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Low-temperature growth of SnO2 nanorod arrays and tunable n-p-n sensing response of ZnO/SnO2 heterojunction for exclusive hydrogen sensors

หน่วยงาน Nanyang Technological University, Singapore

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ชื่อเรื่อง : Low-temperature growth of SnO2 nanorod arrays and tunable n-p-n sensing response of ZnO/SnO2 heterojunction for exclusive hydrogen sensors
นักวิจัย : Huang, Hui , Gong, Hua , Chow, Chee Lap , Guo, Jun , White, Timothy John , Tse, Man Siu , Tan, Ooi Kiang
คำค้น : DRNTU::Engineering::Electrical and electronic engineering::Nanoelectronics.
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2554
อ้างอิง : Huang, H., Gong, H., Chow, C. L., Guo, J., White, T. J., Tse, M. S., et al. (2011). Low-Temperature Growth of SnO2 Nanorod Arrays and Tunable n-p-n Sensing Response of ZnO/SnO2 Heterojunction for Exclusive Hydrogen Sensors. Advanced Functional Materials, 21, 2680-2686. , 1616-301X , http://hdl.handle.net/10220/7234 , http://dx.doi.org/10.1002/adfm.201002115 , 160001
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Advanced functional materials
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Uniform SnO 2 nanorod arrays have been deposited at low temperature by plasma-enhanced chemical vapor deposition (PECVD). ZnO surface modifi cation is used to improve the selectivity of the SnO 2 nanorod sensor to H 2 gas. The ZnO-modifi ed SnO 2 nanorod sensor shows a normal n-type response to 100 ppm CO, NH 3 , and CH 4 reducing gas whereas it exhibits concentrationdependent n–p–n transitions for its sensing response to H 2 gas. This abnormal sensing behavior can be explained by the formation of n-ZnO/p-Zn-O-Sn/n-SnO 2 heterojunction structures. The gas sensors can be used in highly selective H 2 sensing and this study also opens up a general approach for tailoring the selectivity of gas sensors by surface modification.

บรรณานุกรม :
Huang, Hui , Gong, Hua , Chow, Chee Lap , Guo, Jun , White, Timothy John , Tse, Man Siu , Tan, Ooi Kiang . (2554). Low-temperature growth of SnO2 nanorod arrays and tunable n-p-n sensing response of ZnO/SnO2 heterojunction for exclusive hydrogen sensors.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Huang, Hui , Gong, Hua , Chow, Chee Lap , Guo, Jun , White, Timothy John , Tse, Man Siu , Tan, Ooi Kiang . 2554. "Low-temperature growth of SnO2 nanorod arrays and tunable n-p-n sensing response of ZnO/SnO2 heterojunction for exclusive hydrogen sensors".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Huang, Hui , Gong, Hua , Chow, Chee Lap , Guo, Jun , White, Timothy John , Tse, Man Siu , Tan, Ooi Kiang . "Low-temperature growth of SnO2 nanorod arrays and tunable n-p-n sensing response of ZnO/SnO2 heterojunction for exclusive hydrogen sensors."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2554. Print.
Huang, Hui , Gong, Hua , Chow, Chee Lap , Guo, Jun , White, Timothy John , Tse, Man Siu , Tan, Ooi Kiang . Low-temperature growth of SnO2 nanorod arrays and tunable n-p-n sensing response of ZnO/SnO2 heterojunction for exclusive hydrogen sensors. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2554.