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https://hdl.handle.net/10356/137420
Title: | Development of high-performance bismuth sulfide nanobelts humidity sensor and effect of humid environment on its transport properties | Authors: | Muhammad Faheem Afsar Muhammad Aftab Rafiq Arifa Jamil Sajid Fareed Fizza Siddique Tok, Alfred Iing Yoong Muhammad Masood ul Hasan |
Keywords: | Engineering::Materials | Issue Date: | 2019 | Source: | Muhammad Faheem Afsar, Muhammad Aftab Rafiq, Arifa Jamil, Sajid Fareed, Fizza Siddique, Tok, A. I. Y., & Muhammad Masood ul Hasan. (2019). Development of high-performance bismuth sulfide nanobelts humidity sensor and effect of humid environment on its transport properties. ACS Omega, 4(1), 2030-2039. doi:10.1021/acsomega.8b01854 | Journal: | ACS Omega | Abstract: | Orthorhombic phase bismuth sulfide (Bi2S3) nanobelts were prepared via liquid-solid phase reaction method. Bi2S3 nanobelts were observed to be preferentially oriented along the (101) plane. Direct band gap (2.95 eV) and characteristic wavelength (λmax = 342 nm) were extracted through UV-visible spectroscopy. Specific surface area (9.8 m2/g) and pore size (2.5-120 nm) were evaluated through Brunauer-Emmett-Teller (BET) analysis. Relative humidity (RH) sensing properties were studied in the range of 11-97% RH at ambient conditions. The response of the sensor increases linearly with increase in RH. Fast response time (8-10 s) and recovery time (15 s) were observed. Reproducible and large response was also observed between 11 and 97% RH. Small hysteresis (<5%) and long-term stability during 30 days were confirmed. As a function of frequency, capacitance, alternating current conductivity, and electrical complex modulus in the frequency range of 20-2 MHz were studied at 11-97% RH. The sensing mechanism was also studied. | URI: | https://hdl.handle.net/10356/137420 | ISSN: | 2470-1343 | DOI: | 10.1021/acsomega.8b01854 | Rights: | © 2019 American Chemical Society. This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes. | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | MSE Journal Articles |
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Development of High-Performance Bismuth Sulfide Nanobelts Humidity Sensor and Effect of Humid Environment on its Transport Properties.pdf | 8.01 MB | Adobe PDF | View/Open |
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