Dye-Sensitized Solar Cells Fabricated by Electrospray Coating Using TiO2 Nanocrystal Dispersion Solution
Dye-Sensitized Solar Cells Fabricated by Electrospray Coating Using TiO2 Nanocrystal Dispersion Solution
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DOI：
10.1149/1.2179368
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发表时间：
2006-05
影响因子：
3.9
通讯作者：
M. Fujimoto;T. Kado;W. Takashima;K. Kaneto;S. Hayase
中科院分区：
文献类型：
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作者：
M. Fujimoto;T. Kado;W. Takashima;K. Kaneto;S. Hayase
采用二氧化钛纳米晶分散于水中(DSC-ESC)制备了染料敏化太阳能电池(DSC-ESC)。并与传统包覆方法(DSC涂层)制备的DSC进行了比较。前者的短路电流(Jsc)高于后者。两种DSC在TiO2层中的电子寿命和电子扩散系数差异不大。两者在吸附染料分子的量上没有太大的差异。只观察到通过TiO2层的限制电流(I-3扩散)的差异。DSC-ESC涂层的极限电流高于DSC-涂层。综合前人关于ESC法制备的TiO2层的分形结构以及ESC法沉积的TiO2针表面容易生长出针状TiO2层的事实，我们得出结论：DSC-ESC的TiO2层比DSC涂层中的TiO2层更容易形成离子路径。
Dye-sensitized solar cells (DSCs) were fabricated by an electrospray coating method using TiO 2 nanocrystal dispersion (P25) in water (DSC-ESC). They were compared with DSCs prepared by conventional coating methods (DSC-COAT). The former had higher short-circuit current (J sc ) than the latter. Electron lifetime and electron diffusion coefficient in TiO 2 layers did not vary largely between the two DSCs. Large differences were not observed between them in terms of the amount of dye molecules adsorbed on TiO 2 . Differences were observed only for limiting currents (I - 3 diffusion) through TiO 2 layers. The limiting current for DSC-ESC was higher than that of DSC-COAT. Considering the previous reports on fractal structures prepared by the ESC method and the fact that needle-like TiO 2 tends to grow on deposited TiO 2 needles by using the ESC method, we conclude that ionic paths are formed better in TiO 2 layers of DSC-ESC than in those of DSC-COAT.