Copper indium gallium selenide sulfide (CIGS) contains the rare element indium, while cadmium telluride (CdTe) contains the rare element tellurium. Hence, both technologies will not be discussed here.
However, there is an upcoming technology CZTS (copper zinc tin sulfide) to replace the CIGS absorber layer.
An important point to note is the 2 types of solar cell configurations: superstrate and substrate. A superstrate configuration is such that the processed substrate of the solar cell is also the front window where light enters from. A substrate configuration is such that the processed substrate of the solar cell is also the back contact, or that the back contact is deposited on the substrate. For a-Si, a p-i-n junction is a superstrate configuration, while a n-i-p junction is a substrate configuration.
Reference:
5.3 CIGS PV Technology, Delft University of Technology, https://www.youtube.com/watch?v=sX_HB4-a0Tg
5.4 CdTe PV Technology, Delft University of Technology, https://www.youtube.com/watch?v=v58VSHoxZhQ
No comments:
Post a Comment