【摘要】：有機半導體由于制備方法簡單、成本低廉、可實現室溫或者相對低溫的氣體敏感特性等優(yōu)勢,逐漸受到人們的密切關注。然而,有機半導體材料還存在成膜工藝復雜、有機膜與傳感器件兼容性較差、靈敏度低和響應速率慢等缺點,嚴重限制了有機半導體氣體傳感器的發(fā)展和應用。因此,本論文以酞菁鈷(CoPc),酞菁銅(CuPc)和聚苯胺等有機半導體為例,并研制相應的氣體傳感器和探索其氣敏特性,希望能夠改進或者解決以上問題,主要取得如下成果:(1)通過苯酐-尿素法合成酞菁鈷有機半導體,繼而采用氣液界面自組裝法制備酞菁鈷薄膜。系統(tǒng)研究熱激發(fā)狀態(tài)下酞菁鈷薄膜對NO_2的氣敏特性,并進一步深入探索紫外光激發(fā)下酞菁鈷薄膜的氣敏特性,期望實現對N0_2的室溫檢測。(2)以聚苯乙烯球陣列薄膜為模板,在電極上通過氧化聚合原位生長聚苯胺空心球陣列薄膜。研究了聚苯胺空心球陣列薄膜對胺類氣體的室溫檢測性能。通過改變聚苯乙烯模板的疏水性能,發(fā)現疏水性能夠促進聚苯胺空心球的形成;通過采用不同的有機酸摻雜,揭示了聚苯胺氣敏性能受有機酸種類的影響及其規(guī)律。(3)采用氣液界面自組裝法制備了無機/有機復合(Cu20/CuPc)敏感薄膜,發(fā)現了制備的敏感薄膜對三甲胺(TMA)具有響應能力快速(秒級),靈敏度高和分辨率好等優(yōu)點,該實驗為研制高性能TMA氣體傳感器提供了新的方法和解決途徑�；谝陨蟽热�,本論文不僅系統(tǒng)研究了基于有機半導體的氣體傳感器的制作工藝與氣敏特性,還為高性能有機半導體傳感器的制備提供了新的設計思路和途徑。
[Abstract]:Organic semiconductors have attracted more and more attention due to their advantages such as simple preparation, low cost and the ability to realize gas sensitivity at room temperature or relatively low temperature. However, organic semiconductor materials still have some disadvantages, such as complex film forming process, poor compatibility between organic film and sensor devices, low sensitivity and slow response rate, which seriously limit the development and application of organic semiconductor gas sensors. Therefore, this thesis takes organic semiconductors such as cobalt phthalocyanine cobalt (CoPc), phthalocyanine copper (CuPc) and Polyaniline as an example, and develops the corresponding gas sensor and explores its gas sensing characteristics, hoping to improve or solve the above problems. The main achievements are as follows: (1) Cobalt phthalocyanine thin films were synthesized by phthalic anhydride urea method and then prepared by gas-liquid interface self-assembly method. The gas sensing characteristics of cobalt phthalocyanine film to NO_2 under thermal excitation were studied systematically, and the gas sensing characteristics of cobalt phthalocyanine film under ultraviolet light excitation were further explored. (2) Polystyrene spherical array film was used as template, and the polyaniline hollow sphere array film was grown on the electrode by in situ oxidation polymerization. The room temperature detection properties of Polyaniline hollow sphere array films for amine gases were studied. By changing the hydrophobicity of polystyrene template, it is found that hydrophobicity can promote the formation of Polyaniline hollow spheres. The influence of organic acids on the gas sensitivity of Polyaniline was revealed by doping different organic acids. (3) Inorganic / organic composite (Cu20/CuPc) sensitive films were prepared by gas-liquid interface self-assembly method. It is found that the sensitive film has the advantages of fast response (second order), high sensitivity and good resolution to trimethylamine (TMA). This experiment provides a new method and solution for the development of high performance TMA gas sensor. Based on the above, this paper not only systematically studies the fabrication process and gas sensing characteristics of the gas sensor based on organic semiconductor, but also provides a new design idea and approach for the preparation of high performance organic semiconductor sensor.
【學位授予單位】：中國科學技術大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：O484

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