P型鎂矽錫熱電材料之製程開發及元件製作;Process Development of P-type Mg2(SiSn) Thermoelectric Materials and Devices

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题名:	P型鎂矽錫熱電材料之製程開發及元件製作;Process Development of P-type Mg2(SiSn) Thermoelectric Materials and Devices
作者:	邱思萍;Chiu, Ssu-Ping
贡献者:	電機工程學系
关键词:	鎂矽錫;熱電材料;熱電轉換效應;熱電優質;Seebeck effect
日期:	2022-07-28
上传时间:	2022-10-04 12:03:11 (UTC+8)
出版者:	國立中央大學
摘要:	目前發電能源主要以化石燃煤為主，近年來因工業發展迅速，能源無法無限供給，導致能源短缺與氣候暖化等問題產生，為了解決此問題，發展再生能源逐漸被重視。其中熱電發電被廣為討論，因熱電材料可將生活周遭的廢熱轉為電，其運作原理主要是利用溫差產生電位差，使電能與熱能以相互轉換的方式發電，因此是一種極具有發展性的綠色能源。本論文主要以P型 Mg2(SiSn) 熱電材料作為研究。嘗試調整製程條件與粉末比例，並對試片做量測與分析，選出具有最佳熱電特性的參數製作試片，並找出合適的金屬接觸進行元件製作，最後量測元件的輸出特性。其中測試出具有最佳特性的試片參數為Mg2SnAg0.02+25 at% Mg+4 at% Mg2Si。其試片具有最小電阻率約為1 mΩ-cm，最大賽貝克係數約為196μV/K，整體熱電優質最高可達0.13。將最佳參數的N、P型鎂矽錫試片，使用兩種方式，組成三組元件，並進行熱電性能的量測，其中以焊錫方式串接N、P試片的元件，最大輸出功率為21.7482μW。 ;Currently, fossil fuel energy is the main source of electricity. In recent years, owing to the rapid development of industry, energy supply has led to problems such as energy shortage and climate warming. In order to solve this problem, the development of renewable energy has gradually attracted attention. Among them, thermoelectric power generation is widely studied. Since the thermoelectric material can convert the waste heat into electrical energy, under a temperature difference, there will be a potential difference; thereby converting thermal energy into electrical energy. This dissertation mainly studies P-type Mg2(SiSn) thermoelectric materials. We tried to adjust the process parameters, measure and analyze the test samples, select the parameters with the best thermoelectric performance to make the device, find the metal contacts suitable for component manufacturing, and finally measure the output characteristics of the component. Among them, the component with the best characteristics are Mg2SnAg0.02+25at% Mg+4at% Mg2Si. The sample has a minimum resistivity of about 1 mΩ-cm, a maximum Seebeck coefficient of about 196 μV/K, and an overall maximum ZT of 0.13. The N-type and P-type Mg2(SiSn) coupons with the best parameters were made into three groups of elements in two ways, and their thermoelectric properties were measured. Among them, the components are welded in series, and the maximum output power is 21.7482 μW.
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