Optical properties of highly luminescent zinc oxide tetrapod powders

A. M. Fischer; S. Srinivasan; R. Garcia; Fernando Ponce; S. E. Guao; B. C. Di Lello; F. J. Moura; I. G. Solórzano

doi:10.1063/1.2787875

Optical properties of highly luminescent zinc oxide tetrapod powders

A. M. Fischer, S. Srinivasan, R. Garcia, Fernando Ponce, S. E. Guao, B. C. Di Lello, F. J. Moura, I. G. Solórzano

Physics

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

22 Scopus citations

Abstract

Zinc oxide tetrapod powders with high luminescent characteristics have been grown by simple evaporation and direct oxidation of zinc. Their structural and optical properties have been studied by transmission electron microscopy and by cathodoluminescence. The legs of the tetrapods have a pure hexagonal structure and form an arrowhead joint at the center. The tetrapod legs exhibit strong band edge and weak green luminescence. Monochromatic cathodoluminescence images show that the band-edge emission originates from the bulk of the legs, while the green emission emanates from the surface, indicative of it being related to oxygen vacancies. Low temperature cathodoluminescence shows a direct correlation of near-band-edge emission with specific sites within the structure.

Original language	English (US)
Article number	121905
Journal	Applied Physics Letters
Volume	91
Issue number	12
DOIs	https://doi.org/10.1063/1.2787875
State	Published - 2007

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.2787875

Cite this

@article{d4dd21da174141c68e411c9a069c0088,

title = "Optical properties of highly luminescent zinc oxide tetrapod powders",

abstract = "Zinc oxide tetrapod powders with high luminescent characteristics have been grown by simple evaporation and direct oxidation of zinc. Their structural and optical properties have been studied by transmission electron microscopy and by cathodoluminescence. The legs of the tetrapods have a pure hexagonal structure and form an arrowhead joint at the center. The tetrapod legs exhibit strong band edge and weak green luminescence. Monochromatic cathodoluminescence images show that the band-edge emission originates from the bulk of the legs, while the green emission emanates from the surface, indicative of it being related to oxygen vacancies. Low temperature cathodoluminescence shows a direct correlation of near-band-edge emission with specific sites within the structure.",

author = "Fischer, {A. M.} and S. Srinivasan and R. Garcia and Fernando Ponce and Guao, {S. E.} and {Di Lello}, {B. C.} and Moura, {F. J.} and Sol{\'o}rzano, {I. G.}",

note = "Funding Information: The authors gratefully acknowledge that the research at ASU was supported by a grant from Nichia Corporation. Research at PUC-Rio was supported by a grant from CNPq-Brazil.",

year = "2007",

doi = "10.1063/1.2787875",

language = "English (US)",

volume = "91",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "12",

}

TY - JOUR

T1 - Optical properties of highly luminescent zinc oxide tetrapod powders

AU - Fischer, A. M.

AU - Srinivasan, S.

AU - Garcia, R.

AU - Ponce, Fernando

AU - Guao, S. E.

AU - Di Lello, B. C.

AU - Moura, F. J.

AU - Solórzano, I. G.

N1 - Funding Information: The authors gratefully acknowledge that the research at ASU was supported by a grant from Nichia Corporation. Research at PUC-Rio was supported by a grant from CNPq-Brazil.

PY - 2007

Y1 - 2007

N2 - Zinc oxide tetrapod powders with high luminescent characteristics have been grown by simple evaporation and direct oxidation of zinc. Their structural and optical properties have been studied by transmission electron microscopy and by cathodoluminescence. The legs of the tetrapods have a pure hexagonal structure and form an arrowhead joint at the center. The tetrapod legs exhibit strong band edge and weak green luminescence. Monochromatic cathodoluminescence images show that the band-edge emission originates from the bulk of the legs, while the green emission emanates from the surface, indicative of it being related to oxygen vacancies. Low temperature cathodoluminescence shows a direct correlation of near-band-edge emission with specific sites within the structure.

AB - Zinc oxide tetrapod powders with high luminescent characteristics have been grown by simple evaporation and direct oxidation of zinc. Their structural and optical properties have been studied by transmission electron microscopy and by cathodoluminescence. The legs of the tetrapods have a pure hexagonal structure and form an arrowhead joint at the center. The tetrapod legs exhibit strong band edge and weak green luminescence. Monochromatic cathodoluminescence images show that the band-edge emission originates from the bulk of the legs, while the green emission emanates from the surface, indicative of it being related to oxygen vacancies. Low temperature cathodoluminescence shows a direct correlation of near-band-edge emission with specific sites within the structure.

UR - http://www.scopus.com/inward/record.url?scp=34648822107&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34648822107&partnerID=8YFLogxK

U2 - 10.1063/1.2787875

DO - 10.1063/1.2787875

M3 - Article

AN - SCOPUS:34648822107

SN - 0003-6951

VL - 91

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 12

M1 - 121905

ER -

Optical properties of highly luminescent zinc oxide tetrapod powders

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this