Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 1 of 1
Full-Text Articles in Physics
Open Structure Zno/Cdse Core/Shell Nanoneedle Arrays For Solar Cells, Yanxue Chen, Lin Wei, Guanghua Zhang, Jun Jiao
Open Structure Zno/Cdse Core/Shell Nanoneedle Arrays For Solar Cells, Yanxue Chen, Lin Wei, Guanghua Zhang, Jun Jiao
Physics Faculty Publications and Presentations
Open structure ZnO/CdSe core/shell nanoneedle arrays were prepared on a conducting glass (SnO2:F) substrate by solution deposition and electrochemical techniques. A uniform CdSe shell layer with a grain size of approximately several tens of nanometers was formed on the surface of ZnO nanoneedle cores after annealing at 400°C for 1.5 h. Fabricated solar cells based on these nanostructures exhibited a high short-circuit current density of about 10.5 mA/cm2 and an overall power conversion efficiency of 1.07% with solar illumination of 100 mW/cm2. Incident photo-to-current conversion efficiencies higher than 75% were also obtained.