缺陷對紋理化鋸齒型石墨烯奈米帶熱電特性的影響

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Title:	缺陷對紋理化鋸齒型石墨烯奈米帶熱電特性的影響
Authors:	黃奕鈞;Huang, Yi-Jun
Contributors:	電機工程學系
Keywords:	缺陷;紋理化鋸齒型石墨烯奈米帶;熱電特性
Date:	2023-06-09
Issue Date:	2023-10-04 16:07:40 (UTC+8)
Publisher:	國立中央大學
Abstract:	熱電材料近年來是極熱門的研究方向，半導體熱電元件具有尺寸小、結構單純及可靠性高等優點，近年來是綠色能源的重要選項。而石墨烯奈米帶(Graphene Nanoribbons)則為一種很有潛力的熱電材料，近來，有文獻出現將鋸齒型石墨烯奈米帶(Zigzag Graphene Nanoribbons)有週期性的把上下兩端鋸齒邊緣的原子移除掉進而變成紋理化鋸齒型石墨烯奈米帶(textured ZGNRs)之方法，此種作法促使量子侷限效應的發生進而出現類似位障的效果，使金屬特性轉變為半導體特性。同時在製程中，材料可能出現缺陷(defect)，這種缺陷會因出現的位置不同對紋理化鋸齒型石墨烯奈米帶的熱電特性產生不同的影響，例如我們發現紋理化鋸齒型石墨烯奈米帶對於缺陷出現在結構內部造成的影響較不敏感。本文章將會著重在缺陷對紋理化鋸齒型石墨烯奈米帶的熱電特性的討論。;The semiconductor thermoelectric devices have the advantage of small size, simple structure, and high reliability, it is one of the most important green energies. Graphene nanoribbon is a very promising thermoelectric material. A method for turning zigzag graphene nanoribbons into textured zigzag graphene nanoribbons by periodically removing atoms from the zigzag edges at the top and bottom has been proposed. The indented edges induce cause quantum confinement effects, resulting in a barrier-like effect that transforms the metal characteristics into semiconductor characteristics. During the fabrication process, defects may occur in the material, and the effects of these defects on the thermoelectric properties of the textured zigzag graphene nanoribbons may vary depending on their location. We found that the textured zigzag graphene nanoribbons are less sensitive to defects in the interior sites.
Appears in Collections:	[Graduate Institute of Electrical Engineering] Electronic Thesis & Dissertation

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