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  4. Charge Extraction and Recombination Dynamics of CdSe/CdTe Solar Cells Studied with Transient Photovoltage/Photocurrent Techniques
 
conference paper

Charge Extraction and Recombination Dynamics of CdSe/CdTe Solar Cells Studied with Transient Photovoltage/Photocurrent Techniques

Abudulimu, Abasi
•
Li, Dengbing
•
Chen, Lei
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January 1, 2023
2023 Ieee 50Th Photovoltaic Specialists Conference, Pvsc
IEEE 50th Photovoltaic Specialists Conference (PVSC)

Significant advancements have been made in the development of high-performance cadmium telluride (CdTe)-based thin film solar cells. However, studies examining the transient excited-state charge dynamics, which determine the final steady-state device performance, are relatively scarce, particularly under device operando conditions. In this work, we investigated charge recombination and extraction dynamics of CdTe solar cells, in comparison with MAPbI3 and narrow bandgap perovskitebased solar cells, using bias-light intensity-dependent transient photovoltage (TPV) and transient photocurrent (TPC) techniques. We found that trap-assisted recombination is the dominant mechanism in the CdTe device at open-circuit, even at 1 sun illumination. Parameters such as charge density, carrier lifetime, and recombination order were extracted from the TPV/TPC data and successfully used to reproduce the open-circuit voltage and short-circuit current densities of the devices measured at steadystate. Consequently, we conclude that these techniques are effective for characterizing charge recombination and extraction dynamics of CdTe solar cells under operando conditions.

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Type
conference paper
DOI
10.1109/PVSC48320.2023.10359571
Web of Science ID

WOS:001151676200047

Author(s)
Abudulimu, Abasi
Li, Dengbing
Chen, Lei
Santos, Jose
Zimmermann, Iwan  
Katakumbura, Nadeesha
Brau, Tyler
Bastola, Ebin
Phillips, Adam
Song, Zhaoning
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Corporate authors
IEEE
Date Issued

2023-01-01

Publisher

IEEE

Publisher place

New York

Published in
2023 Ieee 50Th Photovoltaic Specialists Conference, Pvsc
ISBN of the book

978-1-6654-6059-0

Subjects

Technology

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
GMF  
Event nameEvent placeEvent date
IEEE 50th Photovoltaic Specialists Conference (PVSC)

San Juan, PR

JUN 11-16, 2023

FunderGrant Number

Air Force Research Laboratory

FA9453-19C-1002

U.S. DOE's Office of Energy Efficiency and Renewable Energy (EERE) under the Solar Energy Technologies Office (SETO)

DEEE0008974

U.S. Department of Energy

37989

Available on Infoscience
March 18, 2024
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/206338
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