全氧化鋅熱電元件接觸金屬開發及模組製作;Development of Zinc Oxide Thermoelectric Devices Contact Metal and Module Fabrication

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Title:	全氧化鋅熱電元件接觸金屬開發及模組製作;Development of Zinc Oxide Thermoelectric Devices Contact Metal and Module Fabrication
Authors:	謝丞哲;Hsieh, Cheng-Che
Contributors:	電機工程學系
Keywords:	熱電材料;氧化鋅;熱電模組;Thermoelectric
Date:	2024-07-23
Issue Date:	2024-10-09 17:08:29 (UTC+8)
Publisher:	國立中央大學
Abstract:	全球暖化議題備受各國關注，環境友善的再生能源成為眾人追尋的目標。隨著科技發展，熱電材料以其將熱能轉換成電能的特性，成為能源轉型的重要選擇之一。熱電材料利用材料兩端的溫度差發電，可將廢熱做二次利用，提高能源使用效率，廣泛應用於汽車、穿戴式裝置、航太科技等領域。不同熱電材料具有差異化的特性。氧化物半導體因其極佳的熱穩定性、無毒、成本低廉、環保且製備相對容易等優點，成為研究常用的熱電材料。透過研究單一試片的電性表現，可選擇最佳摻雜比例。再將N型及P型塊材串接組成熱電元件及模組，使塊材產生的輸出電壓能夠疊加，產生足夠的電能。本論文以氧化鋅為基礎，研究其熱電效能。透過分別摻雜2at%的Al2O3及CeO2，製備出N型氧化鋅材料。P型材料則透過摻雜0.1536at%的ZnP製備而成。以鋁金屬片作為N型試片與P型試片間的接觸金屬，並使用導電銀膠以及WU-4焊料焊接製作出熱電模組，進行後續的輸出電壓、短路電流、輸出功率量測。 ;Global warming has been widely discussed by various countries, and environmentally friendly renewable energy has become a common goal. With the advancement of technology, thermoelectric materials have emerged as one of the best options for energy transition. These materials can convert heat into electricity by utilizing the temperature difference between the two ends of the material, enabling the secondary use of waste heat and improving energy efficiency. This makes them suitable for applications in automobiles, wearable devices, aerospace technology, and more. The characteristics exhibited by each type of thermoelectric material vary. Oxide semiconductors are commonly used in research due to their excellent thermal stability, non-toxicity, low cost, environmental friendliness, and relatively easy fabrication. By studying the electrical performance of individual samples, we can determine the optimal doping ratios. By connecting N-type and P-type bulk materials in series, we can create thermoelectric devices and modules that allow the output voltage generated by the bulk materials to be combined, producing sufficient electrical power. This study investigates zinc oxide (ZnO) thermoelectric materials. By doping ZnO with 2 at% Al2O3 and CeO2, N-type materials were created, while the P-type material was obtained by doping ZnO with 0.1536 at% ZnP. Aluminum metal sheets were used as the contact metal between the N-type and P-type samples. Conductive silver paste and WU-4 solder were employed to fabricate the thermoelectric module, followed by subsequent measurements of output voltage, short-circuit current, and output power.
Appears in Collections:	[Graduate Institute of Electrical Engineering] Electronic Thesis & Dissertation

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