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Strain-free ring-shaped nanostructures by droplet epitaxy for photovoltaic application.
- Source :
- Applied Physics Letters; 7/23/2012, Vol. 101 Issue 4, p043904-043904-4, 1p, 3 Graphs
- Publication Year :
- 2012
-
Abstract
- Droplet epitaxy is a flexible nanomaterial growth technique and is a potential method to fabricate advanced electronic and optoelectronic devices. Here, we report strain-free GaAs/Al0.33Ga0.67As quantum ring solar cells fabricated by droplet epitaxy technique. Photoluminescence is used to study the electronic structure of the lattice-matched GaAs/Al0.33Ga0.67As quantum ring solar cells. Post-growth thermal annealing is used to improve the optical quality of the solar cell as well as device efficiency. A power conversion efficiency of 1.8% is demonstrated from a prototype quantum ring solar cell. This work opens new opportunities for quantum dot solar cells with strain-free nanostructures. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 101
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 78141281
- Full Text :
- https://doi.org/10.1063/1.4738996