標題: Enhanced thermoelectricity of three-dimensionally mesostructured BixSb2-xTe3 nanoassemblies: from micro-scaled open gaps to isolated sealed mesopores
作者: Chen, Tsung-Han
Lin, Ping-Yu
Chang, Hsiu-Cheng
Chen, Chun-Hua
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 7-Mar-2017
摘要: We describe an innovative interfacial design concept and nanostructuring of novel BixSb2-xTe3 (BST) nanoassembled films comprising unique air-solid interfaces from micro-scaled open gaps to isolated sealed mesopores, and high-quality solid-solid ones including the coherent grain boundaries and specific twins, utilizing pulsed laser deposition (PLD), for potentially activating multiple thermoelectric enhancing mechanisms. The unusual mesopore embedded BST films exhibit the highest power factor of similar to 33 mu W cm(-1) K-2, which is comparable to or higher than the previously reported values for BST, and the corresponding relatively low thermal diffusivity in contrast to that for dense pore-less BST films evidently reveals the crucial role of the three-dimensionally and densely arranged air-solid interfaces in significantly arising the phonon scattering.
URI: http://dx.doi.org/10.1039/c7nr00132k
http://hdl.handle.net/11536/144464
ISSN: 2040-3364
DOI: 10.1039/c7nr00132k
期刊: NANOSCALE
Volume: 9
起始頁: 3283
結束頁: 3292
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