标题:
水热法制备硫掺杂的TiO2染料敏化纳米晶太阳能电池光阳极
Sulfur-Doped TiO2 Nanocrystalline Photoanodes for Dye-Sensitized Solar Cells by Hydrothermal
作者:
王雷, 罗秋洋, 孙强, 诸跃进
关键字:
TiO2染料敏化纳米晶太阳能电池, 硫掺杂, 水热法
TiO2 Dye-Sensitized Solar Cells; Sulfur-Doped; Hydrothermal
期刊名称:
《Applied Physics》, Vol.3 No.3, 2013-05-23
摘要:
采用水热法制备了硫掺杂TiO2光阳极，并利用XRD、UV-vis、XPS对其进行表征和分析。结果表明，经过硫掺杂的TiO2是锐钛矿型；硫原子的掺杂提高了二氧化钛对可见光的吸收能力；硫掺杂过的DSSCs的性能发生了明显的改善，其中0.770 g硫脲样品的性能最优，开路电压为0.72 V，短路光电流密度为16.00 mA·cm−2，光电转换效率提高14.82%。效率的提高是由于硫掺杂使得从染料注入到TiO2纳米晶的电子增多，提高了电子的传输速率，使得电池的短路电流密度增加，从而提高了电池的效率。Sulfur-doped TiO2 photoanode was prepared by hydrothermal method, and then characterized and analyzed through XRD, UV-vis, and XPS. The results showed that: Sulfur-doped TiO2 doped by sulfur was anatase; Sulfur-doped TiO2 atoms improved visible light absorption ability of TiO2; The performance of DSSCs doped by sulfur improved markedly, in which 0.770 g thiourea sample performed the best. Its open-circuit voltage was 0.72 V, short-circuit current density was 16 mA·cm−2, and photoelectric conversion efficiency reached 14.82% high. The improvement of efficiency is resulted from the Sulfur-doped which leads to the following effects: more electrons from dyeare injected into the TiO2 nanometer crystal, the electron transfer rate is enhanced, therefore short circuit current density of the battery is increased, finally the efficiency of the battery is improved.