IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v14y2021i16p5149-d618470.html
   My bibliography  Save this article

Charge Density-Versus Time-Controlled Pulse Anodization in the Production of PAA-Based DBRs for MIR Spectral Region

Author

Listed:
  • Ewelina Białek

    (Institute of Materials Science and Engineering, Faculty of Advanced Technologies and Chemistry, Military University of Technology, Str. Gen Sylwestra Kaliskiego 2, 00908 Warsaw, Poland)

  • Grzegorz Szwachta

    (Institute of Materials Science and Engineering, Faculty of Advanced Technologies and Chemistry, Military University of Technology, Str. Gen Sylwestra Kaliskiego 2, 00908 Warsaw, Poland)

  • Miron Kaliszewski

    (Institute of Optoelectronics, Military University of Technology, Str. Gen. Sylwestra Kaliskiego 2, 00908 Warsaw, Poland)

  • Małgorzata Norek

    (Institute of Materials Science and Engineering, Faculty of Advanced Technologies and Chemistry, Military University of Technology, Str. Gen Sylwestra Kaliskiego 2, 00908 Warsaw, Poland)

Abstract

A robust and reliable method for fabricating porous anodic alumina (PAA)-based distributed Bragg reflectors (DBRs), operating in mid-infrared (MIR) spectral region, is presented. The method relies on application of high (U H ) and low (U L ) voltage pulse sequence repeated in cycles. PAA-based DBR consists of alternating high-(d H ) and low-porosity (d L ) layers translated directly into periodically varied refractive index. Two anodization modes were used: time- and charge density-controlled mode. The former generated d H + d L pairs with non-uniform thickness (∆ d ) and effective refractive index (∆ n eff ). It is supposed, that owing to a compensation effect between the ∆ d and ∆n eff , the photonic stopbands (PSBs) were symmetrical and intensive (transmittance close to zero). Under the charge density-controlled mode d H + d L pairs of uniform thickness were formed. However, the remaining ∆ n eff provided an asymmetrical broadening of PSBs. Furthermore, it is demonstrated that the spectral position of the PSBs can be precisely tuned in the 3500–5500 nm range by changing duration of voltage pulses, the amount of charge passing under subsequent U H and U L pulses, and by pore broadening after the electrochemical synthesis. The material can be considered to be used as one-dimensional transparent photonic crystal heat mirrors for solar thermal applications.

Suggested Citation

  • Ewelina Białek & Grzegorz Szwachta & Miron Kaliszewski & Małgorzata Norek, 2021. "Charge Density-Versus Time-Controlled Pulse Anodization in the Production of PAA-Based DBRs for MIR Spectral Region," Energies, MDPI, vol. 14(16), pages 1-14, August.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:16:p:5149-:d:618470
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/14/16/5149/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/14/16/5149/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Rostami, Mohsen & Pirvaram, Atousa & Talebzadeh, Nima & O’Brien, Paul G., 2021. "Numerical evaluation of one-dimensional transparent photonic crystal heat mirror coatings for parabolic dish concentrator receivers," Renewable Energy, Elsevier, vol. 171(C), pages 1202-1212.
    2. Mohsen Rostami & Nima Talebzadeh & Paul G. O’Brien, 2020. "Transparent Photonic Crystal Heat Mirrors for Solar Thermal Applications," Energies, MDPI, vol. 13(6), pages 1-13, March.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Talebzadeh, Nima & Rostami, Mohsen & O’Brien, Paul G., 2021. "Elliptic paraboloid-based solar spectrum splitters for self-powered photobioreactors," Renewable Energy, Elsevier, vol. 163(C), pages 1773-1785.
    2. Rostami, Mohsen & Pirvaram, Atousa & Talebzadeh, Nima & O’Brien, Paul G., 2021. "Numerical evaluation of one-dimensional transparent photonic crystal heat mirror coatings for parabolic dish concentrator receivers," Renewable Energy, Elsevier, vol. 171(C), pages 1202-1212.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:14:y:2021:i:16:p:5149-:d:618470. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.