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Title: Low-power photodetectors based on PVA-modified reduced graphene oxide hybrid solutions
Authors: Shih, Yi-Shan
Li, Wei-Chen
Shen, Jun-Hao
Chu, Shao-Yu
Uen, Wu-Yih
Lee, Hsin-Ying
Lin, Gong-Ru
Chen, Yu-Cheng
Tu, Wei-Chen
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2022
Source: Shih, Y., Li, W., Shen, J., Chu, S., Uen, W., Lee, H., Lin, G., Chen, Y. & Tu, W. (2022). Low-power photodetectors based on PVA-modified reduced graphene oxide hybrid solutions. Macromolecular Rapid Communications, 43(8), e2100854-.
Journal: Macromolecular Rapid Communications
Abstract: 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.
ISSN: 1022-1336
DOI: 10.1002/marc.202100854
Rights: © 2022 Wiley-VCH GmbH. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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