0% Complete
صفحه اصلی
/
سی و سومین کنفرانس بین المللی مهندسی برق
Fabrication and performance analysis of a ZnO phototransistor for UV detection
نویسندگان :
Ghasem Yousefi Simakani
1
ُSamaneh Hamedi
2
1- دانشگاه صنعتی شیراز
2- دانشگاه صنعتی شیراز
کلمات کلیدی :
ZnO Phototransistor،Time response of phototransistor،Persistent photoconductivity،Phototransistor responsivity،Mobility
چکیده :
In this paper we present the fabrication and characterization of a ZnO phototransistor on a p-type silicon substrate with a few simple low-cost steps including cleaning and 2 sputtering steps on a pre-oxidized silicon. The p-type silicon served as the back gate, and the 300nm SiO₂ layer on the silicon was used as gate insulator. A ZnO layer as phototransistor channel was sputtered and finally, two 150nm aluminum electrode have been sputtered on the channel as drain and source electrodes. The transistor exhibited I-V characteristics over a gate voltage range of 0 to 28V, with a maximum drain-source voltage of 40V. We also measured the phototransistor's UV light responsivity, mobility, rise time, and fall time under UV illumination. A photoresponsivity of 33A/W was observed at an input optical power of 315µW/cm2 for a wavelength of 405nm, while the mobility ranged from 104 cm²/V·s to 630 cm²/V·s across the gate voltage range (0 to 28 V) with a drain-source voltage of 12V. A rise time of approximately 10s and a fall time of around 45s were recorded, demonstrating persistent photoconductivity (PPC) under UV exposure in the time-domain response. The results aligned with the expected behavior of ZnO-based photodetectors.
لیست مقالات
لیست مقالات بایگانی شده
Automotive radar target classification using micro-Doppler features
Amin Aghatabarroodbary - Mohammad Hassan Bastani - Fereidoon Behnia
Design of a Full Swing 20-Transistors Full Adder Cell based on CNTFET with High Speed and Low PDP
Amir Baghi Rahin - Afshin Kadivarian - Vahid Baghi Rahin
بررسی تاثیر اعمال پوشش مش متال در مقاومت حرارتی و خوردگی سیم فولادی استحکام بالا بعنوان مغزی هادی های پرظرفیت ACSS
فائزه راد - مهرنوش طاهرخانی - ناصر میرشاه ولایتی - عبداله جواهری
A New Atrial Fibrillation Detection System with Noise Cancellation and Signal Annotation
Amirali Banaei Kashani - Bardia Baraeinejad - Mohammad Fakharzadeh
A Novel PM-Assisted Linear Switched Reluctance Motor
Matin Vatani - Mojtaba Mirsalim - Javad Shokrollahi Moghani
Achieving a Wide Range of Voltage Gain in Three-Phase LLC Resonant Converter Using Hybrid Control of Variable Frequency and Variable Magnetizing Inductor
Saeed Ramezani darvish - Salar Sadeghian - Adib Abrishamifar
Transmission Dynamics and Optimal Control Strategy to Mitigate the Spread of Novel Coronavirus: The Case of Iran
Reza Shadi - Ahmad Fakharian - Hamid Khaloozadeh
Melanoma Detection Using Multi-Color LBP-FPl and Optimized VGG16
Vida Esmaeili - Mahmood Mohassel Feghhi
Optimal Scheduling of Active Distribution Networks with High Penetration of Plug-in Electric vehicles and Renewables Using Grasshopper Optimization Algorithm
Seyyed Hadi Mousavi - Varahram Janatifar - Arya Abdolahi - Mitra Sarhangzadeh
High-Performance Biosensor Based on SRR for Early Breast Cancer Detection
Hasti Enayattarighehkari - Sina Aramtan - Gholamreza Moradi - Farhad Azadi Namin
بیشتر
ثمین همایش، سامانه مدیریت کنفرانس ها و جشنواره ها - نگارش 41.7.4