Enhancement of EQE for MBE grown InAs/GaAs Quantum Dot Solar Cell with Back Reflector

Timo Aho, Antti Tukiainen, Sanna Ranta, Farid Elsehrawy, Marianna Raappana, Riku Isoaho, Arto Aho, Federica Cappelluti, Mircea Guina

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

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We report on molecular beam epitaxy grown InAs/GaAs quantum dot solar cells incorporating thin-film configuration with back surface reflectors. External quantum efficiency measurements reveal two times higher current generation for the quantum dots with the thin-film solar cell with the back reflector compared to a standard reference solar cell without back reflector. A high open-circuit voltage of 0.884 V is demonstrated. Furthermore, the benefits of using more advanced designs for a back reflector employing pyramidal diffraction gratings are discussed.
Original languageEnglish
Title of host publication2019 IEEE 46th Photovoltaic Specialists Conference (PVSC)
Number of pages4
ISBN (Electronic)978-1-7281-0494-2
Publication statusPublished - 2020
Publication typeA4 Article in conference proceedings
EventIEEE Photovoltaic Specialists Conference -
Duration: 1 Jan 1900 → …

Publication series

NameConference record of the IEEE Photovoltaic Specialists Conference
ISSN (Print)0160-8371


ConferenceIEEE Photovoltaic Specialists Conference
Period1/01/00 → …


  • Solar Cell
  • Semiconducting III-V Materials

Publication forum classification

  • Publication forum level 1

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science (miscellaneous)


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