Cascade solar cell with amorphous silicon-based solar cell

Abstract

A cascade solar cell structure includes an amorphous silicon-based solar cell on a non-silicon solar cell to be configured for an anti-reflective surface and absorbing incident light with short wavelength.

Description

technical field [0001] The invention relates to a tandem solar cell, in particular to a tandem solar cell with an amorphous silicon-based top solar cell. Background technique [0002] In order to maximize the output of photovoltaic electronic components, the number of photons of different energies and wavelengths absorbed by semiconductor materials needs to be continuously increased. The spectrum of sunlight is roughly distributed between 300 and 2200 nanometers, and the corresponding energy is between 4.2 and 0.59 electron volts (eV). In photovoltaic electronic components, the energy difference between the conduction band and the covalent band of semiconductor layers with different doping types that form the absorption layer of the component is called the optical bandgap energy, and the sunlight that can be absorbed by photovoltaic electronic components The energy range depends on this optical energy gap. When the energy of solar radiation is smaller than the optical ener...

AI Technical Summary

Problems solved by technology

Although single-junction solar cells are effective, they cannot achieve the performance and conversion power of multi-junction solar cells

Unfortunately, multi-junction and single-junction solar cells are made of different materials and can only capture part of the sunlight and convert it into electricity

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