隨著時代變遷，AI及電動車迅速發展，伴隨能源大量消耗，石化能源日益減少及環保意識抬頭，人們開始積極探索替代能源，可再生能源也受到重視。熱電材料是一種可再生能源的應用，擁有舉足輕重地位。熱電元件能將熱能直接轉換為電能，或反向將電能轉換為熱能。這種雙向能量轉換的能力使其在能源回收、冷卻系統以及可再生能源應用中展現了巨大的潛力。 本實驗利用N型Mg2(SiSn)熱電材料製作出PN元件並且使40對PN元件焊接成大型熱電模組。Mg2Si混合固定比例Mg2Sn，透過粉末摻雜、混合、放上接觸金屬(焊接用)、冷壓成型、高溫燒結等步驟製作出N型Mg2(SiSn)熱電元件，同時在此階段進行電性量測和分析，進而確定粉末摻雜配比及合適焊接的接觸金屬。再來與實驗室同學研究的P型Mg2(SiSn)熱電塊材搭配，組成單對PN型熱電元件。最後我們選定擁有優異熱電性能的PN元件，大量製作單對PN元件，焊接使其串接成大型模組。;As technology advances, AI and electric vehicles are rapidly developing. The increasing energy consumption and depletion of fossil fuels, coupled with rising environmental awareness, have spurred interest in alternative energy sources, particularly renewable energy. Thermoelectric materials, which can convert heat into electricity and vice versa, play a critical role in this field, offering potential in energy recovery, cooling systems, and renewable energy applications. This experiment builds on previous research with N-type Mg2(SiSn) thermoelectric materials. We prepared N-type thermoelectric components by mixing a fixed proportion of Mg2Si with Mg2(SiSn), followed by powder doping, mixing, placing contact metals, cold pressing, and high-temperature sintering. Electrical measurements and analyses were conducted to determine the optimal doping ratios and contact metals. These N-type components were then paired with P-type Mg2(SiSn) materials to form single PN-type thermoelectric devices. Finally, we selected the best-performing PN devices and produced them in large quantities. These devices were welded into a large-scale module, achieving an output voltage of 1V.
