Optical Absorption and Electrical Conductivity in Amorphous In-Zn-O: A New TCO for CIGS PV

J. D. Perkins; T. Gennett; M. F.A.M. Van Hest; L. M. Gedvilas; D. S. Ginley

doi:10.1109/PVSC.2009.5411220

Optical Absorption and Electrical Conductivity in Amorphous In-Zn-O: A New TCO for CIGS PV

J. D. Perkins, T. Gennett, M. F.A.M. Van Hest, L. M. Gedvilas, D. S. Ginley

Materials, Chemical, and Computational Science

National Renewable Energy Laboratory

Research output: Contribution to conference › Paper › peer-review

5 Scopus Citations

Abstract

We report the coupled optical and electrical properties of a-IZO films as a function of both the metals composition and the %O₂ in the Ar/O ₂ sputter gas mix. In particular, a-IZO films with conductivity σ > 2000 S/cm can be grown for a broad range of metals compositions (60 to 85 at.% In) as long as the corresponding optimal oxygen level is used in the deposition. The amount of oxygen required increases with increasing indium content. When too much oxygen is used, the a-IZO remains clear but the conductivity is reduced due to a decreased carrier concentration. Whereas, when too little oxygen is used, the conductivity is reduced due to decreased electron mobility and there is a concurrent increase in the optical absorption from 400 to 1000 nm which renders the oxygen deficient a-IZO samples gray.

Original language	American English
Pages	1141-1143
Number of pages	3
DOIs	https://doi.org/10.1109/PVSC.2009.5411220 https://doi.org/10.1109/PVSC.2009.5411220
State	Published - 2009
Event	2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009 - Philadelphia, PA, United States Duration: 7 Jun 2009 → 12 Jun 2009

Conference

Conference	2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009
Country/Territory	United States
City	Philadelphia, PA
Period	7/06/09 → 12/06/09

NREL Publication Number

NREL/CP-520-46099

Keywords

absorption
amorphous materials
argon
conductive films
conductivity
electron mobility
electron optics
indium
optical coupling
optical films

Access to Document

Cite this

Perkins, J. D., Gennett, T., Van Hest, M. F. A. M., Gedvilas, L. M., & Ginley, D. S. (2009). Optical Absorption and Electrical Conductivity in Amorphous In-Zn-O: A New TCO for CIGS PV. 1141-1143. Paper presented at 2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009, Philadelphia, PA, United States. https://doi.org/10.1109/PVSC.2009.5411220, https://doi.org/10.1109/PVSC.2009.5411220

@conference{fe016d64dee14bbd9b221be0aa85096d,

title = "Optical Absorption and Electrical Conductivity in Amorphous In-Zn-O: A New TCO for CIGS PV",

abstract = "We report the coupled optical and electrical properties of a-IZO films as a function of both the metals composition and the %O2 in the Ar/O 2 sputter gas mix. In particular, a-IZO films with conductivity σ > 2000 S/cm can be grown for a broad range of metals compositions (60 to 85 at.% In) as long as the corresponding optimal oxygen level is used in the deposition. The amount of oxygen required increases with increasing indium content. When too much oxygen is used, the a-IZO remains clear but the conductivity is reduced due to a decreased carrier concentration. Whereas, when too little oxygen is used, the conductivity is reduced due to decreased electron mobility and there is a concurrent increase in the optical absorption from 400 to 1000 nm which renders the oxygen deficient a-IZO samples gray.",

keywords = "absorption, amorphous materials, argon, conductive films, conductivity, electron mobility, electron optics, indium, optical coupling, optical films",

author = "Perkins, {J. D.} and T. Gennett and {Van Hest}, {M. F.A.M.} and Gedvilas, {L. M.} and Ginley, {D. S.}",

year = "2009",

doi = "10.1109/PVSC.2009.5411220",

language = "American English",

pages = "1141--1143",

note = "2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009 ; Conference date: 07-06-2009 Through 12-06-2009",

}

Perkins, JD, Gennett, T, Van Hest, MFAM, Gedvilas, LM & Ginley, DS 2009, 'Optical Absorption and Electrical Conductivity in Amorphous In-Zn-O: A New TCO for CIGS PV', Paper presented at 2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009, Philadelphia, PA, United States, 7/06/09 - 12/06/09 pp. 1141-1143. https://doi.org/10.1109/PVSC.2009.5411220, https://doi.org/10.1109/PVSC.2009.5411220

TY - CONF

T1 - Optical Absorption and Electrical Conductivity in Amorphous In-Zn-O: A New TCO for CIGS PV

AU - Perkins, J. D.

AU - Gennett, T.

AU - Van Hest, M. F.A.M.

AU - Gedvilas, L. M.

AU - Ginley, D. S.

PY - 2009

Y1 - 2009

N2 - We report the coupled optical and electrical properties of a-IZO films as a function of both the metals composition and the %O2 in the Ar/O 2 sputter gas mix. In particular, a-IZO films with conductivity σ > 2000 S/cm can be grown for a broad range of metals compositions (60 to 85 at.% In) as long as the corresponding optimal oxygen level is used in the deposition. The amount of oxygen required increases with increasing indium content. When too much oxygen is used, the a-IZO remains clear but the conductivity is reduced due to a decreased carrier concentration. Whereas, when too little oxygen is used, the conductivity is reduced due to decreased electron mobility and there is a concurrent increase in the optical absorption from 400 to 1000 nm which renders the oxygen deficient a-IZO samples gray.

AB - We report the coupled optical and electrical properties of a-IZO films as a function of both the metals composition and the %O2 in the Ar/O 2 sputter gas mix. In particular, a-IZO films with conductivity σ > 2000 S/cm can be grown for a broad range of metals compositions (60 to 85 at.% In) as long as the corresponding optimal oxygen level is used in the deposition. The amount of oxygen required increases with increasing indium content. When too much oxygen is used, the a-IZO remains clear but the conductivity is reduced due to a decreased carrier concentration. Whereas, when too little oxygen is used, the conductivity is reduced due to decreased electron mobility and there is a concurrent increase in the optical absorption from 400 to 1000 nm which renders the oxygen deficient a-IZO samples gray.

KW - absorption

KW - amorphous materials

KW - argon

KW - conductive films

KW - conductivity

KW - electron mobility

KW - electron optics

KW - indium

KW - optical coupling

KW - optical films

UR - http://www.scopus.com/inward/record.url?scp=77951590657&partnerID=8YFLogxK

U2 - 10.1109/PVSC.2009.5411220

DO - 10.1109/PVSC.2009.5411220

M3 - Paper

AN - SCOPUS:77951590657

SP - 1141

EP - 1143

T2 - 2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009

Y2 - 7 June 2009 through 12 June 2009

ER -

Optical Absorption and Electrical Conductivity in Amorphous In-Zn-O: A New TCO for CIGS PV

Abstract

Conference

NREL Publication Number

Keywords

Access to Document

Other files and links

Fingerprint

Cite this