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 Enhanced photoresponse of a high-performance self-powered UV photodetector based on ZnO nanorods and a novel electrolyte by the piezo-phototronic effect

RSC Advances ◽  
2018 ◽  
Vol 8 (58) ◽  
pp. 33174-33179 ◽  
Author(s):  
Xiaoli Peng ◽  
Weihao Wang ◽  
Yiyu Zeng ◽  
Xinhua Pan ◽  
Zhizhen Ye ◽  
...  
Keyword(s):  
High Performance ◽  
Tensile Strain ◽  
Compressive Strain ◽  
Zno Nanorods ◽  
Uv Detector ◽  
Uv Photodetector ◽  
Self Powered

A flexible UV detector exhibits high performance. The photoresponse of the device under different upward angles (tensile strain) and downward angles (compressive strain) were studied. A 163% change in responsivity was obtained when the downward angle reached 60°.

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

Noise Properties of Low-Temperature-Grown Co-Doped ZnO Nanorods as Ultraviolet Photodetectors

2014 ◽  
Vol 20 (6) ◽  
pp. 89-95 ◽  
Author(s):  
Chung-Wei Liu ◽  
Shoou-Jinn Chang ◽  
Chih-Hung Hsiao ◽  
Kuang-Yao Lo ◽  
Tsung-Hsien Kao ◽  
...  
Keyword(s):  
Low Temperature ◽  
Zno Nanorods ◽  
Doped Zno ◽  
Ultraviolet Photodetectors ◽  
Co Doped

Hydrothermal synthesis of Co–ZnO nanowire array and its application as piezo-driven self-powered humidity sensor with high sensitivity and repeatability

RSC Advances ◽  
2015 ◽  
Vol 5 (102) ◽  
pp. 84343-84349 ◽  
Author(s):  
Weili Zang ◽  
Pan Li ◽  
Yongming Fu ◽  
Lili Xing ◽  
Xinyu Xue
Keyword(s):  
Active Sites ◽  
High Performance ◽  
Humidity Sensor ◽  
Coupling Effect ◽  
Nanowire Array ◽  
High Sensitivity ◽  
Zno Nanowire ◽  
Doped Zno ◽  
Self Powered ◽  
Co Doped

Self-powered humidity sensor with high sensitivity and repeatability has been fabricated from Co-doped ZnO NW arrays. Such a high performance can be attributed to the piezo-surface coupling effect and more active sites introduced by the Co dopants.

High performance Ce-doped ZnO nanorods for sunlight-driven photocatalysis

nano Online ◽  
2017 ◽  
Author(s):  
Bilel Chouchene ◽  
Tahar Ben Chaabane ◽  
Lavinia Balan ◽  
Emilien Girot ◽  
Kevin Mozet ◽  
...  
Keyword(s):  
High Performance ◽  
Zno Nanorods ◽  
Doped Zno

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).

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