Capacitance Transients, Photoconductive Decay, and Impedance Spectroscopy on 19% to 22% Efficient Silicon Solar Cells

Johnston, Steve; Kern, Dana B.

doi:10.1109/PVSC48320.2023.10359830

Capacitance Transients, Photoconductive Decay, and Impedance Spectroscopy on 19% to 22% Efficient Silicon Solar Cells

Conference · 24 December 2023

DOI:https://doi.org/10.1109/PVSC48320.2023.10359830· OSTI ID:2309699

; Kern, Dana B.

High efficiency silicon solar cells are characterized using current-voltage curves, electroluminescence imaging, impedance spectroscopy, capacitance transients, microwave photoconductive decay, and time-resolved photoluminescence imaging. The sample set is composed of cells from different manufacturers and includes an n-type silicon heterojunction (SHJ), an n-type passivated emitter rear totally diffused (PERT), and five different p-type passivated emitter rear contact (PERC) cells. Carrier lifetimes, both photoconductivity and photoluminescence, are measured co-located with the light excitation pulse and within the cell but away from the light spot. Luminescence intensity and excess carrier lifetimes correlate to cell voltage. The capacitance transient time constants correlate to the capacitance values extracted from impedance spectroscopy.

Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office

DOE Contract Number:: AC36-08GO28308; AC36-08GO28308

OSTI ID:: 2309699

Report Number(s):: NREL/CP-5K00-86468; MainId:87241; UUID:6c61a03c-ad1f-415e-b6d5-0d574db420b4; MainAdminId:71861

Country of Publication:: United States

Language:: English

References (11)

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Related Subjects

SOLAR ENERGY
capacitance
charge carrier lifetime
imaging
impedance spectroscopy
photoconductivity
photovoltaic cells
silicon

Capacitance Transients, Photoconductive Decay, and Impedance Spectroscopy on 19% to 22% Efficient Silicon Solar Cells

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