Temperature dependence of optical band gap in ferroelectric Bi3.25 La0.75 Ti3 O12 films determined by ultraviolet transmittance measurements

Z. G. Hu; Y. W. Li; F. Y. Yue; Z. Q. Zhu; J. H. Chu

doi:10.1063/1.2816915

Temperature dependence of optical band gap in ferroelectric Bi3.25 La0.75 Ti3 O12 films determined by ultraviolet transmittance measurements

Z. G. Hu^*
, Y. W. Li
, F. Y. Yue
, Z. Q. Zhu
, J. H. Chu

^*此作品的通讯作者

物理与电子科学学院

East China Normal University
CAS - Shanghai Institute of Technical Physics

科研成果: 期刊稿件 › 文章 › 同行评审

34 引用（Scopus）

摘要

Optical properties of ferroelectric Bi3.25 La0.75 Ti3 O12 (BLT) films on quartz have been investigated using ultraviolet-infrared transmittance spectra in the temperature range of 77-500 K. The spectra can be divided into three distinctive photon regions between 1.1 and 6.5 eV. It is found that the band gap Eg decreases from 3.88 to 3.77 eV with the temperature. The parameters aB and B of the Bose-Einstein model are 30.3 meV and 218.7 K, respectively. The band narrowing coefficient d Eg dT is -2.65× 10-4 eVK at room temperature. The present results can be crucial for future application of ferroelectric BLT-based electro-optic and high temperature optoelectronic devices.

源语言	英语
文章编号	221903
期刊	Applied Physics Letters
卷	91
期	22
DOI	https://doi.org/10.1063/1.2816915
出版状态	已出版 - 2007

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title = "Temperature dependence of optical band gap in ferroelectric Bi3.25 La0.75 Ti3 O12 films determined by ultraviolet transmittance measurements",

abstract = "Optical properties of ferroelectric Bi3.25 La0.75 Ti3 O12 (BLT) films on quartz have been investigated using ultraviolet-infrared transmittance spectra in the temperature range of 77-500 K. The spectra can be divided into three distinctive photon regions between 1.1 and 6.5 eV. It is found that the band gap Eg decreases from 3.88 to 3.77 eV with the temperature. The parameters aB and B of the Bose-Einstein model are 30.3 meV and 218.7 K, respectively. The band narrowing coefficient d Eg dT is -2.65× 10-4 eVK at room temperature. The present results can be crucial for future application of ferroelectric BLT-based electro-optic and high temperature optoelectronic devices.",

author = "Hu, \{Z. G.\} and Li, \{Y. W.\} and Yue, \{F. Y.\} and Zhu, \{Z. Q.\} and Chu, \{J. H.\}",

year = "2007",

doi = "10.1063/1.2816915",

language = "英语",

volume = "91",

journal = "Applied Physics Letters",

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publisher = "American Institute of Physics",

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T1 - Temperature dependence of optical band gap in ferroelectric Bi3.25 La0.75 Ti3 O12 films determined by ultraviolet transmittance measurements

AU - Hu, Z. G.

AU - Li, Y. W.

AU - Yue, F. Y.

AU - Zhu, Z. Q.

AU - Chu, J. H.

PY - 2007

Y1 - 2007

N2 - Optical properties of ferroelectric Bi3.25 La0.75 Ti3 O12 (BLT) films on quartz have been investigated using ultraviolet-infrared transmittance spectra in the temperature range of 77-500 K. The spectra can be divided into three distinctive photon regions between 1.1 and 6.5 eV. It is found that the band gap Eg decreases from 3.88 to 3.77 eV with the temperature. The parameters aB and B of the Bose-Einstein model are 30.3 meV and 218.7 K, respectively. The band narrowing coefficient d Eg dT is -2.65× 10-4 eVK at room temperature. The present results can be crucial for future application of ferroelectric BLT-based electro-optic and high temperature optoelectronic devices.

AB - Optical properties of ferroelectric Bi3.25 La0.75 Ti3 O12 (BLT) films on quartz have been investigated using ultraviolet-infrared transmittance spectra in the temperature range of 77-500 K. The spectra can be divided into three distinctive photon regions between 1.1 and 6.5 eV. It is found that the band gap Eg decreases from 3.88 to 3.77 eV with the temperature. The parameters aB and B of the Bose-Einstein model are 30.3 meV and 218.7 K, respectively. The band narrowing coefficient d Eg dT is -2.65× 10-4 eVK at room temperature. The present results can be crucial for future application of ferroelectric BLT-based electro-optic and high temperature optoelectronic devices.

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U2 - 10.1063/1.2816915

DO - 10.1063/1.2816915

M3 - 文章

AN - SCOPUS:36549058649

SN - 0003-6951

VL - 91

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 22

M1 - 221903

ER -

Temperature dependence of optical band gap in ferroelectric Bi3.25 La0.75 Ti3 O12 films determined by ultraviolet transmittance measurements

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