Optical Performance of Ag-based Back Reflectors with different Spacers in Thin Film Si Solar Cells

L.V. Mercaldo, I. Usatii, E. Bobeico, F. Russo, L. Lancellotti, P. Delli Veneri

Research output: Contribution to conferencePaper

4 Citations (Scopus)

Abstract

We have compared different Ag-based back reflectors (BRs) applied to superstrate-type microcrystalline Si devices grown on Asahi U glass. In particular, substitution of the conventional ZnO:Al layer by MgF2, with lower refractive index and no free-carrier absorption, has been investigated. As electrical issues can mask the optical performance of the BR when evaluated by EQE measurements, a purely optical method that compares the intensity of Raman spectra generated with long wavelength excitation light has been applied. Based on this investigation, MgF2/Ag is potentially superior to ZnO:Al/Ag, even when MgF2 is used in the form of ultrathin layer (few nm, likely island-like). Nevertheless, the novel dual-function n-SiOx/Ag BR outperforms all the other BRs.
Original languageEnglish
DOIs
Publication statusPublished - 2015
EventE-MRS Spring Meeting 2015 Symposium C - Advanced inorganic materials and structures for photovoltaics, 2015 - Lille, France
Duration: 1 Jan 2015 → …

Conference

ConferenceE-MRS Spring Meeting 2015 Symposium C - Advanced inorganic materials and structures for photovoltaics, 2015
CountryFrance
CityLille
Period1/1/15 → …

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All Science Journal Classification (ASJC) codes

  • Energy(all)

Cite this

Mercaldo, L. V., Usatii, I., Bobeico, E., Russo, F., Lancellotti, L., & Veneri, P. D. (2015). Optical Performance of Ag-based Back Reflectors with different Spacers in Thin Film Si Solar Cells. Paper presented at E-MRS Spring Meeting 2015 Symposium C - Advanced inorganic materials and structures for photovoltaics, 2015, Lille, France. https://doi.org/10.1016/j.egypro.2015.12.317