Self-trapped exciton state in Si nanocrystals revealed by induced absorption

W. D.A.M. De Boer; D. Timmerman; T. Gregorkiewicz; H. Zhang; W. J. Buma; A. N. Poddubny; A. A. Prokofiev; I. N. Yassievich

doi:10.1103/PhysRevB.85.161409

Self-trapped exciton state in Si nanocrystals revealed by induced absorption

W. D.A.M. De Boer, D. Timmerman, T. Gregorkiewicz, H. Zhang, W. J. Buma, A. N. Poddubny, A. A. Prokofiev, I. N. Yassievich

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

Abstract

We report results of time-resolved induced absorption (IA) spectroscopy on Si nanocrystals (Si NCs) embedded in a SiO ₂ matrix. In line with theoretical modeling, the IA amplitude decreases with probing photon energy, however only until a certain threshold value. For larger photon energies, an increase of IA is observed. This unexpected behavior is interpreted in terms of the self-trapped exciton state whose formation in Si NCs was put forward some time ago based on theoretical considerations. Here, we present a direct experimental confirmation of this supposition.

Original language	English
Article number	161409
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	85
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevB.85.161409
State	Published - 25 Apr 2012
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.85.161409

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title = "Self-trapped exciton state in Si nanocrystals revealed by induced absorption",

abstract = "We report results of time-resolved induced absorption (IA) spectroscopy on Si nanocrystals (Si NCs) embedded in a SiO 2 matrix. In line with theoretical modeling, the IA amplitude decreases with probing photon energy, however only until a certain threshold value. For larger photon energies, an increase of IA is observed. This unexpected behavior is interpreted in terms of the self-trapped exciton state whose formation in Si NCs was put forward some time ago based on theoretical considerations. Here, we present a direct experimental confirmation of this supposition.",

author = "{De Boer}, {W. D.A.M.} and D. Timmerman and T. Gregorkiewicz and H. Zhang and Buma, {W. J.} and Poddubny, {A. N.} and Prokofiev, {A. A.} and Yassievich, {I. N.}",

year = "2012",

month = apr,

day = "25",

doi = "10.1103/PhysRevB.85.161409",

language = "الإنجليزيّة",

volume = "85",

journal = "Physical Review B - Condensed Matter and Materials Physics",

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TY - JOUR

T1 - Self-trapped exciton state in Si nanocrystals revealed by induced absorption

AU - De Boer, W. D.A.M.

AU - Timmerman, D.

AU - Gregorkiewicz, T.

AU - Zhang, H.

AU - Buma, W. J.

AU - Poddubny, A. N.

AU - Prokofiev, A. A.

AU - Yassievich, I. N.

PY - 2012/4/25

Y1 - 2012/4/25

N2 - We report results of time-resolved induced absorption (IA) spectroscopy on Si nanocrystals (Si NCs) embedded in a SiO 2 matrix. In line with theoretical modeling, the IA amplitude decreases with probing photon energy, however only until a certain threshold value. For larger photon energies, an increase of IA is observed. This unexpected behavior is interpreted in terms of the self-trapped exciton state whose formation in Si NCs was put forward some time ago based on theoretical considerations. Here, we present a direct experimental confirmation of this supposition.

AB - We report results of time-resolved induced absorption (IA) spectroscopy on Si nanocrystals (Si NCs) embedded in a SiO 2 matrix. In line with theoretical modeling, the IA amplitude decreases with probing photon energy, however only until a certain threshold value. For larger photon energies, an increase of IA is observed. This unexpected behavior is interpreted in terms of the self-trapped exciton state whose formation in Si NCs was put forward some time ago based on theoretical considerations. Here, we present a direct experimental confirmation of this supposition.

UR - http://www.scopus.com/inward/record.url?scp=84860442523&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.85.161409

DO - 10.1103/PhysRevB.85.161409

M3 - مقالة

SN - 1098-0121

VL - 85

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 16

M1 - 161409

ER -

Self-trapped exciton state in Si nanocrystals revealed by induced absorption

Abstract

All Science Journal Classification (ASJC) codes

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