Browsing School of Engineering by Author "Ahmed, Hind"
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Analysis of Luminescent Solar Concentrator Performance Using a Ray Tracing Algorithm: Modelling, Optimization and Validation
RAFIEE, MEHRAN; Chandra, Subhash; Ahmed, Hind; McCormack, Sara J. (2017)In this paper, the behaviour of a LSC doped with Near-Infrared Quantum Dots (NIR-QD) in an epoxy host material is modelled by a ray tracing algorithm under different iteration numbers. It is shown that by increasing the ... -
Design and Characterization of a Roof-Mounted Compound Parabolic Concentrator with Phase Change Material
Mc Cormack, Sarah; Ortega, Anita; Reid, Isobella; Akbari, Hoda; Ahmed, Hind; Chandra, Subhash; Parfreya, Eric (2018)This paper presents the design, fabrication and performance of a roof mounted compound parabolic concentrators (CPC) with and without Phase Change Material (PCM) for electricity generation. A truncated Asymmetric ... -
Effect of high temperature deposition on CoSi 2 phase formation
Ahmed, Hind (2013) -
Effects of Multiple Organic Dyes for Luminescent Down-Shifting Layers Application
GILLIGAN, SARAH; McCormack, Sarah J.; Ahmed, Hind; Subhash, Chandra (2017)High energy photons in the UV region are not efficiently used in solar cells and limit the overall efficiency of the cell. Luminescent Down-Shifting (LDS) layers can be used to convert the high energy photons to a lower ... -
Enhancement in Solar Cells Efficiency by Luminescent Down-Shifting layers
Ahmed, Hind; Mc Cormack, Sarah (2013)In this paper, core-shell semiconductor quantum dots (QDs) CdSeS/ZnS with emission at 490 nm and 450 nm were investigated for their use in luminescent down-shifting (LDS) layers. Luminescent quantum yield ... -
External Quantum Efficiency Improvement with Luminescent Downshifting Layers: Experimental and Modelling
Ahmed, Hind; Mc Cormack, Sarah (2015) -
External Quantum Efficiency Measurements and Outdoor Characterisation for PV Luminescent Downshifting Devices
Mc Cormack, Sarah; Ahmed, Hind (2019)In this paper, LDS layers (100 ± 05 μm) of Violet Lumogen dye encapsulated into PMMA polymer with different concentrations, 0.082, 0.044 and 0.170% w/w, were prepared by drop casting onto glass substrates. Layers were ... -
Gold Nanorods for application in Plasmonic Luminescent Solar Concentrators
Mc Cormack, Sarah; Sethi, Arunima; Ahmed, Hind; Chandra, Subhash (2017)Luminescent solar concentrator (LSC) device is based on energy down shifting phenomenon with a primary goal of trapping, and concentrating solar radiation. The trapped light is guided to the photovoltaic cell through total ... -
Improving the Mathematical Model for Luminescent Down-Shifting Layers by Investigating their Loss Mechanisms
RAFIEE, MEHRAN; Ahmed, Hind; Chandra, Subhash; McCormack, Sarah J. (2017)A Luminescent Down-Shifting (LDS) layer is an optical approach to improve the solar cell’s optical response by using luminescent species doped in a polymer matrix material to form a thin layer to be deposited on top of the ... -
Optimization and Photostability Studies of Luminescent Organic Dyes for Solar Devices
GILLIGAN, SARAH; McCormack, Sarah J.; Ahmed, Hind; Chandra, Subhash (2018)The overall efficiency of a solar cell is limited due to high energy photons within the UV region not being used efficiently. Luminescent Down-Shifting (LDS) layers are used to convert the high energy photons to a lower ... -
Phase Change Materials for Solar Energy Applications
Akbari, Hoda; Ahmed, Hind; Mc Cormack, Sarah (Central West Publishing, 2019)Increasing levels of greenhouse gas (GHG) emissions and energy dependency on other countries have brought governments to develop and improve various ways of producing energy. There are many different methods of renewable ... -
Plasmonic Interaction in Enhanced Luminescent Down-Shifting Layers for Photovoltaic Devices
Ahmed, Hind; Mc Cormack, Sarah (Nova Science Publishers, 2017)Harvesting solar energy has the potential to reduce carbon emissions and to provide clean energy contributing to sustainable development. Most photovoltaic (PV) research to date has focused on achieving higher PV conversion ... -
Quantum Dot Luminescent Solar Concentrator: Optimization of Concentration and Thickness
RAFIEE, MEHRAN; Chandra, Subhash; Ahmed, Hind; McCormack, Sarah J. (2017)The absorption coefficient of a Luminescent Solar Concentrator (LSC) can non-linearly affect the total optical efficiency (η_opt) and solar concentration ratio (C_P) of the device. Absorption is determined by two critical ...