Title :
CdS Quantum Dots Sensitized One-Dimensional ZnO Solar Cells with Improved Efficiency Using ZnS Shell Coating
Author :
Xuelian Yu ; Xin Song ; Jing Sun ; Xiwen Du
Author_Institution :
Sch. of Mater. Sci. & Eng., Tianjin Univ., Tianjin, China
Abstract :
CdS quantum dots (QDs) were adsorbed onto ZnO nanowire arrays by using a chemical bath deposition method in order to produce QD-sensitized solar cells (QDSSCs). Surface modification was done by coating ZnS layers onto the CdS QDs. The optical absorption and current-voltage characteristics of these devices were studied. The photovoltaic properties of short-circuit current density, open-circuit voltage, and photovoltaic conversion efficiency were improved after modifying the surface with ZnS coating.
Keywords :
II-VI semiconductors; adsorbed layers; cadmium compounds; current density; dip coating; nanofabrication; nanowires; semiconductor quantum dots; short-circuit currents; solar cell arrays; wide band gap semiconductors; zinc compounds; CdS-ZnO-ZnS; chemical bath deposition; coating layers; current-voltage characteristics; nanowire arrays; one-dimensional solar cells; open-circuit voltage; optical absorption; photovoltaic conversion efficiency; photovoltaic properties; quantum dot-sensitized solar cells; shell coating; short-circuit current density; surface modification; Chemicals; Coatings; Optical devices; Optical sensors; Photovoltaic cells; Photovoltaic systems; Quantum dots; Solar power generation; Zinc compounds; Zinc oxide;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2010 Asia-Pacific
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-4812-8
Electronic_ISBN :
978-1-4244-4813-5
DOI :
10.1109/APPEEC.2010.5449460
