation which shows promising opportunities for the future development of green systems.

Original languageEnglish
Article number2100854
JournalMacromolecular Rapid Communications
Issue number8
Publication statusPublished - 2022 Apr

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry


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