Performance of ZnO-Nb2O5 core/shell and aluminium doped ZnO electron transporting layer with CdS/CdSe quantum dot-sensitized solar cells

Indian Journal of Pure & Applied Physics

article

P Venkatachalam¹  S Rajalakshmi³ 

[1] Department of Physics, Annamalai University;Department of Physics, Periyar Arts College;Department of Physics, University College of Engineering Panruti

关键词: Quantum dot solar cell;    Core/shell structure;    Doping;    XRD;    TEM;    Photovoltaic;    EIS;    Article;   

来源: National Institute of Science Communication and Information Resources

【 摘 要 】

In the present investigation, solar cells have been fabricated using Cds/CdSe quantum dots sensitized ZnO photoanode for solar cell application. Photocurrent-voltage analysis and electrochemical impedance spectroscopy (EIS) measurements have been performed to investigate the electron transport and recombination of charge carriers in quantum dot-sensitized solar cells (QDSSCs) based on ZnO photoanodes. This dynamic study reveals that the CdS/CdSe sensitized aluminium (Al) doped ZnO NPs photoanode solar cell performs ultrafast electron transport and high charge collection efficiency (80 %). As a consequence, a power conversion efficiency as high as 5.32 % (JSC = 12.86 mA/cm2, VOC = 600 mV, FF = 69 %) for aluminium doped ZnO NPs/CdS/CdSe photoelectrode based QDSSC is observed under one sun AM 1.5 G illumination (100 mW cm-2). This result highlights the necessity of treating QD-sensitized solar cells from another perspective than dye sensitized solar cells, considering the fundamental differences in their behavior.

【 授权许可】

Unknown