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Abu Syed Mahajumi, PhD

Assistant Professor

Faculty

كلية الهندسة
Biulding 3, Room C 2/20, Department of Electrical Engineering College of Engineering, King Saud University P.O. Box 800, Riyadh 11421, Saudi Arabia. E-mail: amahajumi@ksu.edu.sa

Type II GaSb/GaAs quantum dot/ring stacks with extended photoresponse for efficient solar cells

Anthony, Carrington, Peter ; Mahajumi, Abu Syed ; Wagener, Magnus C. ; Botha, Johannes Reinhardt ; Zhuang, Qiandong ; Krier, . 2011

(Quantum Dots) (Quatum Rings) (Solar Cells)

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.

Publication Work Type
PhD
Volume Number
407
Issue Number
10
Pages
1493–1496
more of publication
publications

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.

by Carrington, Peter ; Mahajumi, Abu Syed ; Wagener, Magnus C. ; Botha, Johannes Reinhardt ; Zhuang, Qiandong ; Krier, Anthony
2011
publications

The effects of rapid thermal annealing on the photoluminescence emission obtained from ten-layer stacks of GaSb/GaAs type-II single monolayer quantum dots and Stranski–Krastanow grown quantum…

by A. Mahajumi, P.J. Carrington, I. Kostakis, Q. Zhuang, and A. Krier
2013