The first layer has the highest bandgap energy with the purpose to absorb the solar radiation in the small wavelength region, while the next layers with the smaller bandgap of energy were set to absorb solar radiation in the longer wavelength regions.
In a multijunction solar cell, several p-n junctions of semiconducting layers (or subcell) were put in order from top to bottom following the order of their bandgap energies. More research related to multijunction solar cells are needed including the simulation and modeling aspect of MJSC performance under various conditions. Most of the experiments related to the high-efficient MJSC were done using a small specimen prototype, and their realization in the market and industrial scale is still far. Some new experimental results and aspects in high-efficient solar cells such as the new design of a vertical epitaxial heterostructure architecture (which allows a high-efficient narrow band cells), the use of luminescent solar concentrators (LSCs), or a six-junction solar cell have also expanded our knowledge in solar cells research. The combination of the III-V-based solar cells materials such as GaInP, AlGaAs, InP, and GaAs in the form of multijunction solar cells (MJSCs) and their exposure to the several hundreds multiplication of solar radiation had produced the efficiency rate up to 46% at 508 suns for the GaInP/GaAs/GaInAsP/GaInAs system. Some recorded achievements such as References have decorated the global effort to find a better solar cell which is capable of producing clean and sustainable energy for a better future. Various types of solar cells such as silicon-based material, CIGS-based (copper indium gallium arsenide) material, and III-V-based chemical group have been intensively studied to produce a highly efficient solar cell. Over the last couple of decades, the progress on the renewable energy research has significantly increased, especially in the field of solar photovoltaics. The simulation results also suggest that the spectral irradiance exposure at 100 suns and the operating temperature of 25☌ give the highest efficiency. The simulation results have shown a linear behavior of the open-circuit voltage and the efficiency of the solar cells upon variation of temperature, while the nonlinear response of the solar cells performance was obtained due to the change of SIMF. Each set of simulation was done at 25☌, 50☌, 75☌, and 100☌. The incoming solar radiation on the first subcell was a multiplication of AM1.5d spectrum with the value of spectral irradiance multiplication factor (SIMF) 1, 5, 10, 50, 100, 150, and 200 suns.
#How to simulate pn junction diode pc1d software#
The incoming and transmitted spectra of each subcell were simulated by using MATLAB codes, while PC1D software did the power-producing simulations. The effect of spectral irradiance and temperature variation on the performance of the mechanically stacked Al 0.3Ga 0.7As/InP/Ge multijunction solar cells was investigated using a simulation approach.
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