کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7940450 | 1513192 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Performance improvement of AlGaN-based deep-ultraviolet light-emitting diodes via Si-doping design of quantum barriers
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Performance improvement of AlGaN-based deep-ultraviolet light-emitting diodes via Si-doping design of quantum barriers Performance improvement of AlGaN-based deep-ultraviolet light-emitting diodes via Si-doping design of quantum barriers](/preview/png/7940450.png)
چکیده انگلیسی
Characteristics of AlGaN-based deep-ultraviolet (DUV) light-emitting diodes (LEDs) with light-emitting wavelength around 265Â nm by adopting different Si-doping design of the last quantum barrier (LQB) have been investigated. Simulation approach yields a result that, the light output power (LOP) and internal quantum efficiency (IQE) of sample with the completely undoped LQB are both improved compared to cases of fully doping and step-doping of the LQB structures. The key factors for the performance improvement are decrease of average electric field strength within the last quantum well layer and increase of the effective barrier height for electrons, and thereby reducing the leakage of electrons and then improving the radiative recombination rates, which suggests that keeping the LQB undoped is of great potential for design and application of high-efficiency AlGaN-based DUV LEDs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Superlattices and Microstructures - Volume 109, September 2017, Pages 687-692
Journal: Superlattices and Microstructures - Volume 109, September 2017, Pages 687-692
نویسندگان
Lin Lu, Zhi Wan, FuJun Xu, XinQiang Wang, Chen Lv, Ming Jiang, QiGong Chen,