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).

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

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

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.

scholarly journals High performance self-powered photodetector based on 1D Te-2D WS2 mixed-dimensional heterostructure

2021 ◽  
Author(s):  
Lixiang Han ◽  
Mengmeng Yang ◽  
Peiting Wen ◽  
Wei Gao ◽  
nengjie huo ◽  
...  
Keyword(s):  
High Performance ◽  
Van Der Waals ◽  
Sharp Interface ◽  
Two Dimensional ◽  
High Quality ◽  
One Dimensional ◽  
Self Powered

One dimensional (1D)-two dimensional (2D) van der Waals (vdWs) mixed-dimensional heterostructures with advantages of atomically sharp interface, high quality and good compatibility have attracted tremendous attention in recent years. The...

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