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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 publication2019 IEEE European Space Power Conference
Publication statusAccepted/In press - 2019
Publication typeA4 Article in a conference publication
EventEuropean Space Power Conference 2019 - Palais des Congres d'Antibes, Juan-Les-Pins, France
Duration: 30 Sep 20194 Oct 2019


ConferenceEuropean Space Power Conference 2019
Abbreviated titleESPC2019
Internet address


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 1×1015 e-/cm2.


  • Solar Cell, Semiconducting III-V Materials

Publication forum classification

Field of science, Statistics Finland