FTO片电阻对染料敏化太阳能电池效率的影响

N. Bakr, Abdulrahman K. Ali, S. M. Jassim
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引用次数: 1

摘要

在这项工作中,DSSCs已经成功地用一个简单的程序,而不需要任何复杂的设备。对tio2薄膜进行XRD分析,证实其具有锐钛相的多晶结构,晶粒尺寸为12.4 nm。利用紫外可见光谱对TiO2薄膜和Z907染料的吸光度进行了表征。通过Tauc图估计TiO2薄膜的能隙为3.12 eV。TiO2薄膜的SEM显微照片表明,TiO2薄膜具有海绵状结构,气孔数量减少,有利于染料的吸附和电子的传递。afm显微图和粒度累积分布图显示,TiO2薄膜的平均粗糙度、均方根粗糙度和平均晶粒尺寸分别约为0.356 nm、0.423 nm和82.48 nm。采用8 Ω/片阻FTO涂层的玻璃基板制备的DSSC具有最高的短路密度(JSC)和转换效率(η),分别为4.069 mA/cm2和1.786%。随后,与涂覆15 Ω/片阻FTO的玻璃基板制备的DSSC的转换效率相比,效率提高了~ 84%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Effect of FTO Sheet Resistance on the Efficiency of Dye Sensitized Solar Cell
In this work, DSSCs have been fabricated successfully using a simpleprocedure without the need for any complicated facilities. The XRD analysis of theTiO2 film confirmed that it has a polycrystalline structure belonging to anatasephase with crystallite size of 12.4 nm. UV-Vis spectroscopy was used tocharacterize the absorbance spectrum of the TiO2 film and Z907 dye. The energygap of the TiO2 film estimated by Tauc’s plot was 3.12 eV. The SEM micrograph ofthe TiO2 film shows that the layer has a spongy shape with reduction in the numberof open pores making easy for dye adsorption and electron transport. The AFMmicrograph and the granularity cumulative distribution chart of the TiO2 film showsthat the average roughness, root mean square roughness and average grain sizewere about 0.356 nm, 0.423 nm and 82.48 nm respectively. The DSSC fabricatedusing glass substrates coated with 8 Ω/ sheet resistance FTO achieved the highestshort circuit density (JSC) and conversion efficiency (η) of 4.069 mA/cm2and1.786 %, respectively. Subsequently, the enhancement in efficiency was ~ 84 %compared with the conversion efficiency of DSSC fabricated using glass substratescoated with 15 Ω/ sheet resistance FTO.
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