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

Citations 20

Updated on Mar 10, 2021

Citations 20

Updated on Mar 3, 2021

Page view(s)

Updated on May 26, 2022

Download(s) 50

Updated on May 26, 2022

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.