Low-power photodetectors based on PVA-modified reduced graphene oxide hybrid solutions

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 facto...

Full description

Saved in:
Bibliographic Details
Main 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
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2022
Subjects:
Online Access:https://hdl.handle.net/10356/162109
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-162109
record_format dspace
spelling sg-ntu-dr.10356-1621092022-10-04T06:40:09Z Low-power photodetectors based on PVA-modified reduced graphene oxide hybrid solutions 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 School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Low-Power Photodetectors 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. This research was supported by the Ministry of Science and Technology, Taiwan (109-2221-E-006 -212 and 110-2218-E-007 -052 -MBK). 2022-10-04T06:40:09Z 2022-10-04T06:40:09Z 2022 Journal Article 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-. https://dx.doi.org/10.1002/marc.202100854 1022-1336 https://hdl.handle.net/10356/162109 10.1002/marc.202100854 35254691 2-s2.0-85126179637 8 43 e2100854 en Macromolecular Rapid Communications © 2022 Wiley-VCH GmbH. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
Low-Power
Photodetectors
spellingShingle Engineering::Electrical and electronic engineering
Low-Power
Photodetectors
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
Low-power photodetectors based on PVA-modified reduced graphene oxide hybrid solutions
description 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.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
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
format Article
author 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
author_sort Shih, Yi-Shan
title Low-power photodetectors based on PVA-modified reduced graphene oxide hybrid solutions
title_short Low-power photodetectors based on PVA-modified reduced graphene oxide hybrid solutions
title_full Low-power photodetectors based on PVA-modified reduced graphene oxide hybrid solutions
title_fullStr Low-power photodetectors based on PVA-modified reduced graphene oxide hybrid solutions
title_full_unstemmed Low-power photodetectors based on PVA-modified reduced graphene oxide hybrid solutions
title_sort low-power photodetectors based on pva-modified reduced graphene oxide hybrid solutions
publishDate 2022
url https://hdl.handle.net/10356/162109
_version_ 1746219664391798784