矽/鍺基奈米化塊材之熱電傳輸機制研究;Development of Si-Based and Ge-Based Nanostructured Thermoelectric Bulk Materials

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Title:	矽/鍺基奈米化塊材之熱電傳輸機制研究;Development of Si-Based and Ge-Based Nanostructured Thermoelectric Bulk Materials
Authors:	李勝偉;張仍奎;辛正倫
Contributors:	國立中央大學材料科學與工程研究所
Keywords:	熱電元件;熱電優值;聲子散射;矽鍺合金;矽化鎂;Thermoelectrics;Figure of merit;Phonon scattering;SiGe alloys;Mg silicides
Date:	2018-12-19
Issue Date:	2018-12-20 11:43:04 (UTC+8)
Publisher:	科技部
Abstract:	本雙邊共同研究計畫與華沙科技大學研究團隊合作針對低成本且兼具量產潛力的矽/鍺基熱電塊材之熱電優值係數ZT 提出有效的提升之道，並建構奈米化結構熱電性能之理論模型。本計畫將結合雙方優勢及特點，研究課題著重於低成本、前瞻、具量產潛力的奈米線矽/鍺化鎂熱電粉末及熱電塊材關鍵製程開發，同時佐以載子及熱流傳輸模型設計與量測分析。為達成此目標，計畫之執行策略將依熱電奈米線粉末開發、粉體材料的結構工程化設計與製作、火花電漿燒結製程開發以及微結構鑑定、熱電優值係數量測、奈米化結構提升熱電性能之理論模型建構等架構分層負責。本整合型計畫之主要研究議題架構如下圖所示: 本國際合作研究計畫之研究內容涵蓋創新的奈米製程工藝、優化奈米熱電塊材結構設計、量身定作的熱電理論模型以及熱電特性量測，由台灣學術界與波蘭華沙科技大學攜手合作，不僅可發揮學術創意與深入研究熱電材料之學理，更實際整合擴及熱電理論以及熱電實驗量測。研究成果更可作為爾後熱電科技與永續再生能源技術的基石。 ;The overall concept of the bilateral research project is illustrated as the following scheme. The engineering approach is constructed in loop that can be described in following steps: (1) first step is to define the requirements and overall specifications for the TE material, taking into account material and production process, as well as virtual model, (2) then material will be fabricated in the form of nano-powders and nanowires (3) next, the material is implemented to selected consolidation technology in order to produce samples, (4) the samples are characterized, tested and tuned-up to the needs defined by requirements related to the technical objective. Mentioned steps are repeated until developed materials meet the requirements. All these elements will be developed in an integrated way, i.e. by combining materials design with fabrication technology. Expected highly efficient thermoelectric materials will be used to construct TE power generators and/or TE refrigerators within future joint PL-TW/TW-PL research projects. Four technologies related work packages (WPs) have been set-up to achieve the challenging targets. The expertise gained through the work was collected and served as a basis for formulating requirements for current project focused on very promising materials based on magnesium alloys, namely silicide (Mg2Si) and germanide (Mg2Ge). This will have beneficial impact on the environment by significant energy savings and reduction of a greenhouse gas emission. Designing and manufacturing of highly efficient thermoelectric materials directly address material science and engineering aspects of research.
Relation:	財團法人國家實驗研究院科技政策研究與資訊中心
Appears in Collections:	[Institute of Materials Science and Engineering] Research Project

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