Onno, AL;
Tang, M;
Wang, M;
Maidaniuk, Y;
Benamara, M;
Mazur, YI;
Salamo, GJ;
... Liu, H; + view all
(2018)
MBE growth of 1.7eV Al0.2Ga0.8As and 1.42eV GaAs solar cells on Si using dislocations filters: an alternative pathway toward III-V/ Si solar cells architectures.
In:
2017 IEEE 44th Photovoltaic Specialist Conference (PVSC).
IEEE
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Abstract
Metamorphic epitaxial growth of III-V solar cells on Si has attracted significant interest for the development of III V/Si photovoltaic architectures. In this work, we present an alternative pathway – using MBE growth techniques – based on the direct nucleation of Al_{x}Ga_{1-x}As materials on Si, followed by the growth of a 1.7eV Al_{0.2}Ga_{0.8}As or a 1.42eV GaAs solar cell. Dislocation Filter Layers (DFLs), in conjunction with Thermal Cycle Annealing (TCA), have been used to reduce the Threading Dislocation Density (TDD) below 10^{7}cm^{-2} in the base of the cell; close to the best results demonstrated with metamorphic buffers.
| Type: | Proceedings paper |
|---|---|
| Title: | MBE growth of 1.7eV Al0.2Ga0.8As and 1.42eV GaAs solar cells on Si using dislocations filters: an alternative pathway toward III-V/ Si solar cells architectures |
| Event: | IEEE 44th Photovoltaic Specialist Conference (PVSC), 25-30 June 2017, Washington, DC, USA |
| Location: | Washington D.C., USA |
| Dates: | 25 June 2017 - 30 June 2017 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/PVSC.2017.8521558 |
| Publisher version: | https://doi.org/10.1109/PVSC.2017.8521558 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | III-V on Silicon, Molecular Beam Epitaxy, Threading dislocation density, Photovoltaic solar cells |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10034034 |
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