Marquez Peraca, N.
, Bilir, D.
and Hamadani, B.
(2017),
Frequency response of the external quantum efficiency in multijunction solar cells, Optics Express, [online], https://doi.org/10.1364/OE.25.00A709
(Accessed April 23, 2024)
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Frequency response of the external quantum efficiency in multijunction solar cells
Published
Author(s)
, D T. Bilir,
Abstract
The frequency dependence of the external quantum efficiency (EQE) of high-quality multijunction solar cells was examined by the modulated photocurrent spectroscopy method via an optical setup comprised of a light-pipe-coupled compact LED array. The optical excitation was achieved through sinusoidal electrical modulation of an appropriate LED by a custom-designed, high bandwidth amplifier. We observed very unique features in the amplitude and phase data of the EQE frequency sweeps that are very sensitive to various subcell parameters. These features are discussed extensively within the context of an AC equivalent circuit model.Citation
Optics Express
Volume
25
Issue
16
Pub Type
Journals
Download Paper
Keywords
multijunction solar cell, PV, Photovoltaics, quantum efficiency, modulated photocurrent
Citation
Created June 28, 2017, Updated October 12, 2021