scholarly journals Effects of the Novel Micro-Structure on the Reflectance of Photovoltaic Silicon Solar Cell

2018 ◽  
Author(s):  
Lei Zhang
Keyword(s):  
Solar Cell ◽  
Silicon Solar Cell ◽  
The Novel ◽  
Micro Structure

An Investigation of a Novel Structure Polycrystalline Silicon Solar Cell for Concentrated Solar Power

2017 ◽  
Author(s):  
Ali Radwan ◽  
Mohamed Emam ◽  
Radwan M. Elzoheiry ◽  
Mahmoud Ahmed
Keyword(s):  
Solar Cell ◽  
Heat Sink ◽  
Polycrystalline Silicon ◽  
Silicon Solar Cell ◽  
Cell Structure ◽  
The Novel ◽  
Efficient Operation ◽  
Novel Structure ◽  
Solar Cell Structure ◽  
Cooling Technique

To achieve reliable and efficient operation of generic polycrystalline silicon solar cell under concentrated sunlight, a novel structure of the cell layers is proposed along with effective cooling technique using microchannel heat sink (MCHS). In the novel structure, Boron Nitride with the volume fraction of 20%, 40%, and 60% as a filler is incorporated in the Ethylene Vinyl Acetate (EVA) matrix to form a new composite. The new composite is used instead of the conventional EVA layer in the solar cell. Various solar cell structures integrated with MCHS are studied and compared with the conventional structure. To determine the performance of the developed concentrated photovoltaic thermal (CPVT) system, a comprehensive three-dimensional model of the solar cell with heat sink is developed. The model is numerically simulated and validated. Based on the validated results, it is found that the novel structure with EVA-60% BN composite along with aluminum foil back sheet attains 30% increase in the gained solar cell electric power with 10.9 % reduction in the cell temperature compared with the conventional solar cell structure at the same cooling mass flow rate of 50 g/min and concentration ratio of 20. However at CR = 20, Vw = 1m/s and Ta = 30°C a significant damage of the conventional solar cell structure will occurs if no effective cooling technique is used. Moreover, the developed design of solar cell achieves a higher CPVT-system thermal efficiency compared with the conventional one.

scholarly journals Large-Scale Spherical Silicon Solar Cell for Advanced Light Management

2020 ◽  
Author(s):  
Nazek El-Atab ◽  
Nadeem Qaiser ◽  
Rabab Bahabry ◽  
Muhammad Mustafa Hussain
Keyword(s):  
Solar Cell ◽  
Large Scale ◽  
Silicon Solar Cell ◽  
Light Management

CdSe/CdS Quantum Dot Core-Shell for Silicon Solar Cell Efficiency Enhancement

2020 ◽  
Vol 29 ◽  
pp. 8-14
Author(s):  
Manal Midhat Abdullah ◽  
Omar Adnan Ibrahim
Keyword(s):  
Solar Cell ◽  
Silicon Solar Cell ◽  
Energy Gap ◽  
Spectral Response ◽  
Solar Spectrum ◽  
Core Shell ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Electron Hole Pair ◽  
Pair Generation

Core-shell nanocrystals are utilized to improve vitality conversion efficiency of Si based solar cells. In the present work, a study of synthesis and characterization of photo luminescent, down-shifting, core-shell CdSe/CdS quantum dots is introduced. The QD,s absorb in the UV range (350nm) of the solar spectrum and emit photons with wavelengths centered at (574 nm). Calculated energy gap is (2.16 eV), which is well suited for Silicon absorption and electron-hole pair generation. The grain size is ranged between (1.814 and 3.456 nm). Results show that the cell efficiency is improved from (8.81%) (For a reference silicon solar cell) to (10.07%) (For a CdSe/CdS QD deposited directly on the surface of the solar cell). This improvement is referred to the spreading of the absorbed solar radiation over the spectral response of the Si solar cell.

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