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Observation of polarized luminescence from Jahn-Teller split states of self-trapped excitons in PbWO₄ by time-resolved spectroscopy
http://hdl.handle.net/10091/3828
http://hdl.handle.net/10091/382882de979a-3ae8-49fe-b360-81064b852680
| 名前 / ファイル | ライセンス | アクション |
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Observation_polarized_luminescence.pdf (382.7 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||
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| 公開日 | 2010-01-22 | |||||||||
| タイトル | ||||||||||
| タイトル | Observation of polarized luminescence from Jahn-Teller split states of self-trapped excitons in PbWO₄ by time-resolved spectroscopy | |||||||||
| 言語 | ||||||||||
| 言語 | eng | |||||||||
| DOI | ||||||||||
| 関連識別子 | https://doi.org/10.1088/0953-8984/22/4/045503 | |||||||||
| 関連名称 | 10.1088/0953-8984/22/4/045503 | |||||||||
| キーワード | ||||||||||
| 主題 | photoluminescence, polarization, time-resolved spectroscopy, Jahn-Teller effect, adiabatic potential energy surface, self-trapped exciton, PbWO₄ | |||||||||
| 資源タイプ | ||||||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||||||
| タイプ | journal article | |||||||||
| 著者 |
Itoh, Minoru
× Itoh, Minoru
× Aoki, Tomonori
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| 出版者 | ||||||||||
| 出版者 | IOP Publishing | |||||||||
| 引用 | ||||||||||
| 内容記述 | Journal of physics. Condensed matter. 22(4):045503 (2010) | |||||||||
| 書誌情報 |
Journal of physics. Condensed matter 巻 22, 号 4, p. 1-10, 発行日 2010-02 |
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| 抄録 | ||||||||||
| 内容記述 | Time-resolved luminescence spectra of oriented PbWO₄ crystals have been measured for polarizations with the electric vector parallel to the crystallographic c axis ( E ∥ c) and perpendicular to it (E ⊥ c). All the three emission bands (I, II and III) due to the Jahn-Teller split states of a self-trapped exciton (STE) located on the (WO₄)²⁻ complex anion are found to exhibit significant polarizations in the ac plane. The main band II peaking at 425 nm is polarized with E ∥ c at low temperatures (T < 100 K), but changes its polarization from E ∥ c to E ⊥ c at T > 150 K. Band III at 450 nm is polarized with E ⊥ c at T = 230 and 300 K. The degree of polarization of these two bands does not depend on the polarization of excitation light. On the other hand, band I at 407 nm is polarized with E ⊥ c ( E ∥ c) under the photoexcitation polarized parallel (perpendicular) to the c axis, in the temperature range of T = 150-300 K. The observed polarization characteristics of three emission bands invoke further lowering of symmetry of tetrahedral (WO₄)²⁻ ions due to the uniaxially compressive crystal field, in addition to the Jahn-Teller distortion. The sublevels of the STEs responsible for the PbWO₄ luminescence are assigned on the basis of a group-theoretical consideration. | |||||||||
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| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 0953-8984 | |||||||||
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| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AA10672168 | |||||||||
| PubMed | ||||||||||
| 識別子タイプ | PMID | |||||||||
| 関連識別子 | http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?CMD=search&DB=pubmed&term=21386318 | |||||||||
| 関連名称 | 21386318 | |||||||||
| 権利 | ||||||||||
| 権利情報 | Copyright (c) 2010 IOP Publishing | |||||||||
| 出版タイプ | ||||||||||
| 出版タイプ | AM | |||||||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||||
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| URL | http://gateway.isiknowledge.com/gateway/Gateway.cgi?&GWVersion=2&SrcAuth=ShinshuUniv&SrcApp=ShinshuUniv&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000273552400017 | |||||||||
