Carrington, Peter James and Mahajumi, Abu Syed and Wagener, Magnus C. and Botha, Johannes Reinhardt and Zhuang, Qiandong and Krier, Anthony (2012) Type II GaSb/GaAs quantum dot/ring stacks with extended photoresponse for efficient solar cells. Physica B: Condensed Matter, 407 (10). pp. 1493-1496. ISSN 0921-4526
Full text not available from this repository.Abstract
We report on the fabrication of GaAs based p-i-n solar cells containing 5 and 10 layers of type II GaSb quantum rings grown by molecular beam epitaxy. Solar cells containing quantum rings show improved efficiency at longer wavelengths into the near-IR extending up to 1500 nm and show enhanced short-circuit current under 1 sun illumination compared to a GaAs control cell. A reduction in the open-circuit voltage is observed due to the build-up of internal strain. The MBE growth, formation and photoluminescence of single and stacked layers of GaSb/GaAs quantum rings are also presented. (C) 2011 Elsevier B.V. All rights reserved.