The optical properties of GaSb strongly depend on the defect types and concentration. Doping is an effective method to improve the optical properties by changing the native defect types and concentration. In this paper, the native defects related emissions were suppressed through defects compensation via Be-doping. The un-doped and Be-doped GaSb were fabricated by molecular beam epitaxy. Temperature- and excitation power-dependent photoluminescence were applied to investigate optical properties of GaSb epilayer. The Ga vacancy related emission disappeared after Be doping. This phenomenon can be explained by the defect compensation between Be atoms and Ga vacancy, which greatly reduced the concentration of native defects. To certify this theory, Te-doped GaSb was prepared. For Te-doped GaSb, TeSb recombined with native defects and formed new complex defects, which enhanced the defects related emission peak. The investigation of optical properties of doped GaSb epilayer was great significant for practical application of GaSb-based devices.
Journal of Luminescence – Elsevier
Published: May 1, 2018
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.
All for just $49/month
Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.
Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.
It’s easy to organize your research with our built-in tools.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera