Abstract
We discuss the photovoltaic characteristics of ultra-thin GaAs solar cells as simulated using the standard semi-classical drift-diffusion-Poisson model and an advanced microscopic quantum-kinetic approach based on the nonequilibrium Green's function formalism. In the case where the semi-classical model relies on the conventional assumption of flat-band bulk absorption coefficients, substantial qualitative and quantitative discrepancies are found. The agreement between classical and quantum kinetic approaches is improved by consideration of field-dependent absorption and emission coefficients in the semi-classical approach, which underlines the strong impact of the large built-in potential gradients on absorption and emission in ultra-thin solar cell architectures. In addition, our findings concerning the effects of non-classical regions induced by blocking layers at carrier selective contacts are briefly summarized.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
