Red to green rainbow photoluminescence from unoxidized silicon nanocrystallites

Zain Yamani; Sahel Ashhab; Amman Nayfeh; W. Howard Thompson; Munir Nayfeh

doi:10.1063/1.367313

Red to green rainbow photoluminescence from unoxidized silicon nanocrystallites

Zain Yamani, Sahel Ashhab, Amman Nayfeh, W. Howard Thompson, Munir Nayfeh

Physics

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

Abstract

We prepared luminescent silicon by incorporating H₂O₂ in the anodizing process. Under UV excitation, our samples appear reddish, orangish, yellowish to greenish as the electrolyte-air interface at the meniscus is approached. Under high current anodization, the emission becomes broad but unstable. The time characteristics of all the emission regions are in the range of 1-10 μs. The results are consistent with a significant reduction of crystallite sizes, and may be explained via novel Si - Si dimer surface states that are induced by quantum confinement.

Original language	English (US)
Pages (from-to)	3929-3931
Number of pages	3
Journal	Journal of Applied Physics
Volume	83
Issue number	7
DOIs	https://doi.org/10.1063/1.367313
State	Published - 1998

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Physics and Astronomy(all)

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10.1063/1.367313

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title = "Red to green rainbow photoluminescence from unoxidized silicon nanocrystallites",

abstract = "We prepared luminescent silicon by incorporating H2O2 in the anodizing process. Under UV excitation, our samples appear reddish, orangish, yellowish to greenish as the electrolyte-air interface at the meniscus is approached. Under high current anodization, the emission becomes broad but unstable. The time characteristics of all the emission regions are in the range of 1-10 μs. The results are consistent with a significant reduction of crystallite sizes, and may be explained via novel Si - Si dimer surface states that are induced by quantum confinement.",

author = "Zain Yamani and Sahel Ashhab and Amman Nayfeh and Thompson, {W. Howard} and Munir Nayfeh",

year = "1998",

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volume = "83",

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journal = "Journal of Applied Physics",

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T1 - Red to green rainbow photoluminescence from unoxidized silicon nanocrystallites

AU - Yamani, Zain

AU - Ashhab, Sahel

AU - Nayfeh, Amman

AU - Thompson, W. Howard

AU - Nayfeh, Munir

PY - 1998

Y1 - 1998

N2 - We prepared luminescent silicon by incorporating H2O2 in the anodizing process. Under UV excitation, our samples appear reddish, orangish, yellowish to greenish as the electrolyte-air interface at the meniscus is approached. Under high current anodization, the emission becomes broad but unstable. The time characteristics of all the emission regions are in the range of 1-10 μs. The results are consistent with a significant reduction of crystallite sizes, and may be explained via novel Si - Si dimer surface states that are induced by quantum confinement.

AB - We prepared luminescent silicon by incorporating H2O2 in the anodizing process. Under UV excitation, our samples appear reddish, orangish, yellowish to greenish as the electrolyte-air interface at the meniscus is approached. Under high current anodization, the emission becomes broad but unstable. The time characteristics of all the emission regions are in the range of 1-10 μs. The results are consistent with a significant reduction of crystallite sizes, and may be explained via novel Si - Si dimer surface states that are induced by quantum confinement.

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JF - Journal of Applied Physics

IS - 7

ER -

Red to green rainbow photoluminescence from unoxidized silicon nanocrystallites

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