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  Analytical model for transmission dips in self-assembled two-dimensional colloidal crystals

Abdellatif, S. O., Kirah, K., & Marlow, F. (2021). Analytical model for transmission dips in self-assembled two-dimensional colloidal crystals. Applied Optics, 60(33), 10305-10311. doi:10.1364/AO.442750.

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 Creators:
Abdellatif, Sameh O.1, 2, Author              
Kirah, Khaled3, Author
Marlow, Frank2, Author              
Affiliations:
1FAbLab, Centre for Emerging Learning Technologies (CELT), and Electrical Engineering Department, The British University in Egypt (BUE), Cairo, Egypt, ou_persistent22              
2Research Group Marlow, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445612              
3Engineering Physics and Mathematics Department, Faculty of Engineering, Ain Shams University, Cairo, Egypt, ou_persistent22              

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 Abstract: Self-assembled two-dimensional (2D) colloidal crystals (CCs) are utilized in various optical devices, lasers, biosensors, and light harvesting applications. Optical design tuning capabilities, in terms of sphere refractive index and diameter size, can influence the optical characteristics for the close-packed single-layer or multilayer structures. Often transmission dips in 2D CCs are observed, which cannot be explained by Bragg diffraction as it does for 3D photonic crystals. In this work, an analytical attempt to accurately model the transmission dips observed in the 2D CCs optical spectra is presented, aiming to explain the origin of these dips. The formation of a broad dip was studied experimentally as well. A less than 1% mismatching error was found between experiment and theory for the two blaze peak positions as well as for the transmission intensity ratio. Finally, the 2D CCs were integrated in mesostructured solar cells as light trapping structures.

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Language(s): eng - English
 Dates: 2021-09-132021-10-232021-11-122021-11-20
 Publication Status: Published in print
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1364/AO.442750
 Degree: -

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Title: Applied Optics
  Abbreviation : Appl. Opt.
Source Genre: Journal
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Publ. Info: Washington, DC : Optical Society of America
Pages: - Volume / Issue: 60 (33) Sequence Number: - Start / End Page: 10305 - 10311 Identifier: ISSN: 0003-6935
CoNE: https://pure.mpg.de/cone/journals/resource/991042728167604