Raman selection rule of surface optical phonon in ZnS nanobelts

Chih-Hsiang Ho; Purushothaman Varadhan; Hsin-Hua Wang; Cheng-Ying Chen; Xiaosheng Fang; Jr-Hau He

doi:10.1039/C5NR07268A

Raman selection rule of surface optical phonon in ZnS nanobelts

Chih-Hsiang Ho, Purushothaman Varadhan, Hsin-Hua Wang, Cheng-Ying Chen, Xiaosheng Fang, Jr-Hau He

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

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Abstract

We report Raman scattering results of high-quality wurtzite ZnS nanobelts (NBs) grown by chemical vapor deposition. In Raman spectrum, the ensembles of ZnS NBs exhibit first order phonon modes at 274 cm-1 and 350 cm-1, corresponding to A1/E1 transverse optical and A1/E1 longitudinal optical phonons, in addition with strong surface optical (SO) phonon mode at 329 cm-1. The existence of SO band is confirmed by its shift with different surrounding dielectric media. Polarization dependent Raman spectrum was performed on a single ZnS NB and for the first time SO phonon band has been detected on a single nanobelt. Different selection rules of SO phonon modeshown from their corresponding E1/A1 phonon modeswere attributed to the anisotropic translational symmetry breaking on the NB surface.

Original language	English (US)
Pages (from-to)	5954-5958
Number of pages	5
Journal	Nanoscale
Volume	8
Issue number	11
DOIs	https://doi.org/10.1039/C5NR07268A
State	Published - 2016

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https://repository.kaust.edu.sa/bitstream/10754/596970/1/c5nr07268a.pdf

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title = "Raman selection rule of surface optical phonon in ZnS nanobelts",

abstract = "We report Raman scattering results of high-quality wurtzite ZnS nanobelts (NBs) grown by chemical vapor deposition. In Raman spectrum, the ensembles of ZnS NBs exhibit first order phonon modes at 274 cm-1 and 350 cm-1, corresponding to A1/E1 transverse optical and A1/E1 longitudinal optical phonons, in addition with strong surface optical (SO) phonon mode at 329 cm-1. The existence of SO band is confirmed by its shift with different surrounding dielectric media. Polarization dependent Raman spectrum was performed on a single ZnS NB and for the first time SO phonon band has been detected on a single nanobelt. Different selection rules of SO phonon modeshown from their corresponding E1/A1 phonon modeswere attributed to the anisotropic translational symmetry breaking on the NB surface.",

author = "Chih-Hsiang Ho and Purushothaman Varadhan and Hsin-Hua Wang and Cheng-Ying Chen and Xiaosheng Fang and Jr-Hau He",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This research was supported by King Abdullah University of Science and Technology (KAUST) baseline funding.",

year = "2016",

doi = "10.1039/C5NR07268A",

language = "English (US)",

volume = "8",

pages = "5954--5958",

journal = "Nanoscale",

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publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - Raman selection rule of surface optical phonon in ZnS nanobelts

AU - Ho, Chih-Hsiang

AU - Varadhan, Purushothaman

AU - Wang, Hsin-Hua

AU - Chen, Cheng-Ying

AU - Fang, Xiaosheng

AU - He, Jr-Hau

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This research was supported by King Abdullah University of Science and Technology (KAUST) baseline funding.

PY - 2016

Y1 - 2016

N2 - We report Raman scattering results of high-quality wurtzite ZnS nanobelts (NBs) grown by chemical vapor deposition. In Raman spectrum, the ensembles of ZnS NBs exhibit first order phonon modes at 274 cm-1 and 350 cm-1, corresponding to A1/E1 transverse optical and A1/E1 longitudinal optical phonons, in addition with strong surface optical (SO) phonon mode at 329 cm-1. The existence of SO band is confirmed by its shift with different surrounding dielectric media. Polarization dependent Raman spectrum was performed on a single ZnS NB and for the first time SO phonon band has been detected on a single nanobelt. Different selection rules of SO phonon modeshown from their corresponding E1/A1 phonon modeswere attributed to the anisotropic translational symmetry breaking on the NB surface.

AB - We report Raman scattering results of high-quality wurtzite ZnS nanobelts (NBs) grown by chemical vapor deposition. In Raman spectrum, the ensembles of ZnS NBs exhibit first order phonon modes at 274 cm-1 and 350 cm-1, corresponding to A1/E1 transverse optical and A1/E1 longitudinal optical phonons, in addition with strong surface optical (SO) phonon mode at 329 cm-1. The existence of SO band is confirmed by its shift with different surrounding dielectric media. Polarization dependent Raman spectrum was performed on a single ZnS NB and for the first time SO phonon band has been detected on a single nanobelt. Different selection rules of SO phonon modeshown from their corresponding E1/A1 phonon modeswere attributed to the anisotropic translational symmetry breaking on the NB surface.

UR - http://hdl.handle.net/10754/596970

UR - http://pubs.rsc.org/en/Content/ArticleLanding/2016/NR/C5NR07268A

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U2 - 10.1039/C5NR07268A

DO - 10.1039/C5NR07268A

M3 - Article

C2 - 26924069

SN - 2040-3364

VL - 8

SP - 5954

EP - 5958

JO - Nanoscale

JF - Nanoscale

IS - 11

ER -

Raman selection rule of surface optical phonon in ZnS nanobelts

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