مجله فصل مشترک ها، لایه های نازک و سیستم های با بعد کم
تأثیر فشار هیدرواستاتیک بر میزان بازترکیبی اوگر در دیود لیزر با چاه کوانتم چند گانه InGaN/GaN
نوع مقاله : مقاله پژوهشی
نویسندگان
گروه فیزیک، دانشگاه آزاد اسلامی واحد خوی، خوی، ایران
چکیده
در این مطالعه، یک مدل عددی برای تجزیه و تحلیل میزان بازترکیبی اوگر در دیود های لیزری با چاه کوانتم چند گانه C-plane InGaN/GaN تحت فشار هیدرواستاتیک استفاده شده است . برای به دست آوردن مقادیر ویژه انرژی و توابع ویژه مربوط به دیود های لیزری از تکنیک‌های دیفرانسیل محدود استفاده شد و حالت‌های ویژه حفره ها با استفاده از روش6×6 k.p تحت فشار هیدرواستاتیک اعمال شده محاسبه شد ه است . مشخص شد که تغییر فشار تا 10 گیگا پاسکال، چگالی حامل را به ترتیب تا 0.75×10^19 cm-3 و 0.56×10^19cm-3 برای حفره‌ها و الکترون‌ها و شکاف باند مؤثر را افزایش می‌دهد. بر اساس نتیجه، می‌تواند انرژی بستگی اکسایتون را کاهش دهد، نرخ میدان الکتریکی را تا 0.77MV/cm و نرخ نوترکیبی اوگر را به میزان cm^3s^-1 27^10×0.6 ترتیب در نواحی چاه‌های کوانتومی چندگانه کاهش دهد. همچنین محاسبات نشان داد که سرعت نوترکیبی اوگر حفره-حفره-الکترون (CHHS) و الکترون-الکترون-حفره (CCCH) بیشترین سهم را در نرخ نوترکیبی اوگر داشته است. مطالعات ما بینش دقیق تری را در مورد منشاء افت میزان بازترکیبی اوگر تحت فشار هیدرواستاتیک در دیود های لیزری مبتنی بر InGaN ارائه می کند.
کلیدواژه‌ها
موضوعات
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