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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 林致廷 | |
dc.contributor.author | Che-Wei Huang | en |
dc.contributor.author | 黃哲偉 | zh_TW |
dc.date.accessioned | 2021-06-08T07:22:44Z | - |
dc.date.copyright | 2008-07-30 | |
dc.date.issued | 2008 | |
dc.date.submitted | 2008-07-23 | |
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[24] Huiling Tai, Yadong Jiang, Guangzhong Xie, Junsheng Yu, Xuan Chen, “Fabrication and gas sensitivity of polyaniline–titanium dioxide nanocomposite thin film,” Sensors and Actuators B, 2007, 125, 644–650. [25] Hua Bai and Gaoquan Shi.,” Review Gas sensors based on conducting polymers,” Sensors, 2007, 7, 267-307. [26] T. P. McAndrew, “Corrosion prevention with electrically conductive polymers,” TRIP.,1997, 5, 7-12. [27] Densakulprasert, N.; Wannatong, L.; Chotpattananont, D.; Hiamtup, P.; Sirivat, A.; Schwank, J. ,”Electrical conductivity of polyaniline/zeolite composites and synergetic interaction with CO,” Mater. Sci. Eng. B-Solid State Mater. Adv. Technol. ,2005, 117, 276-282. [28] Watcharaphalakorn, S.; Ruangchuay, L.; Chotpattahanont, D.; Sirivat, A.; Schwank, J.,”Polyaniline/polyimide blends as gas sensors and electrical conductivity response to CO-N-2mixtures,” Polym. Int., 2005, 54, 1126-1133. 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[34] Sadek, A.Z.; Wlodarski, W.; Shin, K.; Kaner, R.B.; Kalantar-zadeh, K.,” A layered surface acoustic wave gas sensor based on a polyaniline/In2O3 nanofibre composite,” Nanotechnology ,2006, 17, 4488-4492. [35] Misra, S.C.K.; Mathur, P.; Yadav, M.; Tiwari, M.K.; Garg, S.C.; Tripathi, P. “Preparation and characterization of vacuum deposited semiconducting nanocrystalline polymeric thin film sensors for detection of HCl,” Polymer, 2004, 45, 8623-8628. [36] Virji, S.; Fowler, J.D.; Baker, C.O.; Huang, J.X.; Kaner, R.B.; Weiller, B.H., “Polyaniline manofiber composites with metal salts: Chemical sensors for hydrogen sulfide,” Small, 2005, 1, 624-627. [37] Li, G.F.; Martinez, C.; Semancik, S.,” Controlled electrophoretic patterning of polyaniline from a colloidal suspension,” J. Am. Chem. Soc., 2005, 127, 4903-4909. [38] Athawale, A.A.; Bhagwat, S.V.; Katre, P.P. ,”Nanocomposite of Pd-polyaniline as a selective methanol sensor,” Sens. Actuators B, 2006, 114, 263-267. 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[2] Yang Li, Yousi Chen, Cong Zhang, Tianxiang Xue, Mujie Yang.,” A humidity sensor based on interpenetrating polymer network prepared from poly(dimethylaminoethyl methacrylate) and poly(glycidyl methacrylate),” Sens. Actuators B, 2007, 125, 131-137. [3] Che-Hsin Lin, Ching-Hsiu Chen.,” Sensitivity enhancement of capacitive-type photoresistor-based humidity sensors using deliquescent salt diffusion method,” Sens. Actuators B, 2008, 129, 531-537. [4] P.M. Harrey, B.J