Excited states of the free excitons in CuInSe2 single crystals

M. V. Yakushev; F. Luckert; C. Faugeras; A. V. Karotki; A. V. Mudryi; R. W. Martin

doi:10.1063/1.3502603

Excited states of the free excitons in CuInSe2 single crystals

M. V. Yakushev, F. Luckert, C. Faugeras, A. V. Karotki, A. V. Mudryi, R. W. Martin

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Abstract

High-quality CuInSe2 single crystals were studied using polarization resolved photoluminescence (PL) and magnetophotoluminescence (MPL). The emission lines related to the first (n=2) excited states for the A and B free excitons were observed in the PL and MPL spectra at 1.0481 meV and 1.0516 meV, respectively. The spectral positions of these lines were used to estimate accurate values for the A and B exciton binding energies (8.5 meV and 8.4 meV, respectively), Bohr radii (7.5 nm), band gaps (E-g(A)=1.050 eV and E-g(B)=1.054 eV), and the static dielectric constant (11.3) assuming the hydrogenic model.

Original language	English
Article number	152110
Number of pages	3
Journal	Applied Physics Letters
Volume	97
Issue number	15
DOIs	https://doi.org/10.1063/1.3502603
Publication status	Published - 11 Oct 2010

Keywords

radiative recombination
optical properties
crystals
excited states
free excitons
CulnSe2
single crystals

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10.1063/1.3502603

APL_97_152110_CuInSe_excitedFinal published version, 507 KB

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title = "Excited states of the free excitons in CuInSe2 single crystals",

abstract = "High-quality CuInSe2 single crystals were studied using polarization resolved photoluminescence (PL) and magnetophotoluminescence (MPL). The emission lines related to the first (n=2) excited states for the A and B free excitons were observed in the PL and MPL spectra at 1.0481 meV and 1.0516 meV, respectively. The spectral positions of these lines were used to estimate accurate values for the A and B exciton binding energies (8.5 meV and 8.4 meV, respectively), Bohr radii (7.5 nm), band gaps (E-g(A)=1.050 eV and E-g(B)=1.054 eV), and the static dielectric constant (11.3) assuming the hydrogenic model.",

keywords = "radiative recombination, optical properties, crystals, excited states, free excitons, CulnSe2, single crystals",

author = "Yakushev, {M. V.} and F. Luckert and C. Faugeras and Karotki, {A. V.} and Mudryi, {A. V.} and Martin, {R. W.}",

year = "2010",

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doi = "10.1063/1.3502603",

language = "English",

volume = "97",

journal = "Applied Physics Letters",

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TY - JOUR

T1 - Excited states of the free excitons in CuInSe2 single crystals

AU - Yakushev, M. V.

AU - Luckert, F.

AU - Faugeras, C.

AU - Karotki, A. V.

AU - Mudryi, A. V.

AU - Martin, R. W.

PY - 2010/10/11

Y1 - 2010/10/11

N2 - High-quality CuInSe2 single crystals were studied using polarization resolved photoluminescence (PL) and magnetophotoluminescence (MPL). The emission lines related to the first (n=2) excited states for the A and B free excitons were observed in the PL and MPL spectra at 1.0481 meV and 1.0516 meV, respectively. The spectral positions of these lines were used to estimate accurate values for the A and B exciton binding energies (8.5 meV and 8.4 meV, respectively), Bohr radii (7.5 nm), band gaps (E-g(A)=1.050 eV and E-g(B)=1.054 eV), and the static dielectric constant (11.3) assuming the hydrogenic model.

AB - High-quality CuInSe2 single crystals were studied using polarization resolved photoluminescence (PL) and magnetophotoluminescence (MPL). The emission lines related to the first (n=2) excited states for the A and B free excitons were observed in the PL and MPL spectra at 1.0481 meV and 1.0516 meV, respectively. The spectral positions of these lines were used to estimate accurate values for the A and B exciton binding energies (8.5 meV and 8.4 meV, respectively), Bohr radii (7.5 nm), band gaps (E-g(A)=1.050 eV and E-g(B)=1.054 eV), and the static dielectric constant (11.3) assuming the hydrogenic model.

KW - radiative recombination

KW - optical properties

KW - crystals

KW - excited states

KW - free excitons

KW - CulnSe2

KW - single crystals

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U2 - 10.1063/1.3502603

DO - 10.1063/1.3502603

M3 - Article

SN - 0003-6951

VL - 97

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 15

M1 - 152110

ER -

Excited states of the free excitons in CuInSe2 single crystals

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Keywords

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Magnetic Field - and Pressure - Optical Effects In CULNSE2 And CULNS2

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Excited states of the free excitons in CuInSe2 single crystals

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Magnetic Field - and Pressure - Optical Effects In CULNSE2 And CULNS2

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