本文選題：PEDOT + 電致變色��； 參考：《哈爾濱工業(yè)大學(xué)》2015年碩士論文

【摘要】：聚3,4-乙撐二氧噻吩(PEDOT)是一種較為常用的導(dǎo)電聚合物。作為功能層、導(dǎo)電層和空穴傳輸層,可廣泛應(yīng)用在電致變色、染料敏化太陽能電池和超級電容器等多種電化學(xué)和電儲能器件中。而相較于其他電致變色材料,PEDOT由于其對比度較低,且循環(huán)壽命較短,顏色單一,在實(shí)際應(yīng)用中受到了很大的制約。為了改善PEDOT薄膜的電致變色性能,本文采用電化學(xué)方法合成PEDOT薄膜,研究工藝參數(shù)對薄膜形貌、結(jié)構(gòu)、性能的影響,并構(gòu)筑了三維有序大孔(3DOM)薄膜,研究微結(jié)構(gòu)對薄膜性能的影響。設(shè)計(jì)組裝可以采用同極性著色材料組裝的器件,設(shè)計(jì)一套可向智能窗類應(yīng)用轉(zhuǎn)換的溫度控制變色算法,探索其可行性。在離子液體中采用恒電壓法電化學(xué)合成了PEDOT電致變色薄膜,分別討論了沉積電壓、單體濃度和沉積時(shí)間對薄膜性能的影響。研究結(jié)果表明EDOT(3,4-乙撐二氧噻吩)濃度為0.1 M,電壓1.2 V下沉積40 s,可得到性能最好的PEDOT薄膜。薄膜的對比度為61.8%,著色效率為238.7 cm2·C 1,著色時(shí)間為0.74 s。以703、552和428三種粒徑的聚苯乙烯膠體晶體為模板,采用恒電流沉積制備不同孔徑大小的3DOM PEDOT薄膜。確定工藝條件為:恒電流1*10-4mA/cm2沉積,四氫呋喃中浸泡10 h-12 h。測試并計(jì)算出三種不同孔徑3DOM PEDOT薄膜和無結(jié)構(gòu)PEDOT薄膜的擴(kuò)散系數(shù),發(fā)現(xiàn)3DOM薄膜的擴(kuò)散系數(shù)是無結(jié)構(gòu)薄膜的10倍。有序微結(jié)構(gòu)可有效降低薄膜的褪色電壓,且大幅提高了電致變色薄膜的循環(huán)性能,此外3DOM微結(jié)構(gòu)可以使薄膜的透過率波谷發(fā)生紅移,703nm模板制作的3DOM PEDOT薄膜波谷紅移了58 nm。由于有序結(jié)構(gòu)的布拉格衍射,薄膜表現(xiàn)出明顯的結(jié)構(gòu)色。以同極性著色材料制備的新型器件與單層的器件相比,電致變色性能有很大的提升,對比度從40%增大到了55%,循環(huán)150次基本無衰減,300次之后對比度為47%,褪色時(shí)間從362 ms減小到了203 ms。著色效率從91.18 cm2·C 1提高到181.55 cm2·C 1。設(shè)計(jì)了一套溫度控制的算法,并且將其一部分算法編譯為C語言,上載到單片機(jī)的RAM里,在實(shí)際使用中可以根據(jù)外界溫度控制器件的變色。
[Abstract]:Poly (3 o 4-ethylenedioxythiophene (PEDOT) is a common conductive polymer. As functional layer, conductive layer and hole transport layer, they can be widely used in electrochromic, dye sensitized solar cells, supercapacitors and other electrochemical and electric energy storage devices. Compared with other electrochromic materials, PEDOT is restricted in practical application because of its low contrast, short cycle life and single color. In order to improve the electrochromic properties of PEDOT thin films, PEDOT thin films were synthesized by electrochemical method. The effects of process parameters on the morphology, structure and properties of PEDOT thin films were studied. The effect of microstructures on the properties of the films was studied. The device can be assembled with the same polarity coloring material and a set of temperature-controlled discoloration algorithm which can be converted to the intelligent window application is designed to explore its feasibility. PEDOT electrochromic films were synthesized by constant voltage method in ionic liquids. The effects of deposition voltage, monomer concentration and deposition time on the properties of PEDOT films were discussed. The results show that the best PEDOT films can be obtained when the concentration of EDOT is 0.1 Mand the voltage is 1.2 V for 40 s. The contrast of the film is 61.8 and the coloring efficiency is 238.7 cm2 / C ~ (-1). The coloring time is 0.74 s. The 3Dom PEDOT films with different pore sizes were prepared by constant current deposition using three polystyrene colloidal crystals of 703552 and 428 sizes as templates. The process conditions were determined as follows: constant current 1*10-4mA/cm2 deposition, immersion in tetrahydrofuran for 10 h-12 h. The diffusion coefficients of 3 Dom PEDOT thin films and unstructured PEDOT thin films with different pore sizes are measured and calculated. It is found that the diffusion coefficients of 3Dom thin films are 10 times of those of unstructured films. The ordered microstructures can effectively reduce the fading voltage of the films and greatly improve the cyclic performance of the electrochromic films. In addition, the 3Dom microstructures can make the transmittance troughs of the films red shift from 703nm template to 58 nm. Due to the Bragg diffraction of the ordered structure, the film shows obvious structural color. Compared with single-layer devices, the electrochromic properties of the new devices prepared with the same polarity coloring materials have been greatly improved. The contrast is increased from 40% to 55, the contrast is 47m after 150 cycles without attenuation 300 times, and the fading time is reduced from 362 Ms to 203 Ms. The coloring efficiency was increased from 91.18 cm2 / C ~ (-1) to 181.55 cm2 C ~ (-1). A set of temperature control algorithms is designed and some of the algorithms are compiled into C language and uploaded into the RAM of a single chip microcomputer. In practice, the temperature controller can change color according to the external temperature controller.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TB383.2

【引證文獻(xiàn)】

相關(guān)會議論文 前2條

1 佘平平;汪正浩;;PEDOT的氧化還原動力學(xué)[A];第十三次全國電化學(xué)會議論文摘要集（上集）[C];2005年

2 陶益杰;程海峰;鄭文偉;張朝陽;劉東青;;聚合電位對PEDOT薄膜電致變色性能的影響[A];2011中國功能材料科技與產(chǎn)業(yè)高層論壇論文集（第二卷）[C];2011年

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本文編號：2113127