MoS2 and CdMoS4 nanostructure-based UV light photodetectors
Mahendra S Pawar1,2, Sunil R Kadam3, Bharat B Kale3
1Physical and Material Chemistry Division, CSIR - National Chemical Laboratory Pune 411008 Maharashtra India datta099@gmail.com djlate@mum.amity.edu.
Nanoscale Advances
|September 22, 2022
Summary
Cadmium Molybdenum Sulfide (CdMoS4) hierarchical nanostructures demonstrate superior performance in UV light photodetectors compared to Molybdenum Disulfide (MoS2) nanosheets. These CdMoS4 nanostructures offer enhanced photoresponsivity and faster response/recovery times for UV detection applications.
Area of Science:
- Materials Science
- Nanotechnology
- Optoelectronics
Background:
- Photodetectors are crucial optoelectronic devices for light detection.
- Molybdenum Disulfide (MoS2) nanosheets are explored for photodetector applications.
- Developing novel nanostructures can enhance photodetector performance.
Purpose of the Study:
- To develop and compare UV light photodetectors based on MoS2 nanosheets and CdMoS4 hierarchical nanostructures.
- To investigate the surface morphology and performance characteristics of these photodetectors under UV illumination.
Main Methods:
- Synthesis of MoS2 nanosheets and CdMoS4 hierarchical nanostructures.
- Surface morphology characterization using Field Emission Scanning Electron Microscopy (FESEM) and Transmission Electron Microscopy (TEM).
- Performance evaluation of photodetectors under UV light (wavelength ~385 nm), measuring photoresponsivity, response time, and recovery time.
Main Results:
- CdMoS4 hierarchical nanostructures exhibited significantly better performance compared to MoS2 nanosheets.
- The CdMoS4-based photodetector showed enhanced photoresponsivity.
- Faster response (~72 s) and recovery (~94 s) times were observed for the CdMoS4 device.
Conclusions:
- CdMoS4 hierarchical nanostructures are highly effective for improving UV photodetector performance.
- The developed CdMoS4 nanostructures show practical potential for advanced UV detection applications.
