軟性有機薄膜電晶體：材料、製造、及其做為感測元件之應用

Flexible Organic Thin Film Transistors: Materials, Fabrication, and Their Applications as Sensing Devices

盧雅妮(Cut Rullyani)

指導教授 ： 林宏洲 ； 朱治偉

國立交通大學/工學院/材料科學與工程系所/博士(2018年)

摘要

由於有機薄膜晶體管(OTFT）具有吸引力的特性，包括機械靈活性，低溫處理和低成本製造，此技術能夠產生廣泛的新應用，如柔性顯示器，傳感器和其他電子功能。有機材料的採用也為綠色電子的開發提供了一個具有前景的發展，包括使用來自可再生資源的材料或可從普通商品中的材料製造而得。本論文主要涉及兩個主題;第一個是環境友好型OTFT的製造和分析，重點是電介質和柔性基板材料。第二個是OTFT在物理和化學傳感器方面的潛在應用。實驗結果將在第3章至第6章的四個單獨的章節中進行討論。第3章介紹了將從幾丁質脫乙酰獲得的殼聚醣和天然橡膠（從橡膠樹中提取）作為OTFT的基質和介電材料。殼聚醣/天然橡膠裝置表現出無遲滯和低電壓性能，並且發現在不同濃度的DNA下會產生電響應。在第4章中，聚碳酸亞丙酯（PPC）被用作OTFT和有機逆變器的電介質和基板材料。此PPC基板具有優異的透明度和可接受的機械性能，但當使用來自米根黴的脂肪酶時，它們能通過酶促降解而快速生物降解。第5章主要為介紹基於OTFT的溫度傳感器的製造和分析，該傳感器採用熱感應的高分子poly(N-isopropylacrylamide)，檢測範圍為30-45°C，靈敏度為0.5°C。第6章討論了汞離子（Hg2+）傳感器的製作和分析，其特徵是芘衍生物功能化。該傳感器在濃度範圍為1mM至0.01μM時對汞離子表現出高選擇性和靈敏度。 OTFT傳感器的實際應用可透過檢測自來水，湖泊和海水樣品中的25μM 汞 離子來證明。

關鍵字

有機薄膜電晶體 ； 傳感器 ； 可生物降解 ； 介電材料 ； 柔性基板

並列摘要

Attributed to their attractive properties, including mechanical flexibility, low-temperature processing, and low cost manufacturing, organic thin-film transistors (OTFTs) technology is able to generate a wide range of new applications such as flexible displays, sensors, and other electronic functions. Employing organic material also offer a promising opportunity for development of green electronic that comprises fabrication with materials from renewable resources or materials found in common commodity products. This thesis covers two main topics; the first one is the fabrication and characterization of environmental-friendly OTFTs, with focus on the dielectric and flexible substrate materials. The second is the potential application of OTFT for physical and chemical sensors. The experimental results are presented and discussed in four separated chapters, from chapter 3 to chapter 6. Chapter 3 introduces chitosan, obtained from deacetylation of chitin, and natural rubber (extracted from rubber tree) as substrate and dielectric materials for OTFTs. The chitosan/natural rubber device exhibited hysteresis free and low voltage performance, and it was found to give an electrical response in the presence of DNA with different concentrations. In chapter 4, polypropylene carbonate (PPC) is utilized as a dielectric and substrate material for OTFTs and organic inverter. The fabricated PPC substrate has excellent transparency and acceptable mechanical properties, yet they biodegraded rapidly through enzymatic degradation when using the lipase from Rhizhopus oryzae. Chapter 5 focuses on the fabrication and characterization of OTFT–based temperature sensor featuring thermosensitive poly(N-isopropylacrylamide), having a detection range of 30–45 °C with sensitivity of 0.5 °C. Chapter 6 discusses fabrication and characterization of mercury ion (Hg2+) sensor featured a pyrene derivative functionalized. The sensor exhibited high selectivity and sensitivity toward Hg2+ ions at concentrations range from 1 mM to 0.01 µM. The practical application of OTFT sensor was demonstrated through the sensing of 25 µM Hg2+ ions in tap, lake, and sea water samples.

並列關鍵字

Organic thin-film transistor ； sensor ； biodegradable ； dielectric materials ； flexible substrate

參考文獻

REFERENCES

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