Open structure ZnO/CdSe core/shell nanoneedle arrays for solar cells

Open structure ZnO/CdSe core/shell nanoneedle arrays were prepared on a conducting glass (SnO(2):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 co...

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Detalles Bibliográficos
Autores principales: Chen, Yanxue, Wei, Lin, Zhang, Guanghua, Jiao, Jun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer 2012
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3475031/
https://www.ncbi.nlm.nih.gov/pubmed/22995031
http://dx.doi.org/10.1186/1556-276X-7-516
Descripción
Sumario:Open structure ZnO/CdSe core/shell nanoneedle arrays were prepared on a conducting glass (SnO(2):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/cm(2) and an overall power conversion efficiency of 1.07% with solar illumination of 100 mW/cm(2). Incident photo-to-current conversion efficiencies higher than 75% were also obtained.

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