From nanofibers to ordered ZnO/NiO heterojunction arrays for self-powered and transparent UV photodetectors

2019 ◽  
Vol 7 (2) ◽  
pp. 223-229 ◽  
Author(s):  
Zhiming Zhang ◽  
Yi Ning ◽  
Xiaosheng Fang
Keyword(s):  
High Performance ◽  
Uv Photodetectors ◽  
Self Powered ◽  
Ultraviolet Photodetectors

Ordered ZnO/NiO heterojunction arrays prepared via electrospinning using three-assisted-electrodes were achieved for high-performance self-powered ultraviolet photodetectors.

High performance self-powered CuZnS/GaN UV photodetectors with ultrahigh on/off ratio (3 × 108)

2021 ◽  
Vol 9 (14) ◽  
pp. 4799-4807
Author(s):  
Yong Zhang ◽  
Weidong Song
Keyword(s):  
Chemical Bath Deposition ◽  
High Performance ◽  
Response Speed ◽  
Fast Response ◽  
Uv Photodetector ◽  
Uv Photodetectors ◽  
Simple Chemical ◽  
Self Powered

P-CuZnS/n-GaN UV photodetector is prepared by a simple chemical bath deposition, showing excellent self-powered properties, including ultrahigh on/off ratio (3 × 108), fast response speed (0.14/40 ms) and large detectivity of 3 × 1013 Jones.

Surface photo-charge effect in doped-ZnO nanorods for high-performance self-powered ultraviolet photodetectors

Nanoscale ◽  
2017 ◽  
Vol 9 (13) ◽  
pp. 4536-4543 ◽  
Author(s):  
Buddha Deka Boruah ◽  
Shanmukh Naidu Majji ◽  
Abha Misra
Keyword(s):  
High Performance ◽  
Zno Nanorods ◽  
Charge Effect ◽  
Doped Zno ◽  
Self Powered ◽  
Ultraviolet Photodetectors

Self-powered High-performance Flexible GaN/ZnO Heterostructure UV Photodetectors with Piezo-phototronic Effect Enhanced Photoresponse

Nano Energy ◽  
2022 ◽  
pp. 106945
Author(s):  
Yiyao Peng ◽  
Junfeng Lu ◽  
Xiandi Wang ◽  
Wenda Ma ◽  
Miaoling Que ◽  
...  
Keyword(s):  
High Performance ◽  
Uv Photodetectors ◽  
Self Powered

scholarly journals Fabrication of GaN nano-towers based self-powered UV photodetector

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Lalit Goswami ◽  
Neha Aggarwal ◽  
Pargam Vashishtha ◽  
Shubhendra Kumar Jain ◽  
Shruti Nirantar ◽  
...  
Keyword(s):  
High Performance ◽  
Volume Ratio ◽  
Fast Time ◽  
Trap States ◽  
Barrier Heights ◽  
Photocurrent Generation ◽  
Lower Strain ◽  
Self Powered ◽  
Aln Buffer ◽  
Ultraviolet Photodetectors

AbstractThe fabrication of unique taper-ended GaN-Nanotowers structure based highly efficient ultraviolet photodetector is demonstrated. Hexagonally stacked, single crystalline GaN nanocolumnar structure (nanotowers) grown on AlN buffer layer exhibits higher photocurrent generation due to high quality nanotowers morphology and increased surface/volume ratio which significantly enhances its responsivity upon ultraviolet exposure leading to outstanding performance from the developed detection device. The fabricated detector display low dark current (~ 12 nA), high ILight/IDark ratio (> 104), fast time-correlated transient response (~ 433 µs) upon ultraviolet (325 nm) illumination. A high photoresponsivity of 2.47 A/W is achieved in self-powered mode of operation. The reason behind such high performance could be attributed to built-in electric field developed from a difference in Schottky barrier heights will be discussed in detail. While in photoconductive mode, the responsivity is observed to be 35.4 A/W @ − 3 V along with very high external quantum efficiency (~ 104%), lower noise equivalent power (~ 10–13 WHz−1/2) and excellent UV–Vis selectivity. Nanotower structure with lower strain and dislocations as well as reduced trap states cumulatively contributed to augmented performance from the device. The utilization of these GaN-Nanotower structures can potentially be useful towards the fabrication of energy-efficient ultraviolet photodetectors.

High performance self-powered ultraviolet photodetectors based on electrospun gallium nitride nanowires

2018 ◽  
Vol 452 ◽  
pp. 43-48 ◽  
Author(s):  
Mingxiang Zhang ◽  
Ying Liu ◽  
Mengqi Yang ◽  
Wen Zhang ◽  
Jinyuan Zhou ◽  
...  
Keyword(s):  
Gallium Nitride ◽  
High Performance ◽  
Self Powered ◽  
Ultraviolet Photodetectors

High-performance self-powered ultraviolet photodetectors based on mixed-dimensional heterostructure arrays formed from NiO nanosheets and TiO2 nanorods

2020 ◽  
Vol 8 (28) ◽  
pp. 9646-9654
Author(s):  
Rui Cao ◽  
Jianping Xu ◽  
Shaobo Shi ◽  
Jing Chen ◽  
Ding Liu ◽  
...  
Keyword(s):  
High Performance ◽  
Tio2 Nanorods ◽  
Self Powered ◽  
Ultraviolet Photodetectors ◽  
Nio Nanosheets

The morphology and geometry of semiconductors will affect the photoresponse performance of mixed-dimensional heterojunction photodetectors (PDs).

Facile preparation of sulphur-doped graphene quantum dots for ultra-high performance ultraviolet photodetectors

2017 ◽  
Vol 41 (18) ◽  
pp. 10447-10451 ◽  
Author(s):  
Shuxiong Gao ◽  
Libin Tang ◽  
Jinzhong Xiang ◽  
Rongbin Ji ◽  
Sin Ki Lai ◽  
...  
Keyword(s):  
Quantum Dots ◽  
High Performance ◽  
Graphene Quantum Dots ◽  
Combustion Method ◽  
Uv Photodetectors ◽  
Doped Graphene ◽  
Facile Preparation ◽  
Ultraviolet Photodetectors

Sulphur-doped GQDs were prepared using a novel co-combustion method (T-X-J method), and ultra-high performance UV photodetectors based on S-GQDs were fabricated.

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