Ramsey, P.S.A. Evans, D.J. Harrison.,” Capacitive-type humidity sensors fabricated using the offset lithographic printing process,” Sens. Actuators B, 2002, 87, 226-232. [5] M.L. Singla, Sajeela Awasthi, Alok Srivastava.,” Humidity sensing; using polyaniline/Mn3O4 composite doped with organic/inorganic acids,” Sens. Actuators B 2007, 127, 580-585. [6] Zheng-Tao Zhu, Jeffrey T. Mason, Rudiger Dieckmann, and George G. Malliaras. “Humidity sensors based on pentacene thin-film transistors,” Appl. Phys. Lett., 2002, 81, 4643-4645. [7] Li, G.F.; Martinez, C.; Semancik, S.,” Controlled electrophoretic patterning of polyaniline from a colloidal suspension,” J. Am. Chem. Soc., 2005, 127, 4903-4909. [8] C. Cantalinic, M. Pelino, “Microstructure and humidity sensitive characterstics of _-Fe2O3 ceramic sensors, “ J. Am. Ceram. Soc., 1992, 75, 546–551. [9] A.Z. Sadek, W. Wlodarski, K. Kalantar-Zadeh, C. Baker, R.B. Kaner,”Doped and dedoped polyaniline nanofiber based conductometric hydrogen gas sensors,” Sens. Actuat. A Phys., 2007, 139, 53–57. [10] Li, G.F.; Martinez, C.; Semancik, S.,” Controlled electrophoretic patterning of polyaniline from a colloidal suspension,” J. Am. Chem. Soc., 2005, 127, 4903-4909. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/26726 | - |
dc.description.abstract | 不論是在居家生活、醫療保健和各式工廠環境,溼度皆是極為重要的環境因子,因此,濕度感測元件及材料是產官學研發展的重要領域之ㄧ,然而,這些研究領域仍有許多限制待突破,例如:感測元件需要加溫以正常運作、製作方法複雜。為了進一步提升此一領域的發展,本研究嘗試開發以摻雜金屬離子的聚苯胺高分子材料製作的溼度感測元件,經實驗驗證此濕度感測元件擁有高的靈敏度和選擇性、反應時間快、可在室溫操作和低消耗功率等特性。
以高分子材料製作的感測元件相對於一般以傳統半導體材料製成的感測元件的優勢在於其製作步驟簡單、成本低廉並且可在室溫操作,另外,要具有實用性必需再考量感測元件的反應時間、選擇性和消耗功率的大小,為滿足這些要求,本研究利用鐵離子和鋁離子摻雜在聚苯胺材料中,以提升其對濕度的靈敏度和選擇性。為了驗證此濕度感測器元件具備前述的優點、特性,因此將其放入特製的氣腔中,作一系列包括電阻性、靈敏度、選擇性和反應時間的測試,在室溫下,當氣腔中通入水氣時,反應時間大約在數秒到數十秒內,通過感測元件的電流可因濕度的不同,具有從一到三個數量級左右的變化,對電流變化大小取對數運算後和通入水氣濃度大小關係亦可近似線性;並且在固定濕度下,調變電壓測電流變化,亦呈現線性關係,代表此材料有良好電阻特性,增加此材料日後的實用性;為了要證明材料的選擇性,於是更進ㄧ步的將氮氣、二氧化碳、一氧化碳、氨氣和乙醇氣體進行選擇性的驗證,在經過正規化後,上述氣體造成的影響皆小於12%,綜合以上實驗結果,研究開發的摻雜金屬離子的聚本胺溼度感測器確實擁有高靈敏度和選擇性、反應時間快、可在室溫操作和低消耗功率的特性。 本研究清楚證明用摻雜鐵與鋁離子的聚苯胺薄膜所製成的電阻式溼度感測元件,其具備高靈敏度、高選擇性、可重覆性和反應時間快的特性。此外,其製作步驟和界面電路簡單,不僅降低製作成本也增進其在各應用層面實現的能力,極有潛力做為溼度感測材料並應用在各式方面領域。 | zh_TW |
dc.description.abstract | Humidity is one of the most important parameters in various application fields, such as medical treatment and semiconductor industry. Therefore, there are many research groups focus on developing new humidity sensing materials. However, various limitations, such as high-temperature operations and complex fabrication process, impede the implementation of the developed humidity sensors. To overcome these obstacles, a novel humidity sensing material based on doped-polyaniline is developed in this work. In specific, this work demonstrates the developed humidity sensor with high linearity/sensitivity, high selectivity, low power consumption, fast response and room- temperature operations.
