The effect of Mn doping on the interband transition and band tail absorption characteristics of Mn:(Pb, Sr)TiO3 ferroelectric thin films

Yan Qing Li; Man Wu; Jing Yang

doi:10.11972/j.issn.1001-9014.2019.05.002

The effect of Mn doping on the interband transition and band tail absorption characteristics of Mn:(Pb, Sr)TiO₃ ferroelectric thin films

Yan Qing Li
, Man Wu
, Jing Yang^*

^*Corresponding author for this work

School of Physics and Electronic Science

East China Normal University

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

Abstract

Mn composition dependence of optical properties, especially interband electronic transition and band tail absorption behaviors, in Mn doped (Pb, Sr)TiO₃ (PST) films were investigated by transmittance spectroscopy. The optical parameters of Mn doped PST films in transparent region were evaluated by Cauchy model. The decrease of optical band gap and the expansion of the band tail states with the increasing of Mn dopant amount were observed. The shrinkage of optical band gap is attributed to lowering the bottom of conduction bands by Mn 3d orbitals and the decrease of lattice constant in Mn doped PST films. Meanwhile, the random occupation of Mn ion and the increase of oxygen vacancy after Mn doping are the main causes for the expansion of localized states in band tails.

Translated title of the contribution	锰掺杂对钛酸锶铅铁电薄膜带-带跃迁和带尾吸收特性的影响
Original language	English
Pages (from-to)	554-558
Number of pages	5
Journal	Hongwai Yu Haomibo Xuebao/Journal of Infrared and Millimeter Waves
Volume	38
Issue number	5
DOIs	https://doi.org/10.11972/j.issn.1001-9014.2019.05.002
State	Published - 1 Oct 2019

Keywords

Band tails
Electronic band structure
Ferroelectric films
Optical properties

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10.11972/j.issn.1001-9014.2019.05.002

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title = "The effect of Mn doping on the interband transition and band tail absorption characteristics of Mn:(Pb, Sr)TiO3 ferroelectric thin films",

abstract = "Mn composition dependence of optical properties, especially interband electronic transition and band tail absorption behaviors, in Mn doped (Pb, Sr)TiO3 (PST) films were investigated by transmittance spectroscopy. The optical parameters of Mn doped PST films in transparent region were evaluated by Cauchy model. The decrease of optical band gap and the expansion of the band tail states with the increasing of Mn dopant amount were observed. The shrinkage of optical band gap is attributed to lowering the bottom of conduction bands by Mn 3d orbitals and the decrease of lattice constant in Mn doped PST films. Meanwhile, the random occupation of Mn ion and the increase of oxygen vacancy after Mn doping are the main causes for the expansion of localized states in band tails.",

keywords = "Band tails, Electronic band structure, Ferroelectric films, Optical properties",

author = "Li, \{Yan Qing\} and Man Wu and Jing Yang",

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T1 - The effect of Mn doping on the interband transition and band tail absorption characteristics of Mn:(Pb, Sr)TiO3 ferroelectric thin films

AU - Li, Yan Qing

AU - Wu, Man

AU - Yang, Jing

PY - 2019/10/1

Y1 - 2019/10/1

N2 - Mn composition dependence of optical properties, especially interband electronic transition and band tail absorption behaviors, in Mn doped (Pb, Sr)TiO3 (PST) films were investigated by transmittance spectroscopy. The optical parameters of Mn doped PST films in transparent region were evaluated by Cauchy model. The decrease of optical band gap and the expansion of the band tail states with the increasing of Mn dopant amount were observed. The shrinkage of optical band gap is attributed to lowering the bottom of conduction bands by Mn 3d orbitals and the decrease of lattice constant in Mn doped PST films. Meanwhile, the random occupation of Mn ion and the increase of oxygen vacancy after Mn doping are the main causes for the expansion of localized states in band tails.

AB - Mn composition dependence of optical properties, especially interband electronic transition and band tail absorption behaviors, in Mn doped (Pb, Sr)TiO3 (PST) films were investigated by transmittance spectroscopy. The optical parameters of Mn doped PST films in transparent region were evaluated by Cauchy model. The decrease of optical band gap and the expansion of the band tail states with the increasing of Mn dopant amount were observed. The shrinkage of optical band gap is attributed to lowering the bottom of conduction bands by Mn 3d orbitals and the decrease of lattice constant in Mn doped PST films. Meanwhile, the random occupation of Mn ion and the increase of oxygen vacancy after Mn doping are the main causes for the expansion of localized states in band tails.

KW - Band tails

KW - Electronic band structure

KW - Ferroelectric films

KW - Optical properties

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DO - 10.11972/j.issn.1001-9014.2019.05.002

M3 - 文章

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SN - 1001-9014

VL - 38

SP - 554

EP - 558

JO - Hongwai Yu Haomibo Xuebao/Journal of Infrared and Millimeter Waves

JF - Hongwai Yu Haomibo Xuebao/Journal of Infrared and Millimeter Waves

IS - 5

ER -

The effect of Mn doping on the interband transition and band tail absorption characteristics of Mn:(Pb, Sr)TiO₃ ferroelectric thin films

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Keywords

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