Photoactivated Mixed In-Plane and Edge-Enriched p-Type MoS2 Flake-Based NO2 Sensor Working at Room Temperature
| Autor: | Mahesh Kumar, Swaminathan Venkatesan, Abhay V. Agrawal, Alex Zakhidov, Rajesh Kumar, Guang Yang, Jiming Bao, Mukesh Kumar |
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| Rok vydání: | 2018 |
| Předmět: |
Fluid Flow and Transfer Processes
Materials science business.industry Sensing applications Process Chemistry and Technology Kinetics Bioengineering 02 engineering and technology Edge (geometry) 010402 general chemistry 021001 nanoscience & nanotechnology Toxic gas 01 natural sciences 0104 chemical sciences In plane Improved performance Transition metal Optoelectronics Enhanced sensitivity 0210 nano-technology business Instrumentation |
| Zdroj: | ACS Sensors. 3:998-1004 |
| ISSN: | 2379-3694 |
| Popis: | Toxic gases are produced during the burning of fossil fuels. Room temperature (RT) fast detection of toxic gases is still challenging. Recently, MoS2 transition metal dichalcogenides have sparked great attention in the research community due to their performance in gas sensing applications. However, MoS2 based gas sensors still suffer from long response and recovery times, especially at RT. Considering this challenge, here, we report photoactivated highly reversible and fast detection of NO2 sensors at room temperature (RT) by using mixed in-plane and edge-enriched p-MoS2 flakes (mixed MoS2). The sensor showed fast response with good sensitivity of ∼10.36% for 10 ppm of NO2 at RT without complete recovery. However, complete recovery was obtained with better sensor performance under UV light illumination at RT. The UV assisted NO2 sensing showed improved performance in terms of fast response and recovery kinetics with enhanced sensitivity to 10 ppm NO2 concentration. The sensor performance is also investig... |
| Databáze: | OpenAIRE |
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