Chemical and Electronic Surface Structure of 20%-Efficient Cu(in,Ga)Se2 Thin Film Solar Cell Absorbers

M. Bär; I. Repins; M. A. Contreras; L. Weinhardt; R. Noufi; C. Heske

doi:10.1063/1.3194153

Chemical and Electronic Surface Structure of 20%-Efficient Cu(in,Ga)Se2 Thin Film Solar Cell Absorbers

M. Bär, I. Repins, M. A. Contreras, L. Weinhardt, R. Noufi, C. Heske

Materials, Chemical, and Computational Science

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

69 Scopus Citations

Abstract

The chemical and electronic surface structure of 20%-efficient Cu (In,Ga) Se₂ thin film solar cell absorbers was investigated as a function of deposition process termination (i.e., ending the growth process in absence of either Ga or In). In addition to the expected In (Ga) enrichment, direct and inverse photoemission reveal a decreased Cu surface content and a larger surface band gap for the "In-terminated" absorber.

Original language	American English
Article number	Article No. 052106
Number of pages	3
Journal	Applied Physics Letters
Volume	95
Issue number	5
DOIs	https://doi.org/10.1063/1.3194153 https://doi.org/10.1063/1.3194153
State	Published - 2009

NREL Publication Number

NREL/JA-520-46620

Keywords

copper
photoemission
surface photoemission
surface structure
X-ray photoelectron spectroscopy

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title = "Chemical and Electronic Surface Structure of 20%-Efficient Cu(in,Ga)Se2 Thin Film Solar Cell Absorbers",

abstract = "The chemical and electronic surface structure of 20%-efficient Cu (In,Ga) Se2 thin film solar cell absorbers was investigated as a function of deposition process termination (i.e., ending the growth process in absence of either Ga or In). In addition to the expected In (Ga) enrichment, direct and inverse photoemission reveal a decreased Cu surface content and a larger surface band gap for the {"}In-terminated{"} absorber.",

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author = "M. B{\"a}r and I. Repins and Contreras, {M. A.} and L. Weinhardt and R. Noufi and C. Heske",

year = "2009",

doi = "10.1063/1.3194153",

language = "American English",

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T1 - Chemical and Electronic Surface Structure of 20%-Efficient Cu(in,Ga)Se2 Thin Film Solar Cell Absorbers

AU - Bär, M.

AU - Repins, I.

AU - Contreras, M. A.

AU - Weinhardt, L.

AU - Noufi, R.

AU - Heske, C.

PY - 2009

Y1 - 2009

N2 - The chemical and electronic surface structure of 20%-efficient Cu (In,Ga) Se2 thin film solar cell absorbers was investigated as a function of deposition process termination (i.e., ending the growth process in absence of either Ga or In). In addition to the expected In (Ga) enrichment, direct and inverse photoemission reveal a decreased Cu surface content and a larger surface band gap for the "In-terminated" absorber.

AB - The chemical and electronic surface structure of 20%-efficient Cu (In,Ga) Se2 thin film solar cell absorbers was investigated as a function of deposition process termination (i.e., ending the growth process in absence of either Ga or In). In addition to the expected In (Ga) enrichment, direct and inverse photoemission reveal a decreased Cu surface content and a larger surface band gap for the "In-terminated" absorber.

KW - copper

KW - photoemission

KW - surface photoemission

KW - surface structure

KW - X-ray photoelectron spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=68349150684&partnerID=8YFLogxK

U2 - 10.1063/1.3194153

DO - 10.1063/1.3194153

M3 - Article

AN - SCOPUS:68349150684

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 5

M1 - Article No. 052106

ER -

Chemical and Electronic Surface Structure of 20%-Efficient Cu(in,Ga)Se2 Thin Film Solar Cell Absorbers

Abstract

NREL Publication Number

Keywords

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