SiNx layers on nanostructured Si solar cells: Effective for optical absorption and carrier collection
Abstract
We compared nanopatterned Si solar cells with and without SiNx layers. The SiNx layer coating significantly improved the internal quantum efficiency of the nanopatterned cells at long wavelengths as well as short wavelengths, whereas the surface passivation helped carrier collection of flat cells mainly at short wavelengths. The surface nanostructured array enhanced the optical absorption and also concentrated incoming light near the surface in broad wavelength range. Resulting high density of the photo-excited carriers near the surface could lead to significant recombination loss and the SiNx layer played a crucial role in the improved carrier collection of the nanostructured solar cells. © 2015 AIP Publishing LLC.
Date Published
Journal
Applied Physics Letters
Volume
107
Issue
15
URL
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84944204270&doi=10.1063%2f1.4933202&partnerID=40&md5=996b02dfc4d0f23e1b53b9eb817b541f
DOI
10.1063/1.4933202