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Enhanced thermopower of graphene films with oxygen plasma treatment

หน่วยงาน Nanyang Technological University, Singapore

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ชื่อเรื่อง : Enhanced thermopower of graphene films with oxygen plasma treatment
นักวิจัย : Xiao, Ni , Dong, Xiaochen , Song, Li , Liu, Dayong , Tay, Yee Yan , Wu, Shixin , Li, Lain-Jong , Zhao, Yang , Yu, Ting , Zhang, Hua , Huang, Wei , Hng, Huey Hoon , Ajayan, Pulickel M. , Yan, Qingyu
คำค้น : DRNTU::Engineering::Materials::Nanostructured materials. , DRNTU::Engineering::Materials::Plasma treatment.
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2554
อ้างอิง : Xiao, N., Dong, X., Song, L., Liu, D., Tay, Y. Y., Wu, S. et al. (2011). Enhanced Thermopower of Graphene Films with Oxygen Plasma Treatment. ACS Nano, 5 (4), 2749–2755. , http://hdl.handle.net/10220/7452 , http://dx.doi.org/10.1021/nn2001849
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : ACS nano
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

In this work, we show that the maximum thermopower of few layers graphene (FLG) films could be greatly enhanced up to ∼700 μV/K after oxygen plasma treatment. The electrical conductivities of these plasma treated FLG films remain high, for example, ∼104 S/m, which results in power factors as high as ∼4.5 x 10-3 W K-2 m-1. In comparison, the pristine FLG films show a maximum thermopower of ∼80 μV/K with an electrical conductivity of ∼5 x 104 S/m. The proposed mechanism is due to generation of local disordered carbon that opens the band gap. Measured thermopowers of single-layer graphene (SLG) films and reduced graphene oxide (rGO) films were in the range of -40 to 50 and -10 to 20 μV/K, respectively. However, such oxygen plasma treatment is not suitable for SLG and rGO films. The SLG films were easily destroyed during the treatment while the electrical conductivity of rGO films is too low, which makes FLG films unique for possible TE applications.

บรรณานุกรม :
Xiao, Ni , Dong, Xiaochen , Song, Li , Liu, Dayong , Tay, Yee Yan , Wu, Shixin , Li, Lain-Jong , Zhao, Yang , Yu, Ting , Zhang, Hua , Huang, Wei , Hng, Huey Hoon , Ajayan, Pulickel M. , Yan, Qingyu . (2554). Enhanced thermopower of graphene films with oxygen plasma treatment.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Xiao, Ni , Dong, Xiaochen , Song, Li , Liu, Dayong , Tay, Yee Yan , Wu, Shixin , Li, Lain-Jong , Zhao, Yang , Yu, Ting , Zhang, Hua , Huang, Wei , Hng, Huey Hoon , Ajayan, Pulickel M. , Yan, Qingyu . 2554. "Enhanced thermopower of graphene films with oxygen plasma treatment".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Xiao, Ni , Dong, Xiaochen , Song, Li , Liu, Dayong , Tay, Yee Yan , Wu, Shixin , Li, Lain-Jong , Zhao, Yang , Yu, Ting , Zhang, Hua , Huang, Wei , Hng, Huey Hoon , Ajayan, Pulickel M. , Yan, Qingyu . "Enhanced thermopower of graphene films with oxygen plasma treatment."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2554. Print.
Xiao, Ni , Dong, Xiaochen , Song, Li , Liu, Dayong , Tay, Yee Yan , Wu, Shixin , Li, Lain-Jong , Zhao, Yang , Yu, Ting , Zhang, Hua , Huang, Wei , Hng, Huey Hoon , Ajayan, Pulickel M. , Yan, Qingyu . Enhanced thermopower of graphene films with oxygen plasma treatment. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2554.