Question

* Discuss concept of recombination time and other quantum properties which relate to the performance of the PN junction in a photovoltaic cell.

* Discuss the impact of direct vs indirect bandgap for optical emission/absorption for CIGS cell. For a given bandgap of the material, what is the expected absorption wavelength of the p and n type material, respectively

* Please explain how to harness efficient solar cells using quantum mechanics.

Make points, and give brief descriptions.
Give at least one or two examples using CIGS pv cell.
Thank you.  

Answer 1