Effect of Nanoporous Anodic Aluminum Oxide (AAO) Characteristics On Solar Absorptivity

Document Type: Original Research Paper


1 Department of Chemical Engineering, University of Sistan and Baluchestan, Zahedan, Iran

2 Department of Mechanical Engineering, University of Sistan and Baluchestan, Zahedan, Iran


Nanoporous anodic aluminum oxide (AAO) has been used in many different fields of science and technology, due to its great structural characteristics. Solar selective surface is an important application of this type porous material. This paper investigates the effect of nanoporous AAO properties, including; film thickness, pore area percentage and pore diameter, on absorption spectra in the range of solar radiation. The parameters were verified individually depending on anodization condition, and the absorption spectra were characterized using spectrophotometer analysis.  The results showed that the absorptivity was increased with growth of the film thickness. Furthermore, increasing the pore diameter shifted the absorption spectra to the right range, and vice versa. The investigation revealed the presence of an optimum pore area percentage around 14% in which the absorptivity was at its maximum value.


[1] Y.Y. Zhu, G.Q. Ding, J.N. Ding, N.Y. Yuan: AFM,SEM and TEM Studies on Porous Anodic Alumina,J. of Nanoscale Res Lett, 5 (2010) 725-734.

[2] M. Jung, H.S. Lee, H.L. Park, H.-j. Lim, S.-i. Mho:Fabrication of the uniform CdTe quantum dot arrayon GaAs substrate utilizing nanoporous aluminamasks, J. of Current Applied Physics, 6 (2006)1016-1019.

[3] H. Masuda, M. Satoh: Fabrication of Gold NanodotArray Using Anodic Porous Alumina as anEvaporation Mask, J. of Japanese Journal ofApplied Physics, 35 (1996) L126-L129.

[4] C.-H. Huang, H.-Y. Lin, Y. Tzeng, C.-H. Fan, C.-Y.Liu, C.-Y. Li, C.-W. Huang, N.-K. Chen, H.-C.Chui: Optical characteristics of pore size on porousanodic aluminium oxide films with embedded silvernanoparticles, J. of Sensors and Actuators A, 180(2012) 49-54.

[5] L. Zaraska, G.D. Sulka, M. Jaskuła: Porous anodicalumina membranes formed by anodization ofAA1050 alloy as templates for fabrication ofmetallic nanowire arrays, J. of Surface & CoatingsTechnology, 205 (2010) 2432-2437.

[6] G. Ali, M. Ahmadb, J.I. Akhterb, M. Maqboolc, S.O.Choa: Novel structure formation at the bottomsurface of porous anodic alumina fabricated bysingle step anodization process, J. of Micron, 41(2010) 560-564.

[7] T. Nagaura, F. Takeuchi, S. Inoue: Fabrication andstructural control of anodic alumina films withinverted cone porous structure using multi-stepanodizing, J. of Electrochimica Acta, 53 (2008)2109-2114.

[8] J. Ding, Y. Zhu, N. Yuan, G. Ding: Reduction ofnanoparticle deposition during fabrication of porousanodic alumina, J. of Thin Solid Films, 520 (2012)4321-4325.

[9] H. Jha, Y.-Y. Song, M. Yang, P. Schmuki: Porousanodic alumina: Amphiphilic and magneticallyguidable micro-rafts, J. of ElectrochemistryCommunications, 13 (2011) 934-937.

[10] M. Ghriba, R. Ouertani, M. Gaidi, N. Khedher, M.B.Salem, H. Ezzaouia: Effect of annealing onphotoluminescence and optical properties of porousanodic alumina films formed in sulfuric acid forsolar energy applications, J. of Applied SurfaceScience, 258 (2012) 4995-5000.

[11] B. Carlsson, K. Moller, U. Frei, S. Brunold, M.Kohl: Comparison between predicted and actuallyobserved in-service degradation of a nickelpigmented anodized aluminium absorber coating for solar DHW systems, J. of Solar Energy Materials & Solar Cells, 61 (2000) 223-238.

[12] D. Ding, W. Cai, M. Long, H. Wu, Y. Wu: Optical,structural and thermal characteristics of Cu–CuAl2O4 hybrids deposited inanodic aluminumoxide as selective solar absorber, J. of Solar EnergyMaterials & Solar Cells, 94 (2010) 1578-1581.

[13] H.M. Chen, C.F. Hsin, R.-S. Liu, S.-F. Hu, C.-Y.Huangb: Controlling Optical Properties ofAluminum Oxide Using ElectrochemicalDeposition, J. of Journal of The ElectrochemicalSociety, 154 (2007) K11-K14.

[14] X.H. Wang, T. Akahane, H. Orikasa, T. Kyotani:Brilliant and tunable color of carbon-coated thinanodic aluminum oxide films, J. of Applied physicsletters, 91 (2007) 9081-9083.

[15] Q. Xu, Y. Yang, J. Gu, Z. Li, H. Sun: Influence ofAl substrate on the optical properties of porousanodic alumina films, J. of Materials Letters, 74(2012) 137-139.

[16] Q. Xu, H.-Y. Sun, Y.-H. Yang, L.-H. Liu, Z.-Y. Li:Optical properties and color generation mechanismof porous anodic alumina films, J. of AppliedSurface Science, 258 (2011) 1826-1830.

[17] T.-S. Shih, P.-S. Wei, Y.-S. Huang: Opticalproperties of anodic aluminum oxide films onAl1050 alloys, J. of Surface & CoatingsTechnology, 202 (2008) 3298-3305.

[18] A. Santos, V.S. Balderrama, M. Alba, P. Formentín,J. Ferré-Borrull, J. Pallarès, L.F. Marsal: TunableFabry-Pérot interferometer based on nanoporousanodic alumina for optical biosensing purposes, J.of Nanoscale Research Letters, 7 (2012) 370-373.

[19] T. PAVLOVIC, A. IGNATIEV: Optical propertiesof spectrally selective anodically coatedelectrolytically colored aluminum surfaces, J. ofSolar Energy Materials, 16 (1987) 319-331.

[20] Y. Lei, W. Cai, G. Wilde: Highly orderednanostructures with tunable size, shape andproperties- A new way to surface nano-patterningusing ultra-thin alumina masks, J. of Progress inMaterials Science, 52 (2007) 465-539.

[21] A.L. Avila-Marin: Volumetric receivers in SolarThermal Power Plants with Central ReceiverSystem technology: A review, J. of Solar Energy 85(2011) 891-910.