کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
302817 512553 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Piezoelectric photo-thermal study of GaAs single-quantum well embedded in GaAs/AlAs short-period superlattlices
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
Piezoelectric photo-thermal study of GaAs single-quantum well embedded in GaAs/AlAs short-period superlattlices
چکیده انگلیسی

The piezoelectric photo-thermal (PPT) and the surface photo-voltage (SPV) spectra of GaAs/AlAs short-period superlattices (SPS)-confined GaAs single-quantum well (SQW) were measured. The electron nonradiative transitions within GaAs-SQW and subband of SPS were observed in the room-temperature PPT spectrum. At low temperature (81 K), the PPT and SPV peaks originated from the exciton transition of e1-hh1 and e1-lh1 within GaAs-SQW were observed. These peak intensities showed the opposite behavior followed by a photo-quenching (PQ) of EL2 existing in GaAs substrate. It was found that EL2 in the substrate exerted an influence on the carrier transition mechanisms within GaAs-SQW and the electron nonradiative paths through EL2 were clearly discussed by the PPT and SPV measurements.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 33, Issue 2, February 2008, Pages 304–308
نویسندگان
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