کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7991660 | 1516143 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced performance of ultraviolet photodetector modified by quantum dots with high responsivity and narrow detection region
ترجمه فارسی عنوان
عملکرد پیشرفته از فوتو تتراپی ماوراء بنفش اصلاح شده توسط نقطه های کوانتومی با حساسیت بالا و منطقه تشخیص محدود است
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کلمات کلیدی
فوتو تترا نقاط کوانتومی، پاسخگویی بالا، منطقه تشخیص باریک،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
چکیده انگلیسی
A high performance photovoltaic ultraviolet photodetector (UVPD) based on Polyvinyl carbazole (PVK)/TiO2 heterojunction with CuInS2/ZnS quantum dots (CIS-Z QDs) doped in PVK layer was fabricated in a simple method with great exhibition of high responsivity (R) and fast response. When the device is in dark, the depleted p-n heterojunction structure will lead to a low dark current density with the value of 0.05â¯Î¼A/cm2. Because of the different absorbance that the materials have, the detector has a narrow detection wavelength region from 310â¯nm to 350â¯nm. Meanwhile, due to the quantum size effect that CIS-Z QDs have, the electric-field intensity of the depletion is enhanced. Besides, the conductivity of the device has also been improved by CIS-Z QDs. Therefore, the photo-generated carrier will be effectively separated and lead to a high R and fast response with the value of 0.19 A/W and 24â¯mâ¯s. The research suggests that after doping CIS-Z QDs, organic/inorganic p-n hybrid heterojunction UVPDs possess the potential to enhance photo detection performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 751, 30 June 2018, Pages 117-123
Journal: Journal of Alloys and Compounds - Volume 751, 30 June 2018, Pages 117-123
نویسندگان
Ruiliang Xu, Shengping Ruan, Dezhong Zhang, Zhiqi Li, Bo Yin, Kanzhe Li, Jingran Zhou, Yu Chen, Chuannan Li,