๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Effect of excitons on the absorption in the solar-cell with AlGaAs/GaAs superlattice grown by molecular beam epitaxy

โœ Scribed by A. Kawaharazuka; K. Onomitsu; J. Nishinaga; Y. Horikoshi

Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
296 KB
Volume
323
Category
Article
ISSN
0022-0248

No coin nor oath required. For personal study only.

โœฆ Synopsis

We investigate the effect of excitons on the photo-absorption in the solar-cell with AlGaAs/GaAs superlattice active layer. Absorption spectrum measured at room temperature is analyzed by using numerical simulation. Experimentally obtained spectrum is well explained by the simulation taking the excitonic effect into account. The photo-absorption is enhanced by excitons especially near the absorption edge due to the discrete bound exciton states as well as unbound continuous sates. This result clearly indicates that the excitonic absorption is effective in the superlattice even at room temperature. Superlattice active layer enhances the absorption efficiency of solar-cells and very useful for device applications.

๐Ÿ“œ SIMILAR VOLUMES

Effects of growth conditions on the size
Effects of growth conditions on the size and density of self-assembled InAlAs/AlGaAs quantum dots grown on GaAs by molecular beam epitaxy
โœ X.M. Lu; Y. Izumi; M. Koyama; Y. Nakata; S. Adachi; S. Muto ๐Ÿ“‚ Article ๐Ÿ“… 2011 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 908 KB

The effects of growth conditions on the size and density of self-assembled InAlAs/AlGaAs quantum dots (QDs) grown on GaAs by molecular beam epitaxy (MBE) were studied with an emphasis on their use for single QD spectroscopy. The effects of substrate temperature and growth rate on the density and siz