10.4314/ejst.v12i1.5

Sisay Tadesse
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引用次数: 1

Abstract

Dye-sensitized solar cells (DSSCs), as low-cost photovoltaic devices compared to the silicon based solar cells, have received extensive attention recently; although much work is necessary to reach optimal device efficiencies. This paper reports the fabrication and characterization of dye sensitized solar cells using TiO 2 sensitized by eosin-Y. The electrodes, electrolyte (I − ∕I 3 − ), and dyes were assembled into a cell and illuminated by a light with an intensity 100 mWcm -2 to measure the photoelectrochemical parameters of the prepared DSSCs. According to the experimental results, the maximum quantum efficiency appeared at the wavelength of 510 nm with IPCE of 64.2%. The short circuit current density (J SC ), the open circuit voltage (V OC ), and power conversion efficiency (η%) were measured to be 6.4 mAcm -2 , 0.54 V, and 2.2%, respectively. The result of UV-visible absorption and IPCE measurement showed that the IPCE correlated to the absorption spectrum of the active layer. The IPCE and η% obtained in the present work was higher than the values reported earlier for the liquid state electrolyte system indicating that the quasi-solid-state electrolyte could substitute the liquid state.
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10.4314 / ejst.v12i1.5
与硅基太阳能电池相比,染料敏化太阳能电池(DSSCs)作为一种低成本的光伏器件近年来受到了广泛的关注。虽然要达到最佳的设备效率还需要做很多工作。本文报道了用伊红- y敏化二氧化钛染料敏化太阳能电池的制备和表征。将电极、电解质(I−∕I 3−)和染料组装成一个电池,用强度为100 mWcm -2的光照射,测量制备的DSSCs的光电化学参数。实验结果表明,在510 nm波长处量子效率最高,IPCE为64.2%。短路电流密度(jsc)、开路电压(V OC)和功率转换效率(η%)分别为6.4 mAcm -2、0.54 V和2.2%。紫外可见吸收和IPCE测量结果表明,IPCE与活性层的吸收光谱相关。本研究得到的IPCE和η%均高于之前报道的液态电解质体系,表明准固态电解质可以代替液态。
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