本文選題：染料敏化太陽電池 + 氧化錫��； 參考：《合肥工業(yè)大學(xué)》2016年碩士論文

【摘要】：染料敏化太陽能電池(DSSC)作為第三代太陽能電池,由于其成本低,無污染,工藝簡(jiǎn)單的優(yōu)點(diǎn)而受到社會(huì)廣泛關(guān)注。迄今,雖然利用TiO_2納米晶薄膜作為DSSC的光陽極已經(jīng)獲得初步的成功,但是單純的TiO_2納米晶薄膜的光利用率較低且表面電荷復(fù)合大。因此,通過一種簡(jiǎn)單有效的方法來提高光陽極的光利用率,減少表面復(fù)合,從而提高DSSC的整體性能是一個(gè)重要的研究方向。本論文利用水熱方法合成具有花狀分級(jí)結(jié)構(gòu)的TiO_2和SnO_2納米材料,利用TEM、SEM、XRD和XPS等手段對(duì)所合成的花狀TiO2、SnO2納米材料的形貌、晶型和表面化學(xué)結(jié)構(gòu)等參數(shù)進(jìn)行系統(tǒng)表征,并根據(jù)不同水熱反應(yīng)時(shí)間下得到的形貌特征對(duì)花狀TiO_2和SnO_2制備過程中的反應(yīng)原理進(jìn)行了分析驗(yàn)證,優(yōu)化花狀顆粒的制備工藝。將合成的花狀TiO_2材料和P25粉末進(jìn)行定量混合后,應(yīng)用于染料敏化太陽能電池光陽極的散射層中。結(jié)果發(fā)現(xiàn),表明利用合成的花狀顆粒和P25粉末混合制備的光陽極散射層的漫反射能力對(duì)比純P25光陽極有明顯的提升,且比表面積和染料吸附量并沒有由于花狀顆粒的摻入而減少。而EIS的測(cè)試結(jié)果也表明通過這些花狀顆粒的摻入可以有效改善了電子傳輸速率。最終使電池性能得到明顯提高。同時(shí),我們將不同反應(yīng)條件下合成的SnO_2花狀顆粒也用于DSSC光散射層中,并研究了散射顆粒形貌對(duì)電池性能的影響。結(jié)果表明,花狀SnO_2顆粒作為散射顆�？梢詼p小電子傳輸過程中的復(fù)合,此時(shí),組成花狀SnO_2的棒晶越完整,電子的傳輸阻力越小。最終,花狀SnO_2制備的DSSC效率達(dá)到6.71%。
[Abstract]:Dye-sensitized solar cells (DSSCs), as the third generation solar cells, have attracted wide attention due to their advantages of low cost, no pollution and simple process. Up to now, TiO-2 nanocrystalline thin films have been successfully used as photoanode for DSSC, but the light utilization ratio of TiO-2 nanocrystalline thin films is low and the surface charge recombination is large. Therefore, it is an important research direction to improve the optical efficiency of photoanode and reduce the surface recombination by a simple and effective method to improve the overall performance of DSSC. In this paper, TIO _ 2 and SnO _ 2 nanomaterials with flower-like grading structure were synthesized by hydrothermal method. The morphology, crystal structure and surface chemical structure of the nano-materials were systematically characterized by means of TEM, SEM, XRD and XPS. According to the morphology characteristics obtained under different hydrothermal reaction time, the reaction principle of the flower-like TiOs _ 2 and Sno _ 2 was analyzed and verified, and the preparation process of the flower-like particles was optimized. The synthesized TiO-2 and P25 powder were mixed quantitatively and then used in the scattering layer of the photoanode of the dye sensitized solar cell. The results show that the diffuse reflectance of the photoanodic scattering layer prepared by using the synthesized flower-like particles and P25 powder is obviously improved compared with the pure P25 photocathode. The specific surface area and dye adsorption amount were not decreased by the incorporation of flower-like particles. The EIS results also show that the electron transport rate can be improved by the incorporation of these flower-like particles. Finally, the battery performance is improved obviously. At the same time, the Sno _ 2 floral particles synthesized under different reaction conditions were also used in the light scattering layer of DSSC, and the effect of the morphology of the scattering particles on the performance of the cells was studied. The results show that the Sno _ 2 particles as scattering particles can reduce the recombination in the electron transport process. In this case, the more complete the rod crystal is, the smaller the electron transport resistance is. Finally, the efficiency of DSSC prepared by Sno _ 2 was 6.71%.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TM914.4

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