溶液相銅奈米線之合成與其於透明導電電極上的應用

The Synthesis of Copper Nanowire in Solution Phase and their Application in Transparent Conductive Electrode

張晏誠(Yen-Cheng Chang)

指導教授 ： 段興宇

國立清華大學/工學院/化學工程學系/碩士(2012年)

摘要

本篇研究中，細、長且分散良好的銅奈米線可藉由晶種促進生長機制於有機相中得到。銅奈米線平均長度約為37.7μm，平均直徑約為46nm，其長寬比高達820為相當高的一個值。對奈米線導電膜而言，奈米線長度越長有利於片電阻的下降。我們以簡單、易操作且低成本的噴塗塗佈(spray coating)製備透明導電電極且詳細的研究他們的電性與穿透度的表現。在光電性質上，我們的直流導電率和光學導電率最好可達到比值(σDC/σOp)逼近300，這個數值僅次於銀奈米線導電玻璃。穿透度90%片電阻50Ω/sq的透明導電電極可被製備。另外，我們也測試了銅奈米線薄膜在大氣環境下的穩定性，經過一個多月的放置片電阻只有小幅度上升，具有一定的電性穩定性。

關鍵字

溶液相 ； 奈米線 ； 透明導電電極

並列摘要

In this study, thin, long, and well-dispersed copper nanowires were obtained via the seed-mediated growth in an organic solvent-based synthesis. The mean length and diameter of nanowire are about 37.7 μm and 46 nm with a high aspect ratio of 820. These wires were used for nanowire conducting films since their relatively long length is advantage in lowering the sheet resistance. Transparent conducting copper nanowire electrodes were prepared by a simple, facile and low cost spray coating method and their properties were characterized. Transparent electrode with optical transmittance and sheet resistance of 90% and 50Ω/sq was obtained. A relatively high value of 300 for the optoeletricial property, σDC/σOp, was obtained, only inferior to silver nanowire-based conducting glass. Moreover, the copper nanowire films maintained their electrical stabilities upon exposed to the ambient over more than one month.

並列關鍵字

solution phase ； nanowire ； transparent conductive electrode

參考文獻

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