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Back Reflector with Diffractive Gratings for Light-Trapping in Thin-Film III-V Solar Cells

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


Original languageEnglish
Title of host publication 2019 European Space Power Conference (ESPC)
Number of pages4
ISBN (Electronic)978-1-7281-2126-0
ISBN (Print)978-1-7281-2127-7
Publication statusPublished - 2019
Publication typeA4 Article in a conference publication
EventEuropean Space Power Conference -
Duration: 1 Jan 2000 → …


ConferenceEuropean Space Power Conference
Period1/01/00 → …


We report on the development of light-trapping architectures applied to thin-film solar cells. In particular, we focus on enhancing the absorption at 1-eV spectral range for dilute nitride and quantum dot materials and report on the influence of planar back reflectors on the photovoltaic properties. Moreover, we discuss the properties of polymer diffraction gratings with enhanced light-trapping capability pointing to advantageous properties of pyramidal gratings. In order to understand the suitability of these polymer grating architectures for space applications, we have performed an electron irradiation study (1 MeV) revealing the absence of reflectance changes up to doses of 1×10 15 e-/cm 2 .


  • Solar Cell, Semiconducting III-V Materials

Publication forum classification

Field of science, Statistics Finland