Response Time Enhancement of a CdS/rGO Nanocomposite-Based Photoresistor

A CdS/rGO nanocomposite-based photoresistor was fabricated by a low-cost facile chemical bath deposition method, and was demonstrated to respond to white light more than three times faster than an as-prepared pristine CdS photoresistor. The presence of rGO, higher surface-to-volume ratio, dangling b...

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Bibliographic Details
Published in:Journal of electronic materials 2022-04, Vol.51 (4), p.1831-1837
Main Authors: Ghorban Shiravizadeh, Aziz, Khorramshahi, Vahid
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Electronics and Microelectronics
Instrumentation
Materials Science
Optical and Electronic Materials
Original Research Article
Solid State Physics
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Summary:A CdS/rGO nanocomposite-based photoresistor was fabricated by a low-cost facile chemical bath deposition method, and was demonstrated to respond to white light more than three times faster than an as-prepared pristine CdS photoresistor. The presence of rGO, higher surface-to-volume ratio, dangling bonds, and surface absorption by air can affect the electrical properties of the nanocomposite sample and tend to shorten the rise and decay time. The CdS/rGO nanocomposite-based photoresistor presents high conductivity and also responds to blue, green, and red light. X-ray diffraction analysis confirmed the reduction of graphene oxide, and the morphological properties were investigated by field emission scanning electron microscopy. The elemental composition of the materials was investigated by energy-dispersive x-ray analysis, and different electrical experiments were carried out to obtain the electrical properties. The response and decay time of the proposed photoresistor based on the CdS/rGO nanocomposite were 2.8 s and 7 s, respectively.
ISSN:0361-5235
1543-186X
DOI:10.1007/s11664-022-09448-3