Performance Enhancement of Large Area Solar Cells by Incorporating Nanophosphors: A ZnOS Demonstrator Solar Cell and Its Efficiency
Abstract
High quality ternary ZnO1-xSx (0<=x<=0) nanocrystals in the whole composition range were synthesized for the first time by chemical method. The composition dependence (0<=x<=0) of band gap, multi-phonon resonant Raman scattering and photoluminescence studies were carried out in detail. The energy band gaps of these ternary ZnO1-xSx(0<=x<=0) nanocrystals show strong bandgap bowing of 3.7 eV. The photoluminescence efficiency of the ternary nanocrystals is demonstrated in its use for enhancement of photovoltaic cell efficiency. Preliminary results demonstrate a 3% enhancement in the efficiency of ZnOS Demonstrator Solar Cell. To enhance the efficiency further, it is recommended 1) to improve the x values of down-conversion of the ZnO1-xSx (0<=x<=0) layers and luminescence activator center and 2) to improve the interface between nanophosphors of Si solar cells, as well as optimizing the thickness (in mm) to absorb and down conversion efficiently.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 16, 2009
- Accession Number
- ADA512649
Entities
People
- Rameshwar N. Bhargava