ZnO-SnO 2 core-shell nanowire networks and their gas sensing characteristics

In Sung Hwang, Sun Jung Kim, Joong Ki Choi, Jaewan Choi, Hyunjin Ji, Gyu-Tae Kim, Jong Heun Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The ZnO nanowires (NWs) are grown by carbothermal reaction and SnO 2 shell layers are subsequently coated by vapor phase growth. The crystalline SnO 2 shell layer with the thickness of 5-20 nm was uniformly coated on the ZnO NWs with the diameter of 50-100 nm. The gas response of ZnO-SnO 2 core-shell NWs sensor to 10 ppm NO 2 at 200°C was increased up to ∼33 times compared to those of ZnO NWs. The enhancement of gas responses to NO 2 was discussed in relation to the thin SnO 2 shell layer and core-shell configuration of NWs.

Original languageEnglish
Title of host publication2011 IEEE Nanotechnology Materials and Devices Conference, NMDC 2011
Pages396-397
Number of pages2
DOIs
Publication statusPublished - 2011 Dec 1
Event2011 IEEE Nanotechnology Materials and Devices Conference, NMDC 2011 - Jeju, Korea, Republic of
Duration: 2011 Oct 182011 Oct 21

Other

Other2011 IEEE Nanotechnology Materials and Devices Conference, NMDC 2011
CountryKorea, Republic of
CityJeju
Period11/10/1811/10/21

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ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Hwang, I. S., Kim, S. J., Choi, J. K., Choi, J., Ji, H., Kim, G-T., & Lee, J. H. (2011). ZnO-SnO 2 core-shell nanowire networks and their gas sensing characteristics. In 2011 IEEE Nanotechnology Materials and Devices Conference, NMDC 2011 (pp. 396-397). [6155385] https://doi.org/10.1109/NMDC.2011.6155385