Photovoltaic and Impedance Spectroscopy Study of Screen-Printed TiO2 Based CdS Quantum Dot Sensitized Solar Cells

Materials

M. Atif¹  W. A. Farooq¹  Amanullah Fatehmulla¹  M. Aslam¹  Syed Mansoor Ali¹ 

[1] Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; E-Mails:

关键词: cadmium sulphide (CdS);    quantum dot;    solar cells;    photovoltaic;    impedance spectroscopy;   

DOI  :  10.3390/ma8010355

来源: mdpi

【 摘 要 】

Cadmium sulphide (CdS) quantum dot sensitized solar cells (QDSSCs) based on screen-printed TiO₂ were assembled using a screen-printing technique. The CdS quantum dots (QDs) were grown by using the Successive Ionic Layer Adsorption and Reaction (SILAR) method. The optical properties were studied by UV-Vis absorbance spectroscopy. Photovoltaic characteristics and impedance spectroscopic measurements of CdS QDSSCs were carried out under air mass 1.5 illuminations. The experimental results of capacitance against voltage indicate a trend from positive to negative capacitance because of the injection of electrons from the Fluorine doped tin oxide (FTO) electrode into TiO₂.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.