Study of excitonic emission in highly faceted ZnO rods

Wai Ming Kwok; A. B. Djurišić; Y. H. Leung; W. K. Chan; D. L. Phillips; H. Y. Chen; C. L. Wu; S. Gwo; M. H. Xie

doi:10.1016/j.cplett.2005.06.116

Study of excitonic emission in highly faceted ZnO rods

Wai Ming Kwok, A. B. Djurišić, Y. H. Leung, W. K. Chan, D. L. Phillips, H. Y. Chen, C. L. Wu, S. Gwo, M. H. Xie

Research output: Journal article publication › Journal article › Academic research › peer-review

29 Citations (Scopus)

Abstract

We report a detailed photoluminescence study of ZnO rods which exhibit 18 side surfaces. The photoluminescence studies reveal excellent optical quality of the rods, comparable to that of thin films in spite of their large surface area. The low-temperature PL spectra are dominated by a narrow and very intense bound exciton emission. Time resolved PL results show very long decay time of spontaneous emission, with the time constants of biexponential decay equal to 116 ps and 1.2 ns. The stimulated emission spectra reveal very narrow lasing modes with widths of 0.4-0.5 nm and decay times of 4-5 ps.

Original language	English
Pages (from-to)	141-144
Number of pages	4
Journal	Chemical Physics Letters
Volume	412
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2005.06.116
Publication status	Published - 25 Aug 2005
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1016/j.cplett.2005.06.116

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title = "Study of excitonic emission in highly faceted ZnO rods",

abstract = "We report a detailed photoluminescence study of ZnO rods which exhibit 18 side surfaces. The photoluminescence studies reveal excellent optical quality of the rods, comparable to that of thin films in spite of their large surface area. The low-temperature PL spectra are dominated by a narrow and very intense bound exciton emission. Time resolved PL results show very long decay time of spontaneous emission, with the time constants of biexponential decay equal to 116 ps and 1.2 ns. The stimulated emission spectra reveal very narrow lasing modes with widths of 0.4-0.5 nm and decay times of 4-5 ps.",

author = "Kwok, {Wai Ming} and Djuri{\v s}i{\'c}, {A. B.} and Leung, {Y. H.} and Chan, {W. K.} and Phillips, {D. L.} and Chen, {H. Y.} and Wu, {C. L.} and S. Gwo and Xie, {M. H.}",

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T1 - Study of excitonic emission in highly faceted ZnO rods

AU - Kwok, Wai Ming

AU - Djurišić, A. B.

AU - Leung, Y. H.

AU - Chan, W. K.

AU - Phillips, D. L.

AU - Chen, H. Y.

AU - Wu, C. L.

AU - Gwo, S.

AU - Xie, M. H.

PY - 2005/8/25

Y1 - 2005/8/25

N2 - We report a detailed photoluminescence study of ZnO rods which exhibit 18 side surfaces. The photoluminescence studies reveal excellent optical quality of the rods, comparable to that of thin films in spite of their large surface area. The low-temperature PL spectra are dominated by a narrow and very intense bound exciton emission. Time resolved PL results show very long decay time of spontaneous emission, with the time constants of biexponential decay equal to 116 ps and 1.2 ns. The stimulated emission spectra reveal very narrow lasing modes with widths of 0.4-0.5 nm and decay times of 4-5 ps.

AB - We report a detailed photoluminescence study of ZnO rods which exhibit 18 side surfaces. The photoluminescence studies reveal excellent optical quality of the rods, comparable to that of thin films in spite of their large surface area. The low-temperature PL spectra are dominated by a narrow and very intense bound exciton emission. Time resolved PL results show very long decay time of spontaneous emission, with the time constants of biexponential decay equal to 116 ps and 1.2 ns. The stimulated emission spectra reveal very narrow lasing modes with widths of 0.4-0.5 nm and decay times of 4-5 ps.

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DO - 10.1016/j.cplett.2005.06.116

M3 - Journal article

SN - 0009-2614

VL - 412

SP - 141

EP - 144

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -

Study of excitonic emission in highly faceted ZnO rods

Abstract

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