کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9829544 | 1524494 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of arsenic pressure on photoluminescence and structural properties of GaInNAs/GaAs quantum wells grown by molecular beam epitaxy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We have investigated the photoluminescence and structural properties of GaInNAs/GaAs quantum wells grown by molecular beam epitaxy under different arsenic pressures with all the other fluxes kept constant. The best optical properties are achieved when the V/III beam equivalent pressure ratio (V/IIIBEP) is equal to 10. The emission wavelength remains unchanged for the V/IIIBEP ratios between 8 and 12, suggesting that within this range neither the alloy composition nor the nitrogen sticking coefficient is changed. For V/IIIBEP<8, incorporation of nitrogen into the crystal is enhanced and for V/IIIBEP>12 incorporation is reduced. Post-growth thermal annealing induces a spectral blue-shift, which decreases as the V/IIIBEP ratio is increased above 12. This phenomenon is likely due to combined effects of Ga/In interdiffusion and a change in the nearest neighbourhood of nitrogen.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 281, Issues 2â4, 1 August 2005, Pages 249-254
Journal: Journal of Crystal Growth - Volume 281, Issues 2â4, 1 August 2005, Pages 249-254
نویسندگان
E.-M. Pavelescu, T. Hakkarainen, V.D.S. Dhaka, N.V. Tkachenko, T. Jouhti, H. Lemmetyinen, M. Pessa,