Excitonic state in anatase TiO2 single crystal

N. Hosaka; T. Sekiya; S. Kurita

doi:10.1016/S0022-2313(96)00253-0

Excitonic state in anatase TiO₂ single crystal

N. Hosaka, T. Sekiya, S. Kurita

ENG - Electronic Engineering

Yokohama National University

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

54 Citations (Scopus)

Abstract

Temperature dependence of polarized absorption near the band gap was measured for as-grown anatase single crystals and annealed ones which were heat-treated in oxygen atmosphere. The steepness index obtained indicates that an exciton is self-trapped. An absorption band appears at 2.9 eV after heat treatment. A broad luminescence was observed at 2.3 eV. The large Stokes shift is consistent with the fact that the exciton relaxes to a self-trapped state.

Original language	English
Pages (from-to)	874-875
Number of pages	2
Journal	Journal of Luminescence
Volume	72-74
DOIs	https://doi.org/10.1016/S0022-2313(96)00253-0
Publication status	Published - 1997 Jun

Keywords

Anatase
Self-trapped exciton
Steepness index
TiO

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10.1016/S0022-2313(96)00253-0

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title = "Excitonic state in anatase TiO2 single crystal",

abstract = "Temperature dependence of polarized absorption near the band gap was measured for as-grown anatase single crystals and annealed ones which were heat-treated in oxygen atmosphere. The steepness index obtained indicates that an exciton is self-trapped. An absorption band appears at 2.9 eV after heat treatment. A broad luminescence was observed at 2.3 eV. The large Stokes shift is consistent with the fact that the exciton relaxes to a self-trapped state.",

keywords = "Anatase, Self-trapped exciton, Steepness index, TiO",

author = "N. Hosaka and T. Sekiya and S. Kurita",

note = "Funding Information: This work was supportedi n part by the Grant-in-Aid for ScientificR esearchfr om the Ministry of Education, Sciencea nd Culture (No. 18454080). One of them( N. H.) was indebtedt o the Sasagawa ScientificR esearchG rant from The Japan Science Societyf or financials upporL.",

year = "1997",

month = jun,

doi = "10.1016/S0022-2313(96)00253-0",

language = "English",

volume = "72-74",

pages = "874--875",

journal = "Journal of Luminescence",

issn = "0022-2313",

publisher = "Elsevier",

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TY - JOUR

T1 - Excitonic state in anatase TiO2 single crystal

AU - Hosaka, N.

AU - Sekiya, T.

AU - Kurita, S.

N1 - Funding Information: This work was supportedi n part by the Grant-in-Aid for ScientificR esearchfr om the Ministry of Education, Sciencea nd Culture (No. 18454080). One of them( N. H.) was indebtedt o the Sasagawa ScientificR esearchG rant from The Japan Science Societyf or financials upporL.

PY - 1997/6

Y1 - 1997/6

N2 - Temperature dependence of polarized absorption near the band gap was measured for as-grown anatase single crystals and annealed ones which were heat-treated in oxygen atmosphere. The steepness index obtained indicates that an exciton is self-trapped. An absorption band appears at 2.9 eV after heat treatment. A broad luminescence was observed at 2.3 eV. The large Stokes shift is consistent with the fact that the exciton relaxes to a self-trapped state.

AB - Temperature dependence of polarized absorption near the band gap was measured for as-grown anatase single crystals and annealed ones which were heat-treated in oxygen atmosphere. The steepness index obtained indicates that an exciton is self-trapped. An absorption band appears at 2.9 eV after heat treatment. A broad luminescence was observed at 2.3 eV. The large Stokes shift is consistent with the fact that the exciton relaxes to a self-trapped state.

KW - Anatase

KW - Self-trapped exciton

KW - Steepness index

KW - TiO

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U2 - 10.1016/S0022-2313(96)00253-0

DO - 10.1016/S0022-2313(96)00253-0

M3 - Article

AN - SCOPUS:0031167682

SN - 0022-2313

VL - 72-74

SP - 874

EP - 875

JO - Journal of Luminescence

JF - Journal of Luminescence

ER -

Excitonic state in anatase TiO₂ single crystal

Abstract

Keywords

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