Graphene-Au nanoparticle based vertical heterostructures: a novel route towards high- ZT Thermoelectric devices
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Type
ArticleAuthors
Juang, Zhen-YuTseng, Chien-Chih

Shi, Yumeng
Hsieh, Wen-Pin
Ryuzaki, Sou
Saito, Noboru
Hsiung, Chia-En
Chang, Wen-Hao

Hernandez, Yenny
Han, Yu

Tamada, Kaoru
Li, Lain-Jong

KAUST Department
Advanced Membranes and Porous Materials Research CenterChemical Science Program
Material Science and Engineering Program
Nanostructured Functional Materials (NFM) laboratory
Physical Science and Engineering (PSE) Division
Date
2017-06-03Online Publication Date
2017-06-03Print Publication Date
2017-08Permanent link to this record
http://hdl.handle.net/10754/624034
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Show full item recordAbstract
Monolayer graphene exhibits impressive in-plane thermal conductivity (>1000Wm–1 K–1). However, the out-of-plane thermal transport is limited due to the weak van der Waals interaction, indicating the possibility of constructing a vertical thermoelectric (TE) device. Here, we propose a cross-plane TE device based on the vertical heterostructures of few-layer graphene and gold nanoparticles (AuNPs) on Si substrates, where the incorporation of AuNPs further inhibits the phonon transport and enhances the electrical conductivity along vertical direction. A measurable Seebeck voltage is produced vertically between top graphene and bottom Si when the device is put on a hot surface and the figure of merit ZT is estimated as 1 at room temperature from the transient Harman method. The polarity of the output voltage is determined by the carrier polarity of the substrate. The device concept is also applicable to a flexible and transparent substrate as demonstrated.Citation
Juang Z-Y, Tseng C-C, Shi Y, Hsieh W-P, Ryuzaki S, et al. (2017) Graphene-Au nanoparticle based vertical heterostructures: a novel route towards high- ZT Thermoelectric devices. Nano Energy. Available: http://dx.doi.org/10.1016/j.nanoen.2017.06.004.Sponsors
This work was supported by the Ministry of Science and Technology of Taiwan under Contract No. MOST 104 – 2112 – M – 006 – 001, MOST 103–2112-M-001 −001 -MY3 and MOST 104–2112-M-001 −045. LJL, CCT, YS acknowledge the support from King Abdullah University of Science and Technology. Y.S. acknowledges the support from the Thousand Young Talents Program of China, the National Natural Science Foundation of China (Grant No. 51602200) and Educational Commission of Guangdong Province (Grant No. 2016KZDXM008). This project was supported by Shenzhen Peacock Plan (Grant No. KQTD2016053112042971).Publisher
Elsevier BVJournal
Nano EnergyAdditional Links
http://www.sciencedirect.com/science/article/pii/S2211285517303579ae974a485f413a2113503eed53cd6c53
10.1016/j.nanoen.2017.06.004