Micrometric investigation of external quantum efficiency in microcrystalline CuInGa(S,Se)2 solar cells

L. Lombez; D. Ory; M. Paire; A. Delamarre; G. El Hajje; J. F. Guillemoles

doi:10.1016/j.tsf.2014.06.041

Micrometric investigation of external quantum efficiency in microcrystalline CuInGa(S,Se)₂ solar cells

L. Lombez
, D. Ory
, M. Paire
, A. Delamarre
, G. El Hajje
, J. F. Guillemoles

Institut Photovoltaïque d'Ile-de-France

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

5 Citations (Scopus)

Abstract

We present in this paper small scale spatial fluctuations of the spectral response of CuInGa(S,Se)₂ polycrystalline solar cell. The experimental method is based on light beam induced current cartographies under different excitation wavelengths. From those measurements we can map minority carrier diffusion length Ln over the cell with a spatial resolution of about 2 μm. Spatial variations of Ln are evidenced, which result in a standard deviation of around 130 nm. The experiment also evidences spatial fluctuations of the external quantum efficiency that can arise from surface recombinations.

Original language	English
Pages (from-to)	32-36
Number of pages	5
Journal	Thin Solid Films
Volume	565
DOIs	https://doi.org/10.1016/j.tsf.2014.06.041
Publication status	Published - 28 Aug 2014

Keywords

Copper indium gallium selenides
Diffusion length
External quantum efficiency
Micrometric
Photovoltaics
Supercontinuum

Access to Document

10.1016/j.tsf.2014.06.041

Cite this

@article{8d22bd387c894274b3768d8acdbdb8c2,

title = "Micrometric investigation of external quantum efficiency in microcrystalline CuInGa(S,Se)2 solar cells",

abstract = "We present in this paper small scale spatial fluctuations of the spectral response of CuInGa(S,Se)2 polycrystalline solar cell. The experimental method is based on light beam induced current cartographies under different excitation wavelengths. From those measurements we can map minority carrier diffusion length Ln over the cell with a spatial resolution of about 2 μm. Spatial variations of Ln are evidenced, which result in a standard deviation of around 130 nm. The experiment also evidences spatial fluctuations of the external quantum efficiency that can arise from surface recombinations.",

keywords = "Copper indium gallium selenides, Diffusion length, External quantum efficiency, Micrometric, Photovoltaics, Supercontinuum",

author = "L. Lombez and D. Ory and M. Paire and A. Delamarre and \{El Hajje\}, G. and Guillemoles, \{J. F.\}",

year = "2014",

month = aug,

day = "28",

doi = "10.1016/j.tsf.2014.06.041",

language = "English",

volume = "565",

pages = "32--36",

journal = "Thin Solid Films",

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TY - JOUR

T1 - Micrometric investigation of external quantum efficiency in microcrystalline CuInGa(S,Se)2 solar cells

AU - Lombez, L.

AU - Ory, D.

AU - Paire, M.

AU - Delamarre, A.

AU - El Hajje, G.

AU - Guillemoles, J. F.

PY - 2014/8/28

Y1 - 2014/8/28

N2 - We present in this paper small scale spatial fluctuations of the spectral response of CuInGa(S,Se)2 polycrystalline solar cell. The experimental method is based on light beam induced current cartographies under different excitation wavelengths. From those measurements we can map minority carrier diffusion length Ln over the cell with a spatial resolution of about 2 μm. Spatial variations of Ln are evidenced, which result in a standard deviation of around 130 nm. The experiment also evidences spatial fluctuations of the external quantum efficiency that can arise from surface recombinations.

AB - We present in this paper small scale spatial fluctuations of the spectral response of CuInGa(S,Se)2 polycrystalline solar cell. The experimental method is based on light beam induced current cartographies under different excitation wavelengths. From those measurements we can map minority carrier diffusion length Ln over the cell with a spatial resolution of about 2 μm. Spatial variations of Ln are evidenced, which result in a standard deviation of around 130 nm. The experiment also evidences spatial fluctuations of the external quantum efficiency that can arise from surface recombinations.

KW - Copper indium gallium selenides

KW - Diffusion length

KW - External quantum efficiency

KW - Micrometric

KW - Photovoltaics

KW - Supercontinuum

U2 - 10.1016/j.tsf.2014.06.041

DO - 10.1016/j.tsf.2014.06.041

M3 - Article

AN - SCOPUS:84905719813

SN - 0040-6090

VL - 565

SP - 32

EP - 36

JO - Thin Solid Films

JF - Thin Solid Films