光学学报, 2013, 33 (12): 1216001, 网络出版: 2013-11-19
二氧化钛阵列二氧化钛/石墨烯颗粒复合结构光阳极对染料敏化太阳能电池的改善
Improvement of Dye-Sensitized Solar Cells with TiO2 Nanoarray-TiO2/Graphene Nanocrystal Composite Film as Photoanode
光学器件 二氧化钛/石墨烯 二氧化钛阵列 丝网印刷 复合结构 optical devices TiO2/graphene TiO2 nanoarray screen printing composite structure
摘要
以石墨烯和钛酸丁酯为前驱体,在200 ℃下水热合成二氧化钛/石墨烯纳米复合颗粒,通过丝网印刷分别将其制备在掺氟SnO2透明导电玻璃(FTO)及氧化钛阵列上,应用扫描电子显微镜(SEM)和电池光电性能测试等方法来表征和测试。结果表明:在氧化钛阵列上复合二氧化钛/石墨烯纳米颗粒,以“颗粒+阵列”双层结构制备染料敏化太阳能电池光阳极,这种复合结构可提高电极对染料的吸附性并增强对紫外可见光的吸收。用这种复合结构做光阳极的电池比单纯的二氧化钛/石墨烯薄膜电池光电转化效率提高了35%,达到3.53%。
Abstract
TiO2/graphene nanocrystals are synthesized at 200 ℃ with graphene and Ti(OC4H9)4 as precursors by hydrothermal synthesis method, which is fabricated on fluorine-doped tin oxide (FTO) and TiO2 nanoarray films by screen-printing.The composite films are evaluated with scanning electron microscopy (SEM) and photovoltaic tests. The result shows that we print TiO2/graphene nanocrystals on the TiO2 nanoarrays to prepare the photoanode of dye-sensitized solar cells by the double-layer structure of “nanocrystal+nanoarray”, which increases the absorbability for dye and absorption of ultraviolet-visible. The efficiency of the cell which uses TiO2 nanoarray coated by TiO2/graphene nanocrystals film as photoanode increases by 35% comparing with the TiO2/graphene nanocrystals film, and the highest efficiency is 3.53%.
王蓉, 张海燕, 王文广, 刘慧. 二氧化钛阵列二氧化钛/石墨烯颗粒复合结构光阳极对染料敏化太阳能电池的改善[J]. 光学学报, 2013, 33(12): 1216001. Wang Rong, Zhang Haiyan, Wang Wenguang, Liu Hui. Improvement of Dye-Sensitized Solar Cells with TiO2 Nanoarray-TiO2/Graphene Nanocrystal Composite Film as Photoanode[J]. Acta Optica Sinica, 2013, 33(12): 1216001.