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Solar Panels and Photovoltaic Materials || Multicell Design for Concentrated Photovoltaic (CPV) Module
摘要： Despite its highest efficiency, concentrated photovoltaic (CPV) technology is still finding its way into the current photovoltaic market which is saturated with conventional flat-plate photovoltaic systems. CPV systems have a great performance potential as they utilize third-generation multi-junction solar cells. In the CPV system, the main aspect is its concentrating assembly design which affects not only its overall performance but also its operation and fabrication. Conventional CPV design targets to use individual solar concentrator for each solar cell. The main motivation of this chapter is to propose a novel concentrating assembly design for CPV that is able to handle multiple solar cells, without affecting their size, using single solar concentrator. Such proposed design, named as multicell concentrating assembly (MCA), will not only reduce the assembly efforts during CPV module fabrication, but it will also lower the overall system cost with simplified design. In this chapter, a detailed design methodology of multicell concentrating assembly (MCA) for CPV module is presented and developed with complete verification through ray tracing simulation and field experimentation.
关键词： homogenizer,CPV,concentrator photovoltaic,multi-junction solar cell,novel concentrator
更新于2025-09-19 17:13:59
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Investigation of InGaAs subcell to InGaP subcell in InGaP/InGaAs/Ge multijunction solar cells with Analytical framework
摘要： Solar radiation consists of different electromagnetic spectrum. Single junction solar cell restricts complete absorption of incident radiations. This limits the efficiency of the solar cells. The way to overcome this calamity is to segregate and classify the entire spectrum into several spectral tiny regions according respective band gaps inherently. This process gives birth to multi-junction solar cell. This paper describes the mathematical model for multi-junction metamorphic inverted solar cell. Starting from their primitive need, present work includes the photovoltaic effect to electroluminescence extinction. MATLAB simulation has been used to demonstrate the photo-voltage and electroluminescence intensity. It is observed from the obtained results that generated photo-voltage increases with the illumination power while the electroluminescence intensity decreases.
关键词： Analytical solution of multi-junction cell,Single-walled nanotube solar cell,Metamorphic inverted solar cell characteristics,Inverted structure,Multi-junction solar cell
更新于2025-09-16 10:30:52
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AIP Conference Proceedings [AIP Publishing INTERNATIONAL CONFERENCE ON INVENTIVE MATERIAL SCIENCE APPLICATIONS : ICIMA 2019 - Coimbatore, India (25–26 September 2019)] INTERNATIONAL CONFERENCE ON INVENTIVE MATERIAL SCIENCE APPLICATIONS : ICIMA 2019 - 2-D hollow core photonic crystal fiber-type absorption layer for enhancement of efficiency and broad response in multi-junction solar cell
摘要： We present a numerical based approach to design a new 2-D hollow core photonic crystal (2-D HCPC) structure of hexagonal lattice arrangement with circular air holes on an Indium Tin Oxide (ITO) slab. We used this structure as an anti-re?ective coating (ARC) layer on top of a multi-junction (GaP/InP/Si) solar cell. Apart from the ARC layer a GaAs PhC as back re?ector (BR) is used in the MJSC structure. A unique approach by blending light trapping structures to enhance solar cell e?ciency and light harvesting capabilities for wavelength beyond 750 nm is the goal of the present work. Under AM1.5G condition, the simulation results of the 2-D HC-PC structure as an absorption layer when incorporated on the MJSC structure led to an improvement of 6.38% in cell e?ciency over the previously reported by the conventional/non-photonic MJSC structure. The absorption spectral response using the 2-D HCPC pattern on ITO as ARC on the MJSC is achieved beyond 1000 nm. An optimization study is also carried out by using InAs as core of the 2-D HCPC structure which resulted to an enhancement of cell e?ciency by 9.34% as compared to the conventional/non-photonic MJSC structure.
关键词： efficiency enhancement,2-D hollow core photonic crystal,anti-re?ective coating,multi-junction solar cell,light trapping
更新于2025-09-12 10:27:22
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[IEEE 2019 International Conference on Intelligent Sustainable Systems (ICISS) - Palladam, Tamilnadu, India (2019.2.21-2019.2.22)] 2019 International Conference on Intelligent Sustainable Systems (ICISS) - Modeling and Simulation of Multi-junction TANDEM Solar Cell
摘要： This paper manages with the modelling of quadruple junction solar cell (qjsc) constructed by using the semiconductor material of AlGaInP-GaAs-GaInAs-Ge at a particular value solar irradiance, temperature. Comparison of output I-V and P-V curve of quadruple junction solar cell is done with triple junction solar cell made up of InGaP-InGaAs-Ge semiconductor material and also single junction solar cell (sjsc) made of a Ge semiconductor by using MATLAB/SIMULINK. It has been found higher value of output voltage and power in quadruple junction solar cell as compared to single, dual or triple junction solar cell. The above described quadruple junction solar cell is made by using the material having a same lattice structure which helps to ease the flow of current in all the four junctions and analysis is done at solar irradiance (1000-800-500) W/cm2. The whole analysis is done through pessimistic approach on the basis of the single exponential model.
关键词： MATLAB Simulink,multi-junction solar cell,quadruple
更新于2025-09-12 10:27:22
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[IEEE 2019 International Conference on Power Generation Systems and Renewable Energy Technologies (PGSRET) - Istanbul, Turkey (2019.8.26-2019.8.27)] 2019 International Conference on Power Generation Systems and Renewable Energy Technologies (PGSRET) - Performance Comparison of (GaAS/GaAs) and (InGaP/GaAs) Tunnel Junction in Multi-Junction Solar Cells
摘要： This study presents a comparison of the performance of two multi-junction solar cells in terms of simulated short-circuit current density, open circuit voltage, efficiency and fill factor one of these cells with an InGaP / GaAs structure with a GaAs / GaAs junction tunnel and the other with the same structure but with an InGaP / GaAs hetrojunction tunnel. The silvaco-ticad software has been used to analyze and study these performances for both solar cells, the total thickness is specified to 0.66μm of top solar cell (GaInP), and the thickness of bottom solar cell (GaAs) is 2.64 μm and the tunnel junction with thickness 0.040 μm. He result of the simulation exposures for these multiple junction solar cells gives a conversion efficiency maximum of 24.2343% (AM1.5) would be obtained by choosing the p-In0.5Ga0.5P/n-GaAs tunnel heterojunction.
关键词： silvaco-ticad,tunnel junction,conversion efficiency,InGaP/GaAs,multi-junction solar cell
更新于2025-09-11 14:15:04