Graphene as a pre-illumination cooling approach for a concentrator photovoltaic (CPV) system

Alzahrani, Mussad; Roy, Anurag; Shanks, Katie; Sundaram, Senthilarasu

doi:10.1016/j.solmat.2020.110922

Cited by 15 publications

(11 citation statements)

References 52 publications

(54 reference statements)

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“…This work presents an extension of our previous report regarding their thermal analysis [18] and a corresponding interpretation on the focal spot and graphene-coated ND (GCND) filter. The impact of graphene orientation, whether normal to the solar cell area or the Fresnel lens area, is discussed, considering its effects on the single-junction (polycrystalline Si) solar cell efficiency.…”

Section: Introductionmentioning

confidence: 80%

“…The experimental approach and set-up for this study are the same as reported in our previous work [18]. A further schematic is given in this study to illustrate the overall experimental set-up configuration highlighting the graphene layer orientation.…”

Section: Resultsmentioning

confidence: 99%

“…Although the single-junction (polycrystalline Si) cell efficiency for samples facing the solar irradiance source was represented in [18], the comparison for the cell efficiency according to the graphene orientation is needed to prove the optimum performance. Figure 6 shows the cell efficiency as a function of the measured solar cell power output to the effective solar irradiance on the solar cell area.…”

Section: Resultsmentioning

confidence: 99%

“…The GC was developed by the screen-printing method, and the detailed fabrication process has been mentioned in our earlier work [18]. Therefore, we adopted similar GC samples for this study.…”

Section: Materials and Methodologymentioning

confidence: 99%

“…Our previous study attempted to improve a CPV module efficiency utilising a singlejunction (polycrystalline Si) solar cell by introducing a graphene layer for heat control [18]. The solution incorporated neutral density (ND) filters as a subsequent optical stage to the concentrator to improve thermal performance as a pre-illumination cooling technique.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of Thermal Stress Arising in a Graphene Neutral Density Filter for Concentrated Photovoltaic System

et al. 2021

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As an excellent heat spreader candidate, graphene attracts considerable interest concerning its application in concentrated photovoltaic (CPV) systems. The consequences of employing a graphene-coated neutral density (GCND) filter to mitigate concentrated light impact adequately. Hence, the temperature for a concentrated photovoltaic system is reported in this work. A systematic thermal characterisation study was carried out using three different thickness-based GCND filters. Interestingly, using the GCND filter, the focal spot temperature remained considerably lower than that of the incident temperature for a more extended period. The graphene coating orientation further influenced the temperature gradient behaviour of the focal spot and incident temperature. The thermal and electrical results depended on the GC samples’ thickness and emplacement, leading to dramatic differences in their respective photovoltaic performance. As a base substrate of the GCND filter, the low-iron glass suffered extreme thermal stress under concentrated solar irradiance. This thermal stress phenomenon on the GCND filter was further analysed. This study suggests that using GCND leads to lower temperature maintenance of the CPV focal point, which minimises the PV cell thermal stress. However, the GCND filter also experienced considerable thermal stress during the CPV experiment.

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Section: Introductionmentioning

confidence: 80%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Materials and Methodologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation of Thermal Stress Arising in a Graphene Neutral Density Filter for Concentrated Photovoltaic System

et al. 2021

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Effects of Structure Defects on Thermal Transport at the Graphene–Water Interface

Zhang

Chen

Qiao

et al. 2023

Adv Materials Inter

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The graphene microchannel heat sinks have attracted extensive attention due to its high cooling efficiency in microelectric devices. The interfacial thermal resistance (ITR) between graphene as the bottom layer of microchannel and water is one of the key factors of its good working performance. In this paper, the impacts of structure defects in graphene surfaces on ITR of the graphene–water interface are investigated using molecular dynamic simulations. The results indicate that graphene layer with different types of structure defects shows different variation trends of ITR as the defect concentration or temperature increases. A peak ITR reduction of nearly 30% is generated with the Stone‐Wales defect of 2%. Finally, the density of phonon states and interfacial binding energy analysis are performed to verify the correctness of the simulation results. The present work expands the understanding of structure defects effect on thermal transport in graphene microchannel.

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Concentrating photovoltaic systems: a review of temperature effects and components

Zou,

Qin,

Liu

et al. 2023

J Therm Anal Calorim

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Graphene as a pre-illumination cooling approach for a concentrator photovoltaic (CPV) system

Cited by 15 publications

References 52 publications

Investigation of Thermal Stress Arising in a Graphene Neutral Density Filter for Concentrated Photovoltaic System

Investigation of Thermal Stress Arising in a Graphene Neutral Density Filter for Concentrated Photovoltaic System

Effects of Structure Defects on Thermal Transport at the Graphene–Water Interface

Concentrating photovoltaic systems: a review of temperature effects and components

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