اثر همزمان پخش بینابینی و دما روی خواص الکترونیک نوری چاه کوانتومی In(1-x)Ga(x)As/InAs/In(1-y)Al(y)As

مجرد قره باغ, لیلا; عزیز آغچه قلعه, ویکن

doi:10.22055/jrmbs.2022.17412

اثر همزمان پخش بینابینی و دما روی خواص الکترونیک نوری چاه کوانتومی In(1-x)Ga(x)As/InAs/In(1-y)Al(y)As

نوع مقاله : مقاله پژوهشی کامل

نویسندگان

¹ گروه فیزیک ، دانشکده علوم پایه ، دانشگاه صنعتی ارومیه، ارومیه ، ایران

² گروه فیزیک، دانشکده علوم پایه ، دانشگاه صنعتی ارومیه ، ارومیه ، ایران

10.22055/jrmbs.2022.17412

چکیده

تأثیر پخش بینابینی اتم های آلومینیوم ،گالیوم وایندیوم روی نمای پتانسیل، وابستگی دانسیته احتمال حالت زمینه الکترون از مختصه (محور راستای رشد است)و نیز روی ترازهای انرژی الکترون در چاه کوانتومی
برای مقادیر کوچک طول پخش درچارچوب نظریه اختلال مرتبه اول مورد بررسی قرار گرفته است . نشان داده شده است که پخش بینابینی باعث پخش شدن و نامتقارن شدن نمای پتانسیل و افزایش درجه جایگزیدگی دانسیته احتمال می گردد و ترازهای انرژی الکترون در چاه پتانسیل بالا می آیند. همچنین اثر همزمان پخش بینابینی و دما روی پتانسیل شیمیایی وضریب جذب داخل نواری در ساختار مذکور مطالعه شده است. نشان داده شده است که پتانسیل شیمیایی برای یک مقدارمعین طول پخش با افزایش دما کاهش می‌یابد و برای یک مقدار معین دما با افزایش طول پخش افزایش می‌یابد . همچنین نشان داده شده است که افزایش طول پخش منجر به کاهش قابل توجه ضریب جذب داخل نواری و جابجایی به سمت آبی طیف آن می گردد.

کلیدواژه‌ها

موضوعات

فیزیک اطلاعات کوانتومی

عنوان مقاله [English]

Effects of Interdiffusion and Temperature on Optoelectronic Properties of In(1-x)Ga(x)As/InAs/In(1-y)Al(y)As Quantum Well

نویسندگان [English]

leila mojaradgharabagh ¹
vigen aziz aghchegala ²

¹ Department of Physics, Urmia University of Technology,Urmia, , Iran

² Department of Physics, Faculty of ScienceUrmia University of Technology,Urmia , Iran

چکیده [English]

The effect of interdiffusion of , and atoms on potential profile, energy levels and ground state probability density of electron in quantum well is investigatend for small values of diffusion length in the framework of first order perturbation theory. It is shown that interdiffusion leads to an asymmetric profile for the potential and to the rise up of energy levels and to the increase of localization degree of the probabilitily density with a small shift across the growth axis. The spontaneous effects of interdiffusion and temperature on chemical potential energy and the intersubband absorption coefficient is investigated in the mentioned structure as well. It is shown that for a given value of diffusion length, the chemical potential decreases with the increase of temperature, and also for a given value of temperature the chemical potential increases with the increase of diffusion length. It is also shown that the increase of diffusion length leads to a considerable decrease in intersubband absorption coefficient and to the blue shift of its spectrum.

کلیدواژه‌ها [English]

Quantum Well
Interdiffusion
temperature
chemical potansiol
intersubband absorption coeficient

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