Oxygen-vacancy and depth-dependent violet double-peak photoluminescence from ultrathin cuboid SnO 2 nanocrystals

L. Z. Liu; X. L. Wu; J. Q. Xu; T. H. Li; J. C. Shen; Paul K. Chu

doi:10.1063/1.3696044

Oxygen-vacancy and depth-dependent violet double-peak photoluminescence from ultrathin cuboid SnO ₂ nanocrystals

L. Z. Liu
, X. L. Wu
, J. Q. Xu
, T. H. Li
, J. C. Shen
, Paul K. Chu

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

64 Citations (Scopus)

Abstract

A double peak in the violet region between 360 and 400 nm is observed from the photoluminescence spectra acquired from cuboid SnO ₂ nanocrystals and the energy separation between the two subpeaks increases with nanocrystal size. The phenomenon arises from band edge recombination caused by different in-depth distributions of oxygen vacancies (OVs). Density functional theory calculations disclose that variations in the oxygen vacancies with depth introduce valence-band peak splitting leading to the observed splitting and shift of the double peak. © 2012 American Institute of Physics.

Original language	English
Article number	121903
Journal	Applied Physics Letters
Volume	100
Issue number	12
DOIs	https://doi.org/10.1063/1.3696044
Publication status	Published - 19 Mar 2012

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@article{a547ba8e7e9f4d30913230acbd453db0,

title = "Oxygen-vacancy and depth-dependent violet double-peak photoluminescence from ultrathin cuboid SnO 2 nanocrystals",

abstract = "A double peak in the violet region between 360 and 400 nm is observed from the photoluminescence spectra acquired from cuboid SnO 2 nanocrystals and the energy separation between the two subpeaks increases with nanocrystal size. The phenomenon arises from band edge recombination caused by different in-depth distributions of oxygen vacancies (OVs). Density functional theory calculations disclose that variations in the oxygen vacancies with depth introduce valence-band peak splitting leading to the observed splitting and shift of the double peak. {\textcopyright} 2012 American Institute of Physics.",

author = "Liu, \{L. Z.\} and Wu, \{X. L.\} and Xu, \{J. Q.\} and Li, \{T. H.\} and Shen, \{J. C.\} and Chu, \{Paul K.\}",

year = "2012",

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doi = "10.1063/1.3696044",

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volume = "100",

journal = "Applied Physics Letters",

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TY - JOUR

T1 - Oxygen-vacancy and depth-dependent violet double-peak photoluminescence from ultrathin cuboid SnO 2 nanocrystals

AU - Liu, L. Z.

AU - Wu, X. L.

AU - Xu, J. Q.

AU - Li, T. H.

AU - Shen, J. C.

AU - Chu, Paul K.

PY - 2012/3/19

Y1 - 2012/3/19

N2 - A double peak in the violet region between 360 and 400 nm is observed from the photoluminescence spectra acquired from cuboid SnO 2 nanocrystals and the energy separation between the two subpeaks increases with nanocrystal size. The phenomenon arises from band edge recombination caused by different in-depth distributions of oxygen vacancies (OVs). Density functional theory calculations disclose that variations in the oxygen vacancies with depth introduce valence-band peak splitting leading to the observed splitting and shift of the double peak. © 2012 American Institute of Physics.

AB - A double peak in the violet region between 360 and 400 nm is observed from the photoluminescence spectra acquired from cuboid SnO 2 nanocrystals and the energy separation between the two subpeaks increases with nanocrystal size. The phenomenon arises from band edge recombination caused by different in-depth distributions of oxygen vacancies (OVs). Density functional theory calculations disclose that variations in the oxygen vacancies with depth introduce valence-band peak splitting leading to the observed splitting and shift of the double peak. © 2012 American Institute of Physics.

UR - https://www.scopus.com/pages/publications/84859530385

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84859530385&origin=recordpage

U2 - 10.1063/1.3696044

DO - 10.1063/1.3696044

M3 - RGC 21 - Publication in refereed journal

SN - 0003-6951

VL - 100

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 12

M1 - 121903

ER -