A Vertical Structured Solar-blind Ultraviolet Photodetector Based on Carbon Dots/Graphene

被引：0

作者：

Zhang, Keyang ^{[1
]}

Song, Chifeng ^{[1
]}

Chen, Taihao ^{[1
]}

Gao, Yifan ^{[1
]}

Han, Zikang ^{[1
]}

Zhao, Zhiwei ^{[1
]}

机构：

[1] Southeast Univ, Sch Elect Sci & Engn, Nanjing, Peoples R China

来源：

2022 5TH INTERNATIONAL CONFERENCE ON ELECTRONICS AND ELECTRICAL ENGINEERING TECHNOLOGY, EEET | 2022年

关键词：

solar-blind ultraviolet; vertical structure; carbon dots; graphene; photodetector; QUANTUM DOTS;

D O I：

10.1109/EEET58130.2022.00049

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Compared with infrared, solar-blind ultraviolet (UV) has the advantage of extremely low background noise, which is prospective in the field of photodetection. A vertical structure has attracted our attention due to the short channel length and the high carrier mobility. Meanwhile, carbon quantum dots (CDs) are a promising photosensitive layer material, while graphene shows excellent photoelectric properties after binding to CDs. This paper builds a vertical structured solar-blind UV PD, with graphene used as the transparent electrode, CDs film used as the photosensitive layer, and aluminum film used as the source and drain contacts. The device exhibits responsivity of 375.5 mA/W, normalized detectivity of 9.36x10(8) Jones and on/off ratio of 11.2 at -5V drain-source bias voltage and 0V gate voltage under the illumination of 1.5mW/cm2 by 254 nm wavelength. The results show that our PD has excellent photoelectric performance.

引用

页码：244 / 248

页数：5

共 12 条

[1]

Ditshego N. M. J, INT J ELECT ELECT EN, V11, P162

[2] Oxygen-Assisted Charge Transfer Between ZnO Quantum Dots and Graphene [J].

Guo, Wenhao ;

Xu, Shuigang ;

Wu, Zefei ;

Wang, Ning ;

Loy, M. M. T. ;

Du, Shengwang .

SMALL, 2013, 9 (18) :3031-3036

[3] Enhanced optical properties of ZnS-rGO nanocomposites for ultraviolet detection applications [J].

Hajimazdarani, Mahdi ;

Naderi, Nima ;

Yarmand, Benyamin ;

Kolahi, Alireza ;

Sangpour, Parvaneh .

CERAMICS INTERNATIONAL, 2018, 44 (15) :17878-17884

[4] Graphitic Nitrogen Triggers Red Fluorescence in Carbon Dots [J].

Hola, Katerina ;

Sudolska, Maria ;

Kalytchuk, Sergii ;

Nachtigallova, Dana ;

Rogach, Andrey L. ;

Otyepka, Michal ;

Zboril, Radek .

ACS NANO, 2017, 11 (12) :12402-12410

[5] High Responsivity MgZnO Ultraviolet Thin-Film Phototransistor Developed Using Radio Frequency Sputtering [J].

Li, Jyun-Yi ;

Chang, Sheng-Po ;

Hsu, Ming-Hung ;

Chang, Shoou-Jinn .

MATERIALS, 2017, 10 (02)

[6] High-performance solar-blind flexible deep-UV photodetectors based on quantum dots synthesized by femtosecond-laser ablation [J].

Mitra, Somak ;

Aravindh, Assa ;

Das, Gobind ;

Pak, Yusin ;

Ajia, Idris ;

Loganathan, Kalaivanan ;

Di Fabrizio, Enzo ;

Roqan, Iman S. .

NANO ENERGY, 2018, 48 :551-559

[7] Low-Dimensional Nanostructure Ultraviolet Photodetectors [J].

Peng, Lin ;

Hu, Linfeng ;

Fang, Xiaosheng .

ADVANCED MATERIALS, 2013, 25 (37) :5321-5328

[8] Deep Ultraviolet Photoluminescence of Water-Soluble Self-Passivated Graphene Quantum Dots [J].

Tang, Libin ;

Ji, Rongbin ;

Cao, Xiangke ;

Lin, Jingyu ;

Jiang, Hongxing ;

Li, Xueming ;

Teng, Kar Seng ;

Luk, Chi Man ;

Zeng, Songjun ;

Hao, Jianhua ;

Lau, Shu Ping .

ACS NANO, 2012, 6 (06) :5102-5110

[9] Successful entrapment of carbon dots within flexible free-standing transparent mesoporous organic-inorganic silica hybrid films for photonic applications [J].

Vassilakopoulou, Anastasia ;

Georgakilas, Vasilios ;

Vainos, Nikolaos ;

Koutselas, Ioannis .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2017, 103 :190-196

[10] Demonstration of solar-blind AlxGa1-xN-based heterojunction phototransistors [J].

Zhang, Lingxia ;

Tang, Shaoji ;

Liu, Changshan ;

Li, Bin ;

Wu, Hualong ;

Wang, Hailong ;

Wu, Zhisheng ;

Jiang, Hao .

APPLIED PHYSICS LETTERS, 2015, 107 (23)

← 1 2 →