کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1664943 | 1518034 | 2014 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Cu-doped ZnO nanoporous film for improved performance of CdS/CdSe quantum dot-sensitized solar cells Cu-doped ZnO nanoporous film for improved performance of CdS/CdSe quantum dot-sensitized solar cells](/preview/png/1664943.png)
• Cu-doped ZnO powders were synthesized by co-precipitation method.
• Cu-doped ZnO nanoporous films with high crystallinity were uniformly deposited.
• Absorbance of Cu-doped ZnO nanoporous film was enhanced.
• Electron conductivity of Cu-doped ZnO nanoporous film was enhanced.
• Performance of Cu-doped ZnO CdS/CdSe QDSSC was improved.
Copper (Cu) doped zinc oxide (ZnO) powders were synthesized by co-precipitation method with different at% (0 and 0.5 at%) of Cu dopant. Cu-doped ZnO nanoporous (NP) films were fabricated to enhance the performance of the ZnO based cadmium sulfide (CdS) and cadmium selenide (CdSe) quantum dot-sensitized solar cells (QDSSCs). The existence of Cu ions in the Cu-doped ZnO NP film was detected by X-ray fluorescence. The surface morphology, microstructure and crystal structure of Cu-doped ZnO NP films were analyzed by scanning electron microscopy, transmission electron microscopy and X-ray diffraction. The optical property of CdS/CdSe co-sensitized Cu-doped ZnO NP film was studied by UV–vis absorption spectroscopy. The photovoltaic performance and electrical property of Cu-doped ZnO CdS/CdSe QDSSCs were studied by current–voltage characteristic curves and electrochemical impedance spectroscopy under air mass 1.5 condition. As a result, short circuit current density and fill factor increased from 9.074 mA/cm2 and 0.403 to 9.865 mA/cm2 and 0.427 respectively, based on the enhanced absorbance and electron transport by Cu-doping. This led to the increasing light conversion efficiency from 2.27% to 2.61%.
Journal: Thin Solid Films - Volume 570, Part B, 3 November 2014, Pages 310–314