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New Design of ZnO N...
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Duoc, Vo Thanh
(författare)
New Design of ZnO Nanorod- and Nanowire-Based NO2 Room-Temperature Sensors Prepared by Hydrothermal Method
- Artikel/kapitelEngelska2019
Förlag, utgivningsår, omfång ...
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HINDAWI LTD,2019
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electronicrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:uu-383211
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-383211URI
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https://doi.org/10.1155/2019/6821937DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
Anmärkningar
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Room-temperature gas sensors are attracting attention because of their low power consumption, safe operation, and long-term stability. Herein, ZnO nanorods (NRs) and nanowires (NWs) were on-chip grown via a facile hydrothermal method and used for room-temperature NO2 gas sensor applications. The ZnO NRs were obtained by a one-step hydrothermal process, whereas the NWs were obtained by a two-step hydrothermal process. To obtain ZnO NW sensor, the length of NRs was controlled short enough so that none of the nanorod-nanorod junction was made. Thereafter, the NWs were grown from the tips of no-contact NRs to form nanowire-nanowire junctions. The gas-sensing characteristics of ZnO NRs and NWs were tested against NO2 gas at room temperature for comparison. The gas-sensing characteristics of the sensors were also tested at different applied voltages to evaluate the effect of the self-activated gas-sensing performance. Results show that the diameter of ZnO NRs and NWs is the dominant parameter of their NO2 gas-sensing performance at room temperature. In addition, self-activation by local heating occurred for both sensors, but because the NWs were smaller and sparser than the NRs, local heating thus required a lower applied voltage with maximal response compared with the NRs.
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Biuppslag (personer, institutioner, konferenser, titlar ...)
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Le, Dang Thi Thanh
(författare)
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Hoa, Nguyen Duc
(författare)
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Duy, Nguyen Van
(författare)
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Hung, Chu Manh
(författare)
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Nguyen, Hugo,1955-Uppsala universitet,Mikrosystemteknik,Phenikaa Research and Technology Institute (PRATI), A&A Green Phoenix Group, 167 Hoang Ngan, Hanoi 100000, Vietnam(Swepub:uu)hugonguy
(författare)
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Hieu, Nguyen Van
(författare)
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Uppsala universitetMikrosystemteknik
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Journal of Nanomaterials: HINDAWI LTD1687-41101687-4129
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