Impedance spectroscopy of amorphous/crystalline silicon heterojunction solar cells under dark and illumination
Solar Energy(2023)
Abstract
•Electronic properties of a-Si:H/c-Si heterojunction solar cells are investigated.•Impedance spectra of cell are best modelled by including a dispersion element.•Constant phase element behaviour is assigned to trap levels at junction interface.•Under illumination, a distinct dynamic process is observed from cell.
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Key words
Constant phase element, Impedance spectroscopy, Silicon heterojunction solar cell, Relaxation time constants
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