PbS对电极的制备及其对量子点敏化太阳能电池光电性能的影响

采用电化学沉积法在ITO透明导电玻璃上制备PbS纳米晶薄膜,研究其对量子点敏化太阳能电池光电性能的影响.研究发现,该PbS纳米晶薄膜由粒径约几十纳米到几百纳米的颗粒堆积而成,形成了较疏松的薄膜结构.X线衍射分析表明,该PbS为立方相结构.采用PbS薄膜作为对电极,CdSe量子点敏化TiO2纳米晶薄膜为光阳极组装电化学电池,电池的效率由Pt对电极的0.045%增大到0.098%,表明PbS对电极的电催化活性优于Pt对电极.

Preparation of PbS counter electrode and its influence on photoelectrochemical properties for quantum dot sensitized solar cell

Electrochemical deposition was used to prepare PbS nanocrystals thin film on FTO glass,and further research had been made to study its influence on photoelectrochemical properties for quantum dot sensitized solar cell.The results shows that the PbS nanocrystals thin film is formed by particles varied from dozens of nanometers to hundreds of nanometers,which shap a loose film structure.X-ray diffraction analysis indicates that the PbS is cubic phase structure.When using PbS film as counter electrode,The efficiency of solar cell using CdSe quantum dots sensitized TiO2 nanocrystals thin film as photoanode has increased from 0.045%of Pt counter electrode to 0.098%.The results indicates that PbS counter electrode has higher catalytic activity than that of Pt counter electrode.