کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7133188 | 1461821 | 2018 | 36 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photoelectrochemical ultraviolet photodetector by anodic titanium dioxide nanotube layers
ترجمه فارسی عنوان
فتوای فوتوالکترو شیمیایی ماوراء بنفش با لایه نانولوله دی اکسید تیتانیوم آنودایز
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
A prototype ultraviolet (UV) photodetector based on photoelectrochemical (PEC) cell from material synthesis up to assembly was demonstrated in this work. Self-organized titanium dioxide (TiO2) nanotube layers (1 and 5â¯Î¼m thicknesses) prepared by electrochemical anodization were applied as the sensing layer in the photodetector. A printed circuit board (PCB) platform with physical size of 2â¯cmâ¯Ãâ¯2â¯cm was designed to mount the sensing layer. The photodetector system comprised of a sandwich structure can be described as glass/ITO/electrolyte/TiO2 nanotube layer/Ti/PCB platform. For this system, a low applied voltage of 0.5-1â¯V was required to drive the photodetector. TiO2 nanotube layers have shown positive photoresponse in the entire UV spectral region (λâ¯=â¯250-400â¯nm, classified as UV-A, B and C). In particular, the highest response with >850 sensitivity, and responsivity of â740â¯mA/W had been achieved by the 5â¯Î¼m TiO2 nanotube layer for detection in the UV-A region, and the respective rise and decay time were 0.88 and 1.28â¯s. This work shows that the sandwich structure PEC cell UV photodetector with TiO2 nanotube layer as sensing layer is stable, highly sensitive and provides rapid response. Such platform can be potentially applied for other sensing materials as an efficient photodetector.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators A: Physical - Volume 279, 15 August 2018, Pages 263-271
Journal: Sensors and Actuators A: Physical - Volume 279, 15 August 2018, Pages 263-271
نویسندگان
Siowwoon Ng, Fong Kwong Yam, Siti Nurfarhana Sohimee, Khi Poay Beh, Sau Siong Tneh, Yuit Ling Cheong, Zainuriah Hassan,