کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1555235 1513257 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
New developments for nitride unipolar devices at 1.3–1.5  μm wavelengths
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
New developments for nitride unipolar devices at 1.3–1.5  μm wavelengths
چکیده انگلیسی

We present a systematic investigation of ultrathin single and coupled GaN/AlN quantum wells grown by molecular beam epitaxy for applications to unipolar devices. Narrow Lorentzian-shaped intersubband absorptions are demonstrated tunable at telecommunication wavelengths. The linewidth is as small as 40 meV which sets a new state-of-the-art. Simulation of the intersubband wavelength and comparison with measurements leads us to revise the value of the conduction band offset at the GaN/AlN interface (1.7 ± 0.05 eV). We also present the observation of strong electron state coupling between two GaN wells separated by an ultra-thin 2 monolayer thick AlN barrier. This study allows us to refine the potential description at the GaN/AlN interface at the atomic monolayer scale. Excellent agreement with measurements is achieved assuming a potential drop over 1 ML.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Superlattices and Microstructures - Volume 40, Issues 4–6, October–December 2006, Pages 412–417
نویسندگان
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