Numerical Simulations of Optical Absorption and Spectral Selective of Ni Nanowire/AAO Composites

Abstract:

Spectral selectivity absorber is a key component in the solar collectors, which absorbs solar energy and converts it to thermal energy by heating liquid water. Metal nanowire arrays (NWAs) have potential to be used as solar collector because of good optical absorption in the visible region. In the paper, we use finite-difference time-domain (FDTD) solutions to calculate the optical absorption and spectral selectivity of nickel (Ni) NWA/AAO composites. By changing the length (L), fill-factor (FF), and surface roughness, we simulate the optical absorption and the spectral selectivity in terms of structural parameters of Ni NWA/AAO composites. Results demonstrate that Ni NWA/AAO composites with the length of 2 μm and the fill-factor of 0.13 (the diameter is 0.04 μm) have good optical absorption and spectral selectivity,and rough surfaces is better for higher conversion efficiency of Ni NWA/AAO composites.

• Periodical: Key Engineering Materials (Volumes 602-603)
• Pages: 975-979
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.602-603.975
• Online since: March 2014
• Authors: Xiu Li Si, Shao Long Wu, Bo Yang, Guo An Cheng, Rui Ting Zheng*
• Keywords: Ni Nanowire, Optical Absorption, Simulation, Spectral Selectivity

References

[1] X K Du, C Wang, T M Wang, et al, Microstructure and spectral selectivity of Mo-Al2O3solar selective absorbing coatings after annealing, Thin Solid Films 516 (2008): 3971-3977.

DOI: 10.1016/j.tsf.2007.07.193

[2] Y Mastai, S Polarz, M Antonietti, Silica-carbon nanocomposites-a new concept for the design of solar absorbers, Advanced Functional Materials, 12 (2002): 197-202.

DOI: 10.1002/1616-3028(200203)12:3<197::aid-adfm197>3.0.co;2-a

[3] C E Kennedy, H Price, Progress in development of high-temperature solar-selective coatings, Solar Engineering, 2006: 749-755.

[4] S Zhao, E Wäckelgård, The optical properties of sputtered composite of Al-AlN, Solar energy materials and solar cells, 90 (2006): 1861-1874.

DOI: 10.1016/j.solmat.2005.11.006

[5] Q C Zhang, D R Mills, New cermet film structures with much improved selectivity for solar thermal applications, Applied physics letters, 60 (1992): 545-547.

DOI: 10.1063/1.106602

[6] Y Cao, J Tian, X Hu, Ni–Cr selective surface based on polyamide substrate, Thin solid films, 365 (2000): 49-52.

DOI: 10.1016/s0040-6090(99)01095-0

[7] C E Kennedy, Review of mid-to high-temperature solar selective absorber materials, Golden Colorado: National Renewable Energy Laboratory, (2002).

[8] L Hu, G Chen, Analysis of optical absorption in silicon nanowire arrays for photovoltaic applications, Nano letters, 7 (2007): 3249-3252.

DOI: 10.1021/nl071018b

[9] Z P Yang, L Ci, J A Bur, et al, Experimental observation of an extremely dark material made by a low-density nanotube array, Nano letters, 8 (2008): 446-451.

DOI: 10.1021/nl072369t

[10] E Rephaeli, S Fan, Tungsten black absorber for solar light with wide angular operation range, Applied Physics Letters, 92 (2008): 211107-211107.

DOI: 10.1063/1.2936997

[11] R L Zong, J Zhou, B Li, et al, Optical properties of transparent copper nanorod and nanowire arrays embedded in anodic alumina oxide, The Journal of chemical physics, 123 (2005): 094710.

DOI: 10.1063/1.2018642

[12] B Yang, Structure and optical properties of metal nanowire arrays, Beijing normal university, (2008).

[13] K Yee, Numerical solution of initial boundary value problems involving Maxwell's equations in isotropic media, Antennas and Propagation, IEEE Transactions on, 14 (1966) 302-307.

DOI: 10.1109/tap.1966.1138693

[14] Air Mass 1. 5 Spectra, American Society for Testing and Materials, http: /rredc. nrel. gov/solar/spectra/am1. 5.

[15] Kirchhoff's laws, http: /en. wikipedia. org/wiki/Kirchhoff's_laws.

[16] Handbook of Optical Constants of Solids: Index, Access Online via Elsevier, (1998).

[17] W L Barnes, A Dereux, T W Ebbesen. Surface plasmon subwavelength optics, Nature, 424 (2003): 824-830.

DOI: 10.1038/nature01937