Electrical conductivity of p-type BiOCl nanosheets
- Authors
- Myung, Yoon; Wu, Fei; Banerjee, Sriya; Park, Jeunghee; Banerjee, Parag
- Issue Date
- 2015
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- CHEMICAL COMMUNICATIONS, v.51, no.13, pp.2629 - 2632
- Indexed
- SCIE
SCOPUS
- Journal Title
- CHEMICAL COMMUNICATIONS
- Volume
- 51
- Number
- 13
- Start Page
- 2629
- End Page
- 2632
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/96163
- DOI
- 10.1039/c4cc09295c
- ISSN
- 1359-7345
- Abstract
- High quality BiOCl nanosheets were fabricated using facile, room temperature hydrolysis of Bi(NO3)(3) and HCl. The resulting nanosheets had dimensions of 500 nm with the exposed {001} facet. The band gap of the nanosheets was found to be 3.34 eV with conduction and valence band edges at -3.63 eV and -6.97 eV with respect to vacuum, respectively. The electrical conductivity of drop-cast BiOCl nanosheets was measured between aluminum patterned electrodes as a function of temperature and oxygen partial pressure (pO(2)). The activation energy for conduction in BiOCl was found to be 862 meV in the temperature range of 300-425 K and below 1000 mbar. The electrical conductivity varied with pO(2), indicating sigma proportional to pO(2)(1/4.05) and sigma proportional to pO(2)(1/32) for low and sub atmospheric pressures, respectively. A prototypical device for low temperature (425 K) O-2 sensing was demonstrated.
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Collections - Graduate School > Department of Advanced Materials Chemistry > 1. Journal Articles
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