溫度效應對雞蛋白有機場效電晶體之機械與電流特性探討

Explore the Temperature Effects on Chicken Albumen OFET from Mechanical and Electronic Properties

丁義洲(Ding Yizhou)

指導教授 ： 鄭友仁

國立中正大學/工學院/光機電整合工程研究所/碩士(2013年)

摘要

生物材料在近年來已獲得了眾多的關注。生物材料的優點為可生物降解(biodegradable)、可吸收(bioresorbable)、具生物相容性(biocompatible)、環保，且不需要化學合成。使用生物材料雞蛋白作為介電質應用於有機場效電晶體具有優良的性能。先前研究中對熱處理後蛋白薄膜之影響並未做詳盡之探討，僅以蛋白薄膜加熱之self polymer crosslinking作為優良介電層之機制，這也使我們產生熱處理對雞蛋白有機場效電晶體影響之興趣，並想深入探討熱處理雞蛋白薄膜對有機場效電晶體之影響因素。
本研究探討不同熱處理溫度下之雞蛋白薄膜表面形貌以及內部機械特性探討，經由雞蛋白薄膜特性探討在不同溫度下蛋白質有機場效電晶體輸出電流特性可能影響之因素。在雞蛋白薄膜部份，本研究由接觸角(Contact angle)發現在雞蛋白薄膜的親疏水基轉換之溫度為100℃~140℃，並且使用原子力顯微鏡(AFM)、奈米壓痕儀(Nano-indenter)以及電容值量測分別對蛋白薄膜進行表面以及內部探討。藉由上述薄膜之探討證實在不同溫度下薄膜表面特性以及電容特性改變並不大，因此我們可以證實不同溫度下之蛋白薄膜主要影響元件傳輸特性為其內部特性改變。並且利用X光繞射儀(XRD)探討不同溫度之雞蛋白薄膜上五環素(Pentacene)結晶強度以及二相性探討，由此證實不同溫度下之蛋白薄膜的親疏水基表面對五環素之結晶有著明顯的影響。最後藉由以上實驗之探討對往後之蛋白質有機場效電晶體製程上歸納出較好之製程溫度。

關鍵字

熱處理 ； 雞蛋白薄膜 ； 親疏水性 ； 五環素 ； 有機場效電晶體

並列摘要

In recent years, there is a lot of attention in biomaterials for organic electronics due to its biodegradable, bioresorbable, biocompatible and environmentally friendly properties. The albumen (egg white) is one kind of biomaterial. It can produce self-polymer crosslink by heating and use as a good dielectric layer. This dielectric layer can be utilized to produce organic field-effect transistor (OFET) that has a lot of applications in electronic industries. However, in the previous research, the characteristics of albumen dielectric layer (thin film) were not discussed in detail.
In this study, the surface morphology and internal mechanical characteristics of albumen thin film at different heating temperatures were investigated. At 100~140℃ temperature, the hydrophilic to hydrophobic change in albumen thin film was found by using contact angle. Atomic Force Microscopy (AFM), nano-indentation and capacitance measurement were utilized to characterize the albumen thin film. However, it was found that the internal characteristic of the albumen thin film was dominant on OFET. Therefore, X-ray Diffraction (XRD) method was used to analyze the internal characteristics such as the crystallization and dimorphic characteristics of pentacene. The results showed that the hydrophilicity of the albumen thin film at different temperatures has a significant impact on the crystallization of pentacene. Furthermore, the effect of temperature on OFET process was discussed.

並列關鍵字

Heat treatment ； Albumen thin film ； Hydrophilic、Hydrophobicity ； Pentacene ； OFET

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