Higher fullerene-coupled porous silicon systems with blue emission

S. S. Deng; X. L. Wu; S. H. Yang

doi:10.1016/j.actamat.2003.12.036

Higher fullerene-coupled porous silicon systems with blue emission

S. S. Deng, X. L. Wu^*, S. H. Yang

^*Corresponding author for this work

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

6 Citations (Scopus)

Abstract

Higher fullerenes (C₇₀, C₇₆, C₈₄, C ₉₄) were covalently coupled on porous Si (PS) to form fullerene-coupled PS systems. After stored in air for 3-13 months, a blue photoluminescence (PL) was observed in the range of 430-480 nm. PL excitation spectral examinations reveal that the photoexcited carriers are generated in the quantum confined nanocrystalline Si (nc-Si) cores, whereas radiative recombination occurs at the coupled nc-Si surface. Fourier-transform infrared absorption data disclose that the blue PL energy has a dependence on the oxygen content of nc-Si surface, indicating that the luminescent centers should be some oxygen-related defect states. Based on the annealing behavior of the blue PL peak in O₂ and N₂, we attribute the luminescent center to a pair of an oxygen vacancy and an interstitial oxygen, which also forms a peroxy linkage with an lattice oxygen.

Original language	English
Pages (from-to)	1953-1957
Number of pages	5
Journal	Acta Materialia
Volume	52
Issue number	7
DOIs	https://doi.org/10.1016/j.actamat.2003.12.036
Publication status	Published - 19 Apr 2004
Externally published	Yes

Keywords

Higher fullerence
Photoluminescence
Porous Si

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10.1016/j.actamat.2003.12.036

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title = "Higher fullerene-coupled porous silicon systems with blue emission",

abstract = "Higher fullerenes (C70, C76, C84, C 94) were covalently coupled on porous Si (PS) to form fullerene-coupled PS systems. After stored in air for 3-13 months, a blue photoluminescence (PL) was observed in the range of 430-480 nm. PL excitation spectral examinations reveal that the photoexcited carriers are generated in the quantum confined nanocrystalline Si (nc-Si) cores, whereas radiative recombination occurs at the coupled nc-Si surface. Fourier-transform infrared absorption data disclose that the blue PL energy has a dependence on the oxygen content of nc-Si surface, indicating that the luminescent centers should be some oxygen-related defect states. Based on the annealing behavior of the blue PL peak in O2 and N2, we attribute the luminescent center to a pair of an oxygen vacancy and an interstitial oxygen, which also forms a peroxy linkage with an lattice oxygen.",

keywords = "Higher fullerence, Photoluminescence, Porous Si",

author = "Deng, \{S. S.\} and Wu, \{X. L.\} and Yang, \{S. H.\}",

year = "2004",

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doi = "10.1016/j.actamat.2003.12.036",

language = "English",

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journal = "Acta Materialia",

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TY - JOUR

T1 - Higher fullerene-coupled porous silicon systems with blue emission

AU - Deng, S. S.

AU - Wu, X. L.

AU - Yang, S. H.

PY - 2004/4/19

Y1 - 2004/4/19

N2 - Higher fullerenes (C70, C76, C84, C 94) were covalently coupled on porous Si (PS) to form fullerene-coupled PS systems. After stored in air for 3-13 months, a blue photoluminescence (PL) was observed in the range of 430-480 nm. PL excitation spectral examinations reveal that the photoexcited carriers are generated in the quantum confined nanocrystalline Si (nc-Si) cores, whereas radiative recombination occurs at the coupled nc-Si surface. Fourier-transform infrared absorption data disclose that the blue PL energy has a dependence on the oxygen content of nc-Si surface, indicating that the luminescent centers should be some oxygen-related defect states. Based on the annealing behavior of the blue PL peak in O2 and N2, we attribute the luminescent center to a pair of an oxygen vacancy and an interstitial oxygen, which also forms a peroxy linkage with an lattice oxygen.

AB - Higher fullerenes (C70, C76, C84, C 94) were covalently coupled on porous Si (PS) to form fullerene-coupled PS systems. After stored in air for 3-13 months, a blue photoluminescence (PL) was observed in the range of 430-480 nm. PL excitation spectral examinations reveal that the photoexcited carriers are generated in the quantum confined nanocrystalline Si (nc-Si) cores, whereas radiative recombination occurs at the coupled nc-Si surface. Fourier-transform infrared absorption data disclose that the blue PL energy has a dependence on the oxygen content of nc-Si surface, indicating that the luminescent centers should be some oxygen-related defect states. Based on the annealing behavior of the blue PL peak in O2 and N2, we attribute the luminescent center to a pair of an oxygen vacancy and an interstitial oxygen, which also forms a peroxy linkage with an lattice oxygen.

KW - Higher fullerence

KW - Photoluminescence

KW - Porous Si

UR - https://www.webofscience.com/wos/woscc/full-record/WOS:000221001300018

UR - https://openalex.org/W2047565856

UR - https://www.scopus.com/pages/publications/1842450323

U2 - 10.1016/j.actamat.2003.12.036

DO - 10.1016/j.actamat.2003.12.036

M3 - Journal Article

SN - 1359-6454

VL - 52

SP - 1953

EP - 1957

JO - Acta Materialia

JF - Acta Materialia

IS - 7

ER -

Higher fullerene-coupled porous silicon systems with blue emission

Abstract

Keywords

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