InAs quantum dots for photovoltaic cell application
Abstract
A baseline for the third generation photovoltaic technology at the National Institute of Physics was implemented at the Condensed Matter Physics Laboratory with the incorporation of quantum dots (QDs) nanostructure. Optimized growth parameters and QD evolution was determined by taking PL measurements of three QD samples grown at different Indium flux exposure. Presence of QDs inside the final layer for the device was confirmed by taking its photocurrent spectra and AFM image. Performance of the fabricated PV cell with incorporated QDs has shown an increase in quantum efficiencies in reference to the bulk heterostructure counterpart. Forward bias sweep without irradiance showed a higher dark current of p-i-n with dots as compared to the reference cell.