Conducting polymers have many good material and mechanical properties, such as low cost, easy synthesis through chemical processes. Based on these advantages, hence, conducting polymers are one of the probable candidates for humidity sensing in practical applications. Consequently, we develop an innovative humidity sensing material based on the ferric-chloride/aluminum-chloride as dopants to improve the the doped polyaniline sensitivity and selectivity to the humidity. To prove the sensitivity characteristics of the developed sensor, the sensor device is placed in the controlled environment. As the device exposed to the different relative humidity (RH), the current flowing through the doped-polyaniline thin film is measured. The extremely low current obtained from the device reveals the low power consumption property. In addition, it should be noted that the device current increases two orders within a few seconds as the sensor exposed to the vapor. This fast response with the predictable linearity clearly illustrates feasibilities of the device for humidity sensing. Furthermore, the device is exposed to different gases including CO, N2 , CO2, C2H5OH, and NH3 to demonstrated the device selectivity. Apparently, the current difference generated by other kinds of gases is smaller than 12%. These experimental results demonstrate that the developed humidity sensor has high sensitivity, high selectivity, fast response, room- temperature operations and low power consumption. In this work, this newly developed doped polyaniline humidity sensor has been proved to have high sensitivity, repeatability and fast response characteristics. In addition, the simple fabrication process and interface circuit which decrease the manufacturing costs and improve the capabilities to be implemented into various applications. This investigation shows the developed polyaniline doped with Fe-Al ions has the potential to be applied to humidity sensing material in various aspects. | en |
dc.description.provenance | Made available in DSpace on 2021-06-08T07:22:44Z (GMT). No. of bitstreams: 1 ntu-97-R95943172-1.pdf: 1822223 bytes, checksum: 3f4ecd3125ec948b6f9a91716c5d125c (MD5) Previous issue date: 2008 | en |
dc.description.tableofcontents | 緒論
1-1研究背景………………………………………………………………………. 1 1-2 研究目的與動機……………………………………………………………… 3 1-3 研究流程與論文架構………………………………………………………… 4 參考文獻…………………………………………………………………………... 4 第二章 文獻回顧 2-1 陶瓷濕度感測材料…………………………………………………………… 5 2-2 半導體式濕度感測材料……………………………………………………… 7 2-3 電解質濕度感測材料………………………………………………………… 8 2-4 導電高分子材料……………………………………………………………… 9 2-4-1導電性高分子之發展…………………………………………………… 9 2-4-2聚苯胺導電高分子……………………………………………………… 11 2-4-3聚苯胺導電原理………………………………………………………… 12 2-4-4導電高分子於氣體感測的應用………………………………………… 15 參考文獻…………………………………………………………………………… 20 第三章 實驗方法 3-1 聚苯胺材料的製備……………………………………………………………. 23 3-1-1 實驗藥品………………………………………………………………... 23 3-1-2 實驗儀器………………………………………………………………… 24 3-1-3 配置摻雜鐵和鋁離子聚苯胺材料……………………………………… 25 3-2 指差電極的製作………………………………………………………………. 26 3-3 溼度感測元件製作與實驗架構………………………………………………. 27 3-4 量測與擷取資料………………………………………………………………. 