Molecular Beam Epitaxy of Cu2O Heterostructures for Photovoltaics

Yulia Tolstova, Samantha S. Wilson, Stefan T. Omelchenko, Nathan S Lewis, Harry A. Atwater

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Cu2O is a p-type semiconductor that has demonstrated attractive photovoltaic properties, but its efficiencies have been limited by surface instability and lack of high quality thin films. In this work, plasma-assisted molecular beam epitaxy is used to precisely control film orientation and interface chemistry of Cu2O heterostructures. Thin films of Cu2O are deposited by MBE onto thin films of Pt and Au sputtered on MgO single crystal substrates. This heterostructure configuration provides a path for an all-epitaxial thin film Cu2O solar cell, which can serve as a top cell in a tandem structure with a crystalline Si bottom cell.

Original languageEnglish
Title of host publication2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479979448
Publication statusPublished - Dec 14 2015
Event42nd IEEE Photovoltaic Specialist Conference, PVSC 2015 - New Orleans, United States
Duration: Jun 14 2015Jun 19 2015


Other42nd IEEE Photovoltaic Specialist Conference, PVSC 2015
CountryUnited States
CityNew Orleans


  • Cuprous oxide
  • heteroepitaxy
  • molecular beam epitaxy
  • photovoltaic

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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