کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7938861 | 1513185 | 2018 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fabrication of a high sensitivity and fast response self-powered photosensor based on a core-shell silicon nanowire homojunction
ترجمه فارسی عنوان
ساخت یک حسگر حساسیت و حساسیت سریع عکسبرداری از خود ساخته شده بر اساس یک همجوشی نانوسیم سیلیکونی با هسته پوسته
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
Core-shell self-powered SiNWs homojunction photosensors have been fabricated. SiNWs are prepared by a metal assisted chemical etching method using different HF/H2O2 ratios and etching times. The length of the p-SiNWs increased as the H2O2 concentration and etching time increased. All the grown SiNWs show very low (â¼0.7%) optical reflectance for the wavelength range of 200-1100â¯nm. Photoluminescence spectra of all prepared SiNWs show sharp and broad emission bands located in the red region of the light spectrum. Core-shell homojunction photosensors were fabricated by spin coating P2O2 onto the surface of the prepared p-SiNWs and annealed at 900â¯Â°C for 1â¯h. The fabricated devices exhibited photovoltaic behavior and high photosensitivity with fast response speed to the visible light. However, the sample that was fabricated using HF/H2O2 ratio of 1:1 showed the highest photosensitivity value of 3578% while the photosensor prepared using 2:1 ratio of HF/H2O2 gave the faster rise and decay time.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Superlattices and Microstructures - Volume 116, April 2018, Pages 27-35
Journal: Superlattices and Microstructures - Volume 116, April 2018, Pages 27-35
نویسندگان
Assel A. Abdul-Hameed, M.A. Mahdi, Basil Ali, Abbas M. Selman, H.F. Al-Taay, P. Jennings, Wen-Jen Lee,