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Proceedings Paper

Comparison of sol-gel-based holographic recording medium and photopolymer for use in a solar concentrator (Conference Presentation)
Author(s): Brian Rogers; Izabela Naydenova; Suzanne Martin

Paper Abstract

This work aims to optimise the sol-gel material for use in a holographic concentrator. After chemical optimisation, characterisation of the material’s performance in different regimes of thickness, spatial frequency and recording wavelength are carried out in order to design optimal devices for different solar concentrating roles. An innovative approach to the recording process is introduced in order to account for the range of spatial frequencies involved in a light concentrating optical element such as a holographic lens. A spatial light modulator is utilised to spatially vary the intensity of the recording beams in order to account for the frequency dependent optimum recording intensity. Holographic lenses recorded in this fashion in both photopolymer and sol-gel is compared. Solar cell efficiency with and without the holographic lenses is compared. The lenses are prepared with a specific device role for use with or without solar tracking systems. The efficiency of these systems and the degradation to the device due to solar UV radiation is considered, both are compared for systems based on photopolymer and sol-gel systems.

Paper Details

Date Published: 1 April 2020
Proc. SPIE 11367, Photosensitive Materials and their Applications, 113670P (1 April 2020); doi: 10.1117/12.2555744
Show Author Affiliations
Brian Rogers, Technological Univ. Dublin (Ireland)
Izabela Naydenova, Technological Univ. Dublin (Ireland)
Suzanne Martin, Technological Univ. Dublin (Ireland)

Published in SPIE Proceedings Vol. 11367:
Photosensitive Materials and their Applications
Robert R. McLeod; Inmaculada Pascual Villalobos; Yasuo Tomita; John T. Sheridan, Editor(s)

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