To enhance the performance of ZnO-CuO bulk Heterojunction solar cell, Silicon nanoparticles (Si-NPs) prepared from extracted c-Si from Padma river sand using alumino thermic reduction were used. It is experimentally confirmed that the optical and photovoltaic performance of Spin coated bulk ZnO_CuO is enhanced by using Si-NPs. Here, prepared Si-NPs was dispersed first in 2-propanol and then this 2-propanol with Si-NPs was used for one pot synthesis of bulk ZnO-CuO. Thereafter, the bulk ZnO-CuO with Si-NPs heterojunction was fabricated using spin coating technique. Now need to know about bonding formed in such condition and physical explanation why and how cell performance was enhanced.
This article may help you:
Shigeta, M. and Watanabe, T., 2007. Growth mechanism of silicon-based functional nanoparticles fabricated by inductively coupled thermal plasmas. Journal of Physics D: Applied Physics, 40(8), p.2407.
Dear Abdul kuddus,
welcome,
The addition of silicon nanoparticles can passivate the surface of the cupperodixe and reduce the active recombination centers in the material. Reducing the recombination centers can increase the lifetime of excess carriers and therefor enhance the solar cell photoconversion efficiency. You can verify this enhancement by measuring the lifetime time of carriers.
It may be that the dangling bonds of the silicon at the surface of the nanoparticles will be terminated by oxygen bonds.
Best wishes
Thank you so much Dr. Abdelhalim Zekry for your expedient answer and good suggestion.
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