表面銀奈米網絡結構形成的控制因素

Factors Controlling the Formation of a Surface Silver Nano-network Structure

鄧錦洲(Chin-Chou Teng)

指導教授 ： 楊志忠

共同指導教授 ： 江衍偉(Yean-Woei Kiang)

國立臺灣大學/電機資訊學院/光電工程學研究所/碩士(2018年)

https://doi.org/10.6342/NTU201802229

摘要

在本篇論文中，我們探討以不同實驗條件形成銀奈米網絡結構的特性。特別是我們實驗發現在氮化鎵基板內的貫穿差排會吸引熱電子聚集，成為銀奈米網絡結構的局部中心，從而形成銀奈米網絡結構。我們也針對點缺陷和表面氧化層對於形成銀奈米網絡結構之影響進行研究。點缺陷和表面氧化層都可增加在靠近導電基板表面的熱電子的平均自由徑，形成從局部中心更向外延伸的奈米網絡結構。我們實驗量測在不同條件下製作銀奈米網絡結構的穿透能力和片電阻值，以探討其應用價值。另外，我們發現一個銀奈米爆炸的新現象，奈米爆炸的過程，可以產生寬度幾奈米的線狀銀奈米絲，其長度可達數微米。最後，我們討論銀奈米網絡結構的應用潛力。

關鍵字

熱電子 ； 銀原子遷移 ； 位能障

並列摘要

The study of Ag nano-network formation under various conditions is continued in this thesis. In particular, we report the discovery that threading dislocations in GaN serve as the attraction sources of the hot electrons for forming the Ag nano-network structures. Also, we investigate the functions of point defects and surface oxide layers in the formation of nano-network structures. Both point defects and surface oxide layers can help in elongating the mean free path of hot electrons near the surface of the conductive template for forming more extended nano-network structures. The transmission levels and sheet resistance values of the Ag nano-network structures formed under various conditions are measured for evaluating their applications. Meanwhile, the novel phenomenon of Ag nano-explosion is discovered and demonstrated. The nano-explosion behavior forms thread-like Ag nanowires of several nm in cross-sectional size and a couple micron in length. Various potential applications of the nano-network structures are discussed.

並列關鍵字

Hot Electron ； Silver Atom Migration ； Potential Barrier

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