Impact of sheet resistance on 2-D modeling of thin-film solar cells

Galymzhan T. Koishiyev; James R. Sites

doi:10.1016/j.solmat.2008.11.015

Impact of sheet resistance on 2-D modeling of thin-film solar cells

Galymzhan T. Koishiyev, James R. Sites

Research output: Contribution to journal › Article › peer-review

77 Citations (Scopus)

Abstract

A rigorous mathematical approach was used to find a relation between the transparent-conductive-oxide (TCO) sheet resistance ρ_S (Ω/□) of a thin-film solar cell and the parameter R (Ω) that describes the TCO resistance in a two-dimensional circuit model. Additionally, the mathematical relationship that connects experimentally derived series resistance R_S (Ω cm²) of the solar cell to the TCO sheet resistance ρ_S (Ω/□) and the bulk semiconductor resistivity ρ (Ω cm) was derived. It was found that the fill factor of the solar cell is governed by a reduced dimensionless TCO sheet resistance that depends only weakly on the type and quality of the solar cell. Parameters corresponding to thin-film Cu(In,Ga)Se₂, two-junction a-Si, and an ideal solar cell were used as concrete examples.

Original language	English
Pages (from-to)	350-354
Number of pages	5
Journal	Solar Energy Materials and Solar Cells
Volume	93
Issue number	3
DOIs	https://doi.org/10.1016/j.solmat.2008.11.015
Publication status	Published - Mar 2009
Externally published	Yes

Keywords

Modeling
Resistance
Series
Sheet
TCO
Thin film

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films

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10.1016/j.solmat.2008.11.015

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title = "Impact of sheet resistance on 2-D modeling of thin-film solar cells",

abstract = "A rigorous mathematical approach was used to find a relation between the transparent-conductive-oxide (TCO) sheet resistance ρS (Ω/□) of a thin-film solar cell and the parameter R (Ω) that describes the TCO resistance in a two-dimensional circuit model. Additionally, the mathematical relationship that connects experimentally derived series resistance RS (Ω cm2) of the solar cell to the TCO sheet resistance ρS (Ω/□) and the bulk semiconductor resistivity ρ (Ω cm) was derived. It was found that the fill factor of the solar cell is governed by a reduced dimensionless TCO sheet resistance that depends only weakly on the type and quality of the solar cell. Parameters corresponding to thin-film Cu(In,Ga)Se2, two-junction a-Si, and an ideal solar cell were used as concrete examples.",

keywords = "Modeling, Resistance, Series, Sheet, TCO, Thin film",

author = "Koishiyev, {Galymzhan T.} and Sites, {James R.}",

note = "Funding Information: Work reported here was supported by the US National Renewable Energy Laboratory.",

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doi = "10.1016/j.solmat.2008.11.015",

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T1 - Impact of sheet resistance on 2-D modeling of thin-film solar cells

AU - Koishiyev, Galymzhan T.

AU - Sites, James R.

N1 - Funding Information: Work reported here was supported by the US National Renewable Energy Laboratory.

PY - 2009/3

Y1 - 2009/3

N2 - A rigorous mathematical approach was used to find a relation between the transparent-conductive-oxide (TCO) sheet resistance ρS (Ω/□) of a thin-film solar cell and the parameter R (Ω) that describes the TCO resistance in a two-dimensional circuit model. Additionally, the mathematical relationship that connects experimentally derived series resistance RS (Ω cm2) of the solar cell to the TCO sheet resistance ρS (Ω/□) and the bulk semiconductor resistivity ρ (Ω cm) was derived. It was found that the fill factor of the solar cell is governed by a reduced dimensionless TCO sheet resistance that depends only weakly on the type and quality of the solar cell. Parameters corresponding to thin-film Cu(In,Ga)Se2, two-junction a-Si, and an ideal solar cell were used as concrete examples.

AB - A rigorous mathematical approach was used to find a relation between the transparent-conductive-oxide (TCO) sheet resistance ρS (Ω/□) of a thin-film solar cell and the parameter R (Ω) that describes the TCO resistance in a two-dimensional circuit model. Additionally, the mathematical relationship that connects experimentally derived series resistance RS (Ω cm2) of the solar cell to the TCO sheet resistance ρS (Ω/□) and the bulk semiconductor resistivity ρ (Ω cm) was derived. It was found that the fill factor of the solar cell is governed by a reduced dimensionless TCO sheet resistance that depends only weakly on the type and quality of the solar cell. Parameters corresponding to thin-film Cu(In,Ga)Se2, two-junction a-Si, and an ideal solar cell were used as concrete examples.

KW - Modeling

KW - Resistance

KW - Series

KW - Sheet

KW - TCO

KW - Thin film

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DO - 10.1016/j.solmat.2008.11.015

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JO - Solar Energy Materials and Solar Cells

JF - Solar Energy Materials and Solar Cells

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ER -

Impact of sheet resistance on 2-D modeling of thin-film solar cells

Abstract

Keywords

ASJC Scopus subject areas

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