臺灣博碩士論文加值系統

本研究為使用層接式胜肽共價鍵結技術(Layer-by-layer and peptide reaction covalently anchored technique)將氧化石墨烯(GO)固定於聚酯(PET)塑膠基板上的金電極，然後利用硼氫化鈉(NaBH4)將GO還原至部分還原程度的還原型氧化石墨烯(RGO)，並對其進行濕度及電子特性研究。
此可撓式阻抗型濕度感測器表現出優異的防水特性、廣泛的感測線性範圍、快速的反應/回覆時間、對溫度依賴性低及良好的長期穩定性。
部分還原型的RGO在相對低濕30%與相對高濕90% RH下的阻抗頻譜圖曲線特性，證明在低濕時是以電子傳導為主，在高濕時是以離子傳導為主。

Novel flexible humidity sensors were fabricated by layer-by-layer (LBL) covalently bonding graphene oxide (GO) to a gold electrode on a plastic substrate using a peptide chemical protocol and then reducing in-situGO film to a partially reduced GO film. The effect of the duration of reduction of GO film on the electrical and humidity propertiesof the reduced GO film was investigated. This flexible impedance-type humidity sensor exhibited a strong water resistance, a wide working range of humidities, a short response/recovery time, a weak dependence on temperature and good long-term stability. The different complex impedance plots obtained at low and high relative humidity indicated that the ions dominate the conductance of the anchored partially reduced GO film.

摘要 I
Abstract II
表目錄 VII
圖目錄 VIII
第一章緒論 1
1-1 濕度介紹與偵測重要性 1
1-2 研究動機 2
第二章理論基礎與材料介紹 4
2-1濕度表示法 4
2-1-1絕對濕度(Absolute humidity) 4
2-1-2飽和濕度(saturated humidity) 5
2-1-3百分率濕度(Percentage humidity) 5
2-1-4露點(dew point) 5
2-1-5比濕度(specific humidity) 6
2-1-6相對濕度(Relative Humidity) 7
2-2濕度感測器之感測特徵 8
2-3濕度感測器之分類 9
2-4濕度感測器之感測特性 10
2-4-1濕度量程(Working range) 10
2-4-2感濕特徵曲線(Humidity characteristic) 11
2-4-3感濕靈敏度(Sensitivity) 11
2-4-4溫度係數(Temper ature effect) 12
2-4-5反應時間(Response time) 14
2-4-6遲滯效應(Hysteresis) 14
2-4-7壓電特性 15
2-5濕度感測器種類與原理 15
2-5-1電容式濕度感測器 16
2-5-2電阻式濕度感測器 16
2-5-3光學式濕度感測器 16
2-6可撓式基材之探究 17
2-7石墨與石墨烯之歷史回顧 20
2-8氧化石墨還原製備法之歷史回顧 24
2-9元件製程方法原理 26
第三章實驗設計與分析 31
3-1 實驗藥品 31
3-2 實驗器材與量測儀器 32
3-2-1實驗器材 32
3-2-2量測儀器 34
3-2-3電性測量 35
3-3 實驗流程與步驟 39
3-3-1塑膠基板之前處理 42
3-3-2 複合胺基端於金電極之製備 42
3-3-3 還原氧化石墨烯感測層之製備 43
第四章結果與討論 44
4-1 可撓式濕度感測元件之材料特性 44
4-1-1旋轉塗佈法製膜之耐水性探討 44
4-1-2元件之表面結構分析探討 45
4-1-3元件之官能基團分析探討 48
4-2可撓式濕度感測元件之電性及濕度特性探討 49
4-2-1元件之材料電性分析探討 49
4-2-2 元件之耐水特性探討 52
4-2-3濕度元件的可撓性探討 53
4-3可撓式濕度感測之感濕基本特性探討 54
4-3-1可撓式濕度感測之感濕線性及遲滯效應探討 54
4-3-2可撓性濕度感測器之溫度係數影響濕度感應特性探討 56
4-3-3可撓性濕度感測器之外加頻率影響濕度感應特性探討 57
4-3-4可撓性濕度感測器之反應時間與回覆時間探討 58
4-3-5可撓性濕度感測器之長期穩定度探討 59
4-4可撓性濕度感測器感測特性之比較 60
4-5可撓性濕度感測器傳導機制探討 61
第五章結論 64
參考文獻 65

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