Please use this identifier to cite or link to this item: 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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