A visible-light photodetector based on heterojunctions between CuO nanoparticles and ZnO nanorods

Optoelectronic devices have various applications in medical equipment, sensors, and communication systems. Photodetectors, which convert light into electrical signals, have gained much attention from many research teams. This study describes a low-cost photodetector based on CuO nanoparticles and Zn...

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Bibliographic Details
Published in:Beilstein journal of nanotechnology 2023-10, Vol.14 (1), p.1018-1027
Main Authors: Giang, Doan Nhat, Nguyen, Nhat Minh, Ngo, Duc Anh, Tran, Thanh Trang, Duy, Le Thai, Tran, Cong Khanh, Tran, Thi Thanh Van, La, Phan Phuong Ha, Dang, Vinh Quang
Format: Article
Language:English
Subjects:
Communications equipment
Communications systems
Copper oxides
cuo nanoparticles
Electron microscopes
Full Research Paper
heterojunction
Heterojunctions
Heterostructures
Medical equipment
Nanomaterials
Nanoparticles
Nanorods
Nanoscience
Nanotechnology
Optoelectronic devices
optoelectronics
P-n junctions
Photometers
Semiconductors
Spectrum analysis
visible-light photodetector
Zinc oxide
zno nanorods
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Summary:Optoelectronic devices have various applications in medical equipment, sensors, and communication systems. Photodetectors, which convert light into electrical signals, have gained much attention from many research teams. This study describes a low-cost photodetector based on CuO nanoparticles and ZnO nanorods operating in a wide range of light wavelengths (395, 464, 532, and 640 nm). Particularly, under 395 nm excitation, the heterostructure device exhibits high responsivity, photoconductive gain, detectivity, and sensitivity with maximum values of 1.38 A·W −1 , 4.33, 2.58 × 10 11 Jones, and 1934.5% at a bias of 2 V, respectively. The sensing mechanism of the p–n heterojunction of CuO/ZnO is also explored. Overall, this study indicates that the heterostructure of CuO nanoparticles and ZnO nanorods obtained via a simple and cost-effective synthesis process has great potential for optoelectronic applications.
ISSN:2190-4286
2190-4286
DOI:10.3762/bjnano.14.84