鋁摻雜氧化鋅及其熱電特性研究;Thermoelectric properties of Al-doped ZnO

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题名:	鋁摻雜氧化鋅及其熱電特性研究;Thermoelectric properties of Al-doped ZnO
作者:	洪群恩;Hung, Chun-En
贡献者:	電機工程學系
关键词:	鋁摻雜氧化鋅
日期:	2018-07-25
上传时间:	2018-08-31 14:53:02 (UTC+8)
出版者:	國立中央大學
摘要:	近年來，廢熱回收技術越發成熟，熱電模組的潛在應用相當可觀，如鋼鐵、水泥等製造業，或是家庭用電、汽車廢熱、太陽能發電等生活用電，熱電材料是靠溫差發電，但由於以往熱電材料至成之模組轉換效率較低，發展較為緩慢，隨著微奈米結構技術成熟，更多特性較佳之熱電材料被研究、討論，更多創意之科技利用陸續被開發，確實是一項值得期待的綠能科技。本論文將利用鋁摻雜之氧化鋅材料(AZO)，再嘗試複合2.5at%~20at%之硒化鋅或硫化鋅，並分析各種比例之熱電特性來做比較，我們發現當複合硒化鋅4.5at%時，其熱電特性較為優秀，因此我們再將此參數之熱電材料結合P-type熱電材料，製作出一熱電模組，來量測其發電功率。雖然本實驗透過複合硒化鋅，成功改善AZO之熱電特性，降低了熱導率，但是對於Seebeck係數並無明顯提升，希望能以此實驗為基石，在往後能尋找出更合適之複合材料或參數，研究出熱電特性更為優秀之材料。 ;In recent years, heat recovery technology has become more mature, and the potential applications of thermoelectric modules are considerable, such as manufacturing industries, or household electricity, automobile waste heat, solar power and other domestic electricity, thermoelectric materials rely on temperature difference power generation, but due to the low conversion efficiency of the thermoelectric materials in the past, the development is relatively slow. With the maturity of the micro-nano structure technology, more thermoelectric materials with better characteristics have been studied and discussed, and more creative technologies have been developed. It is a green energy technology worth looking forward to. This paper will use aluminum-doped zinc oxide material (AZO), and then try to compound 2.5at%~20at% zinc selenide or zinc sulfide, and analyze the thermoelectric characteristics of various proportions for comparison. We found that when compounding zinc selenide at 4.5at%, the thermoelectric characteristics are excellent. Therefore, we combine this thermoelectric material with P-type thermoelectric material to produce a thermoelectric module and measure its power generation. Although this experiment succeeded in improving the thermoelectric characteristics of AZO and reducing the thermal conductivity through the composite zinc selenide, it did not significantly improve the Seebeck coefficient. It is hoped that this experiment can be used for the future work, and try to find more suitable composite material in the future to develop better thermoelectric properties.
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