本文選題：染料敏化太陽(yáng)能電池 + 吲哚染料�。� 參考：《天津理工大學(xué)》2014年碩士論文

【摘要】：染料敏化太陽(yáng)能電池（DSSC），自從O’Regan和Gr tzel.報(bào)道后，作為一種新型的光伏技術(shù)，已經(jīng)被認(rèn)為是一種可靠的即將替代傳統(tǒng)的無(wú)機(jī)硅太陽(yáng)能電池，，因?yàn)樗鼈內(nèi)菀捉M裝，高效率，低成本。為了獲取更高的光電轉(zhuǎn)化效率，很多研究都集中在光敏染料的設(shè)計(jì)和合成上面，以及深入理解太陽(yáng)能電池界面間反應(yīng)的本質(zhì)過(guò)程。根據(jù)相關(guān)文獻(xiàn)報(bào)道，芳香胺有機(jī)染料的結(jié)構(gòu)容易修飾，分子容易合成，既有很高的摩爾消光系數(shù)，有很大的利用性，這些優(yōu)點(diǎn)使的芳香胺有機(jī)染料引起很大的關(guān)注。 在本文中，設(shè)計(jì)合成了三種新型吲哚類染料XS45-47，研究了染料中芴基和叔丁基苯結(jié)構(gòu)對(duì)電子復(fù)合的影響，具有大π鍵結(jié)合的芴基團(tuán)的引入促進(jìn)了吸收光譜的紅移和增大了摩爾吸光系數(shù)(ε)，同時(shí)抑制了電子在二氧化鈦/電解質(zhì)界面的復(fù)合；XS45和XS46具有D-A-π-A結(jié)構(gòu)，通過(guò)引入苯并噻二唑（BTD）吸電子基團(tuán)，拓寬染料的光譜響應(yīng)范圍。 進(jìn)一步研究了鈷電解質(zhì)（E2）DSSC的電流-電壓（J-V）曲線。鈷電解質(zhì)DSSC的PCE與碘電池有相同的趨勢(shì)，即XS45 XS47 XS46。所有的鈷電解質(zhì)電池相對(duì)于碘電解質(zhì)電池表現(xiàn)出, JSC顯著下降, VOC顯著增大。此外，無(wú)論選擇哪種電解質(zhì)或者膜厚，XS46的VOC值比XS45/XS47低。通過(guò)電荷提取技術(shù)測(cè)量開路電荷密度和控制強(qiáng)度調(diào)制光電壓譜（IMVS）測(cè)得的開路（τ）中的電子壽命，得出XS45/XS47的VOC比XS46高是因?yàn)殡娮訅勖黾恿�，即延遲電子復(fù)合速率，而不是TiO2的導(dǎo)帶位移。 在鈷電解質(zhì)中，膜厚為6μm電池比3μm的電池的JSC值高，可能由吸附的染料量的增加而引起。12μm的電池的JSC顯著降低，這是由于多吡啶鈷電解質(zhì)的質(zhì)量傳輸速度慢和電子易復(fù)合相關(guān)。另一方面，VOC隨著膜厚的增加而降低，這是因?yàn)槟け砻娣e增加，提供了額外的電子復(fù)合位點(diǎn)，增強(qiáng)了暗電流。對(duì)比碘電解質(zhì)，鈷電解質(zhì)電池中膜的厚度對(duì)電流的影響是不同的。雖然使用較厚的膜可以獲得的更好的光捕獲效率，但是也導(dǎo)致了JSC值下降。
[Abstract]:Dye-sensitized solar cells have been grown since O'Regan and Gr tzel. After the report, as a new type of photovoltaic technology, it has been considered a reliable alternative to the traditional inorganic silicon solar cells, because they are easy to assemble, high efficiency, low cost. In order to achieve higher photovoltaic conversion efficiency, many studies have focused on the design and synthesis of Guang Min dyes, as well as in-depth understanding of the essential process of the interfacial reaction of solar cells. According to the related literature, the structure of aromatic amine organic dyes is easy to modify and the molecules are easy to be synthesized, which has high molar extinction coefficient and great utilization. These advantages have attracted great attention of aromatic amine organic dyes. In this paper, three new indole dyes, XS45-47, were designed and synthesized. The effects of the structure of fluorene and tert- on the electron recombination were studied. The introduction of fluorene group with large 蟺 bond promotes the red shift of absorption spectrum and increases the molar absorptivity (蔚). At the same time, it inhibits the electron composition XS45 and XS46 with D-A- 蟺 -A structure at the TIO _ 2 / electrolyte interface. By introducing benzothiadiazolium (BTD) as an electron absorbent group, the spectral response range of dyes was broadened. The current-voltage J-V curves of cobalt electrolyte E 2 O 2 D DS SC have been further studied. The PCE of cobalt electrolyte DSSC has the same trend as that of iodine battery, that is, XS45 XS47 XS46. Compared with iodine electrolyte cells, JSC decreased significantly and VOC increased significantly in all cobalt electrolyte cells. In addition, the VOC value of XS46 is lower than that of XS45/XS47. The electron lifetime in open circuit (蟿) measured by charge extraction technique is obtained by measuring open circuit charge density and controlled intensity modulated photovoltage spectrum. It is concluded that the VOC of XS45/XS47 is higher than that of XS46 because of the increase of electron lifetime, that is, delayed electron recombination rate. Instead of the TiO2's conduction band displacement. In cobalt electrolyte, the JSC value of the cell with film thickness of 6 渭 m is higher than that of the cell with 3 渭 m film thickness, which may be caused by the increase of the amount of dye adsorbed, which may cause the decrease of JSC of the battery of .12 渭 m, which is due to the slow mass transfer speed of polypyridine cobalt electrolyte and the easy recombination of electrons. On the other hand, the VOC decreases with the increase of the film thickness, which is due to the increase of the membrane surface area, providing additional electron recombination sites and increasing the dark current. Compared with iodine electrolyte, the effect of the thickness of the film on the current of cobalt electrolyte battery is different. Though the thicker film can obtain better light capture efficiency, it also leads to the decrease of JSC value.
【學(xué)位授予單位】：天津理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：R914.5

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