期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 44, 期 20, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/44/20/205403
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资金
- Ministry of Education, Science and Technology
- National Research Foundation of Korea [2010-0025973] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Sensing properties of the sensors fabricated with SnO2-ZnO core-shell nanofibres were investigated in terms of CO in a comparative manner with the sensors with normal ZnO and SnO2 nanofibres. The results clearly demonstrated that the sensing properties were sharply enhanced by forming a ZnO shell layer on the SnO2 fibres. The mechanism for the enhancement seems to be related to the formation of a fully depleted shell layer due to the presence of heterojunction between the ZnO shell and the SnO2 core fibre. This fully depleted shell layer is likely to pronounce the change in resistance during adsorption and desorption of gaseous species.
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