Photoluminescent characteristics of lithium-doped zinc oxide films deposited by spray pyrolysis

A. Ortíz, C. Falcony, J. A. Hernández, M. Garcia, J. C. Alonso

Research output: Contribution to journalArticle

78 Citations (Scopus)

Abstract

Lithium-doped and undoped zinc oxide photoluminescent films prepared by the spray pyrolysis technique have been studied. The photoluminescent emission for the Li-doped films is formed by a broad band composed of the overlapping of four peaks at 508, 590, 604 and at ∼ 810 nm; undoped films present the well known blue-green emission characteristic of ZnO. The photoluminescent excitation spectra indicate that the excitation mechanism is primarily due to electron-hole pair generation across the ZnO energy bandgap, although the excitation spectra also show two smaller peaks at 508 and 524 nm, which seem to be related to an electron excitation to localized states within the bandgap. The decay time measurements of the photoluminescence show that the lifetime of the luminescence emission is of the order of 187 ns. The behavior of the luminescent intensity with temperature shows an activation energy of 0.057 eV for competitive non-radiative transitions. © 1997 Elsevier Science S.A.
Original languageAmerican English
Pages (from-to)103-107
Number of pages92
JournalThin Solid Films
DOIs
StatePublished - 30 Jan 1997
Externally publishedYes

Fingerprint

Zinc Oxide
Spray pyrolysis
Zinc oxide
Lithium
zinc oxides
Oxide films
pyrolysis
sprayers
oxide films
Energy gap
lithium
Electrons
Luminescence
Time measurement
excitation
Photoluminescence
Activation energy
Temperature
luminous intensity
time measurement

Cite this

Ortíz, A. ; Falcony, C. ; Hernández, J. A. ; Garcia, M. ; Alonso, J. C. / Photoluminescent characteristics of lithium-doped zinc oxide films deposited by spray pyrolysis. In: Thin Solid Films. 1997 ; pp. 103-107.
@article{634508de1a3943f99c756b92266b8dfc,
title = "Photoluminescent characteristics of lithium-doped zinc oxide films deposited by spray pyrolysis",
abstract = "Lithium-doped and undoped zinc oxide photoluminescent films prepared by the spray pyrolysis technique have been studied. The photoluminescent emission for the Li-doped films is formed by a broad band composed of the overlapping of four peaks at 508, 590, 604 and at ∼ 810 nm; undoped films present the well known blue-green emission characteristic of ZnO. The photoluminescent excitation spectra indicate that the excitation mechanism is primarily due to electron-hole pair generation across the ZnO energy bandgap, although the excitation spectra also show two smaller peaks at 508 and 524 nm, which seem to be related to an electron excitation to localized states within the bandgap. The decay time measurements of the photoluminescence show that the lifetime of the luminescence emission is of the order of 187 ns. The behavior of the luminescent intensity with temperature shows an activation energy of 0.057 eV for competitive non-radiative transitions. {\circledC} 1997 Elsevier Science S.A.",
author = "A. Ort{\'i}z and C. Falcony and Hern{\'a}ndez, {J. A.} and M. Garcia and Alonso, {J. C.}",
year = "1997",
month = "1",
day = "30",
doi = "10.1016/S0040-6090(96)09114-6",
language = "American English",
pages = "103--107",
journal = "Thin Solid Films",
issn = "0040-6090",
publisher = "Elsevier",

}

Photoluminescent characteristics of lithium-doped zinc oxide films deposited by spray pyrolysis. / Ortíz, A.; Falcony, C.; Hernández, J. A.; Garcia, M.; Alonso, J. C.

In: Thin Solid Films, 30.01.1997, p. 103-107.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Photoluminescent characteristics of lithium-doped zinc oxide films deposited by spray pyrolysis

AU - Ortíz, A.

AU - Falcony, C.

AU - Hernández, J. A.

AU - Garcia, M.

AU - Alonso, J. C.

PY - 1997/1/30

Y1 - 1997/1/30

N2 - Lithium-doped and undoped zinc oxide photoluminescent films prepared by the spray pyrolysis technique have been studied. The photoluminescent emission for the Li-doped films is formed by a broad band composed of the overlapping of four peaks at 508, 590, 604 and at ∼ 810 nm; undoped films present the well known blue-green emission characteristic of ZnO. The photoluminescent excitation spectra indicate that the excitation mechanism is primarily due to electron-hole pair generation across the ZnO energy bandgap, although the excitation spectra also show two smaller peaks at 508 and 524 nm, which seem to be related to an electron excitation to localized states within the bandgap. The decay time measurements of the photoluminescence show that the lifetime of the luminescence emission is of the order of 187 ns. The behavior of the luminescent intensity with temperature shows an activation energy of 0.057 eV for competitive non-radiative transitions. © 1997 Elsevier Science S.A.

AB - Lithium-doped and undoped zinc oxide photoluminescent films prepared by the spray pyrolysis technique have been studied. The photoluminescent emission for the Li-doped films is formed by a broad band composed of the overlapping of four peaks at 508, 590, 604 and at ∼ 810 nm; undoped films present the well known blue-green emission characteristic of ZnO. The photoluminescent excitation spectra indicate that the excitation mechanism is primarily due to electron-hole pair generation across the ZnO energy bandgap, although the excitation spectra also show two smaller peaks at 508 and 524 nm, which seem to be related to an electron excitation to localized states within the bandgap. The decay time measurements of the photoluminescence show that the lifetime of the luminescence emission is of the order of 187 ns. The behavior of the luminescent intensity with temperature shows an activation energy of 0.057 eV for competitive non-radiative transitions. © 1997 Elsevier Science S.A.

UR - https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0030643255&origin=inward

UR - https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=0030643255&origin=inward

U2 - 10.1016/S0040-6090(96)09114-6

DO - 10.1016/S0040-6090(96)09114-6

M3 - Article

SP - 103

EP - 107

JO - Thin Solid Films

JF - Thin Solid Films

SN - 0040-6090

ER -