28 第四章 結果與討論 4-1 聚苯胺的材料分析……………………………………………………………. 29 4-1-1 傅利葉轉換紅外線光譜分析 ( FTIR ) ……………………………….. 29 4-1-2 紫外光-可見光光譜分析 ( UV-VIS ) ………………………………… 32 4-1-3 掃瞄式電子顯微鏡 ( Scanning Electron Microscopy, SEM) …………. 34 4-2 聚苯胺溼度感測元件的特性………………………………………………… 37 4-2-1 聚苯胺薄膜的電流與電壓特性………………………………………. 37 4-2-2 相對濕度(RH)變化與電流關係……………………………………….. 38 4-2-3 選擇性(selectivity) …………………………………………………….. 43 4-2-4 可重複性(repeatability) ………………………………………………... 45 4-2-5 預熱特性探討………………………………………………………….. 47 4-2-6 溫度依賴性…………………………………………………………….. 48 參考文獻…………………………………………………………………………... 50 第五章 總結與展望………………………………………………………………. 52 圖目錄 圖2-1-1 多孔性陶瓷材料掃描式電子顯微鏡圖………………………………... 6 圖2-1-2 α- Al2O3 的電容和電阻對濕度分別在11℃,25℃,40℃的關係圖... 6 圖2-2-1 N型濕度感測材料的兩種反應機制…………………………………… 7 圖2-4-2-1 聚苯胺基本結構圖…………………………………………………… 11 圖2-4-3-1 常見的導電高分子、導體、半導體和絕緣體在導電度方面的比較.. 12 圖2-4-3-2 導電高分子聚苯胺摻雜後的電子狀態……………………………… 13 圖2-4-3-3 導電高分子在摻雜前後的能階示意圖……………………………… 14 圖2-4-4-1 聚苯胺與一氧化碳的反應機制(一)…………………………………. 18 圖2-4-4-2 聚苯胺與一氧化碳的反應機制(二)…………………………………. 18 圖2-4-4-3 聚苯胺對氨氣的感測機制…………………………………………… 19 圖3-2-1 指差電極製作簡易流程圖....................................................................... 26 圖3-3-1 實驗架構圖……………………………………………………………... 27 圖4-1-1-1 聚苯胺FTIR光譜圖…………………………………………………. 30 圖4-1-1-2 苯胺和甲醛聚合反應………………………………………………… 31 圖4-1-2-1 聚苯胺未摻雜鐵和鋁離子的紫外光-可見光光譜………………….. 33 圖4-1-2-2 聚苯胺摻雜鐵和鋁離子的紫外光-可見光光譜……………………… 33 圖4-1-3-1 (a)未摻雜的聚苯胺表面型態SEM圖像……………………………… 35 圖4-1-3-1 (b)未摻雜的聚苯胺表面型態SEM圖像……………………………… 35 圖4-1-3-2 (a)摻雜的聚苯胺表面型態SEM圖像………………………………… 36 圖4-1-3-2 (b)摻雜的聚苯胺表面型態SEM圖像………………………………… 36 圖4-2-1 相對溼度(RH) 56%與室溫攝氏24度環境下,聚苯胺薄膜的電流與電壓特 性曲線圖………………………………………………………………… 37 圖4-2-2-1 (a) 偏壓3伏特室溫下,溼度由RH 33%增至37%,電流對時間關係圖 39 圖4-2-2-1 (b) 偏壓3伏特室溫下,溼度由RH 34%增至46%,電流對時間關係圖 39 圖4-2-2-1 (c) 偏壓3伏特室溫下,溼度由RH 35%增至39%,電流對時間關係圖 40 圖4-2-2-1 (d) 偏壓3伏特室溫下,溼度由RH 34%增至53%,電流對時間關係圖 40 圖4-2-2-1 (e) 偏壓3伏特室溫下,溼度由RH 35%增至54%,電流對時間關係圖 41 圖4-2-2-1 (f) 偏壓3伏特室溫下,溼度由RH 35%增至60%,電流對時間關係圖 41 圖4-2-2-2 溼度變化對電流變化統計圖表……………………………………….. 42 圖4-2-3-1 在室溫偏壓3伏特情況下,利用五種氣體:一氧化碳、氨氣、氮氣、 乙醇和二氧化碳對摻雜鐵與鋁離子的聚苯胺進行選擇性的測試…. 44 圖4-2-4-1 圖中(1)(2)(3)起始RH大約為35%,當注入水氣時(ON的時候),其RH 分別改變為53%、55%和59%,經過大約300至400秒的時間,將水 氣移除(OFF的時候),使溼度回復至原先大小附近,電流也以極快的速 度回復到起始值……………………………………………………. 46 圖4-2-5-1 將電源供應器關閉10分鐘後,電源打開(power on)瞬間,感測元件電流 立刻呈現在其背景溼度下應有的電流大小…………………………. 47 圖4-2-6-1 溼度感測元件電流對溫度關係圖,直接以加熱板加熱…………… 49 圖4-2-6-2 溼度感測元件電流對溫度關係圖,以燈泡和加熱板加熱………… 49 圖5-1 製作於印刷電路板上的溼度感測系統………………………...………… 53 | |
dc.language.iso | zh-TW | |
dc.title | 高靈敏性聚苯胺微感測器之研製 | zh_TW |
dc.title | Development of High Sensitivity Micro-Humidity Sensor based on Polyaniline | en |
dc.type | Thesis | |
dc.date.schoolyear | 96-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 郭宇軒,楊燿州 | |
dc.subject.keyword | 溼度感測器,聚苯胺, | zh_TW |
dc.subject.keyword | humidity sensor,polyaniline, | en |
dc.relation.page | 53 | |
dc.rights.note | 未授權 | |
dc.date.accepted | 2008-07-23 | |
dc.contributor.author-college | 電機資訊學院 | zh_TW |
dc.contributor.author-dept | 電子工程學研究所 | zh_TW |
顯示於系所單位: | 電子工程學研究所 |
文件中的檔案:
檔案 | 大小 | 格式 | |
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ntu-97-1.pdf 目前未授權公開取用 | 1.78 MB | Adobe PDF |
系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。