Cu migration and its impact on the metastable behavior of CdTe solar cells

D. Guo; R. Akis; D. Brinkman; A. Moore; T. Fang; I. Sankin; Dragica Vasileska; Christian Ringhofer

doi:10.1109/PVSC.2015.7355706

Cu migration and its impact on the metastable behavior of CdTe solar cells

D. Guo, R. Akis, D. Brinkman, A. Moore, T. Fang, I. Sankin, Dragica Vasileska, Christian Ringhofer

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

12 Scopus citations

Abstract

In this work we report on development of a 1D reaction-diffusion simulator of Cu kinetics in CdTe solar cells to investigate its role in the observed device performance changes. Evolution of intrinsic and Cu-related defects in CdTe solar cell has been studied in time-space domain self-consistently with free carrier transport. The simulation successfully predicts decelerating reductions of device performance for open-circuit stress and steadier reductions for short-circuit stress under elevated temperature, in agreement with experimental findings. The simulation results indicate that the movement of Cu interstitials could be responsible for such changes. Although 1D simulation has intrinsic limitations when applied to polycrystalline films, the results presented here imply that the 1D approach is still suitable in better understanding of the performance and metastabilities of CdTe photovoltaic device.

Original language	English (US)
Title of host publication	2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Print)	9781479979448
DOIs	https://doi.org/10.1109/PVSC.2015.7355706
State	Published - Dec 14 2015
Event	42nd IEEE Photovoltaic Specialist Conference, PVSC 2015 - New Orleans, United States Duration: Jun 14 2015 → Jun 19 2015

Other

Other	42nd IEEE Photovoltaic Specialist Conference, PVSC 2015
Country/Territory	United States
City	New Orleans
Period	6/14/15 → 6/19/15

Keywords

cadmium compounds
copper
numerical simulation
photovoltaic cells
semiconductor device reliability

ASJC Scopus subject areas

Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials

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10.1109/PVSC.2015.7355706

Cite this

Guo, D, Akis, R, Brinkman, D, Moore, A, Fang, T, Sankin, I, Vasileska, D & Ringhofer, C 2015, Cu migration and its impact on the metastable behavior of CdTe solar cells. in 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015., 7355706, Institute of Electrical and Electronics Engineers Inc., 42nd IEEE Photovoltaic Specialist Conference, PVSC 2015, New Orleans, United States, 6/14/15. https://doi.org/10.1109/PVSC.2015.7355706

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title = "Cu migration and its impact on the metastable behavior of CdTe solar cells",

abstract = "In this work we report on development of a 1D reaction-diffusion simulator of Cu kinetics in CdTe solar cells to investigate its role in the observed device performance changes. Evolution of intrinsic and Cu-related defects in CdTe solar cell has been studied in time-space domain self-consistently with free carrier transport. The simulation successfully predicts decelerating reductions of device performance for open-circuit stress and steadier reductions for short-circuit stress under elevated temperature, in agreement with experimental findings. The simulation results indicate that the movement of Cu interstitials could be responsible for such changes. Although 1D simulation has intrinsic limitations when applied to polycrystalline films, the results presented here imply that the 1D approach is still suitable in better understanding of the performance and metastabilities of CdTe photovoltaic device.",

keywords = "cadmium compounds, copper, numerical simulation, photovoltaic cells, semiconductor device reliability",

author = "D. Guo and R. Akis and D. Brinkman and A. Moore and T. Fang and I. Sankin and Dragica Vasileska and Christian Ringhofer",

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AU - Guo, D.

AU - Akis, R.

AU - Brinkman, D.

AU - Moore, A.

AU - Fang, T.

AU - Sankin, I.

AU - Vasileska, Dragica

AU - Ringhofer, Christian

PY - 2015/12/14

Y1 - 2015/12/14

N2 - In this work we report on development of a 1D reaction-diffusion simulator of Cu kinetics in CdTe solar cells to investigate its role in the observed device performance changes. Evolution of intrinsic and Cu-related defects in CdTe solar cell has been studied in time-space domain self-consistently with free carrier transport. The simulation successfully predicts decelerating reductions of device performance for open-circuit stress and steadier reductions for short-circuit stress under elevated temperature, in agreement with experimental findings. The simulation results indicate that the movement of Cu interstitials could be responsible for such changes. Although 1D simulation has intrinsic limitations when applied to polycrystalline films, the results presented here imply that the 1D approach is still suitable in better understanding of the performance and metastabilities of CdTe photovoltaic device.

AB - In this work we report on development of a 1D reaction-diffusion simulator of Cu kinetics in CdTe solar cells to investigate its role in the observed device performance changes. Evolution of intrinsic and Cu-related defects in CdTe solar cell has been studied in time-space domain self-consistently with free carrier transport. The simulation successfully predicts decelerating reductions of device performance for open-circuit stress and steadier reductions for short-circuit stress under elevated temperature, in agreement with experimental findings. The simulation results indicate that the movement of Cu interstitials could be responsible for such changes. Although 1D simulation has intrinsic limitations when applied to polycrystalline films, the results presented here imply that the 1D approach is still suitable in better understanding of the performance and metastabilities of CdTe photovoltaic device.

KW - cadmium compounds

KW - copper

KW - numerical simulation

KW - photovoltaic cells

KW - semiconductor device reliability

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BT - 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 42nd IEEE Photovoltaic Specialist Conference, PVSC 2015

Y2 - 14 June 2015 through 19 June 2015

ER -

Cu migration and its impact on the metastable behavior of CdTe solar cells

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Keywords

ASJC Scopus subject areas

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