High efficiency Titanium oxides and nitrides ultra-broadband solar energy absorber and thermal emitter from 200 nm to 2600 nm

We propose an ultra-broadband perfect absorber and emitter based on titanium and its oxide and nitride. The absorber is composed of TiO2-SiO2-TiN-TiO2-SiO2-Ti. Through the array structure of three-layer nano-disks, the perfect absorption with an average absorption rate of 93.77% is achieved in the u...

Full description

Saved in:
Bibliographic Details
Published in:Optics and laser technology 2022-06, Vol.150, p.108002, Article 108002
Main Authors: Zheng, Ying, Wu, Pinghui, Yang, Hua, Yi, Zao, Luo, Yao, Liu, Li, Song, Qianjv, Pan, Miao, Zhang, Jianguo, Cai, Pinggen
Format: Article
Language:English
Subjects:
Absorption spectra
Broadband
Clean energy
Efficiency
Emitters
High absorption efficiency
High heat emission efficiency
Nano-disk array
Optoelectronics
Photovoltaic cells
Polarization
Radiant flux density
Radiation
Resonance
Solar energy
Solar energy absorbers
Surface plasmon resonance
Thermal radiation
Thin films
Titanium dioxide
Titanium oxides
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We propose an ultra-broadband perfect absorber and emitter based on titanium and its oxide and nitride. The absorber is composed of TiO2-SiO2-TiN-TiO2-SiO2-Ti. Through the array structure of three-layer nano-disks, the perfect absorption with an average absorption rate of 93.77% is achieved in the ultra-broadband band of 200–2600 nm, and the solar energy loss is extremely small. Under the air quality (AM) 1.5, the average absorption rate is 95.89%. The result that the structure has high heat emission efficiency is also exciting, and the emission efficiency is as high as 92.83% at 1500 K and 94.51% at 2000 K. The ultra-broadband perfect absorption, high heat emission efficiency and polarization insensitivity of the structure make it widely used, such as solar power generation, radiant energy and information collection. [Display omitted] •The absorption bandwidth (A > 90%) reaches 1869 nm (288.5 nm–2157.5 nm), the average absorption rate in this range is 96.56%, and the average absorption efficiency in the whole band (200–2600 nm) is 93.77%.•The emission efficiency is as high as 92.83% at 1500 K and 94.51% at 2000 K.•The solar absorber is polarization independent., and its absorption efficiency is insensitive to the change of incident angle. Solar energy is a widely used clean energy source, and solar absorber with wider spectrum and higher efficiency is more ideal for various applications of solar energy. In this paper, an efficient and ultra-broadband solar absorber is proposed, which is composed of periodic nano-disk combination array on TiO2 thin film. In our work, we use FDTD solutions to simulated and calculated the field distribution, absorption spectrum and thermal radiation intensity of the structure to explore the physical mechanism of the resonator. Among them, the resonance between the polarization direction of the three-layer nano-disk and the plasmon resonance at the junction of TiN nano-disk and TiO2 have obtained the ultra-broadband high-efficiency absorption of the absorber. The absorption bandwidth (A > 90%) reaches 1869 nm (288.5 nm-2157.5 nm), the average absorption efficiency in this range is 96.56%, and the average absorption efficiency in the whole wave band (200–2600 nm) is 93.77%. In addition, the structure has extremely strong heat radiation intensity, with high emission efficiency of 92.83% at 1500 K. Furthermore, the solar absorber proposed by us is polarization independent. In Transverse Electric (TE) mode and Transverse Magnetic
ISSN:0030-3992
1879-2545
DOI:10.1016/j.optlastec.2022.108002