Time response of photovoltage in La0.9Li0.1MnO 3/SrTiO3-Nb heterojunction under ultraviolet light

J. Y. Wang; W. Zhai; B. C. Luo; K. X. Jin; C. L. Chen

doi:10.1016/j.ssc.2014.02.008

Time response of photovoltage in La_0.9Li_0.1MnO ₃/SrTiO₃-Nb heterojunction under ultraviolet light

J. Y. Wang, W. Zhai, B. C. Luo, K. X. Jin, C. L. Chen

物理科学与技术学院

Northwestern Polytechnical University Xian

科研成果: 期刊稿件 › 文章 › 同行评审

10 引用（Scopus）

摘要

We focus on the time response of photovoltage property in heterojunction composed of univalent doped manganite La_0.9Li_0.1MnO ₃(LIMO) and SrTiO₃-Nb(STON). Under the irradiation of 248 nm laser pulse, the photovoltage shows a second order exponential rising process with time constants τ₁(=27.7-93.0 μs) and τ₂ (<9.84 μs). After the light source is shut down, the photovoltage exhibits a first order exponential decreasing stage. The carrier lifetime τ at the order of millisecond in this p-n junction is much longer than that in similar p-n junctions based on manganites. The maximum values of both τ₁ and τ appear at around 250 K, which coincides with the metallic-insulator transition temperature for LIMO. These imply that the time response property of heterojunction is partly controlled by the inherent transportation mechanisms in the LIMO layer.

源语言	英语
页（从-至）	10-12
页数	3
期刊	Solid State Communications
卷	187
DOI	https://doi.org/10.1016/j.ssc.2014.02.008
出版状态	已出版 - 6月 2014

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10.1016/j.ssc.2014.02.008

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title = "Time response of photovoltage in La0.9Li0.1MnO 3/SrTiO3-Nb heterojunction under ultraviolet light",

abstract = "We focus on the time response of photovoltage property in heterojunction composed of univalent doped manganite La0.9Li0.1MnO 3(LIMO) and SrTiO3-Nb(STON). Under the irradiation of 248 nm laser pulse, the photovoltage shows a second order exponential rising process with time constants τ1(=27.7-93.0 μs) and τ2 (<9.84 μs). After the light source is shut down, the photovoltage exhibits a first order exponential decreasing stage. The carrier lifetime τ at the order of millisecond in this p-n junction is much longer than that in similar p-n junctions based on manganites. The maximum values of both τ1 and τ appear at around 250 K, which coincides with the metallic-insulator transition temperature for LIMO. These imply that the time response property of heterojunction is partly controlled by the inherent transportation mechanisms in the LIMO layer.",

keywords = "A. Manganite, C. Heterojunction, D. Photovoltage",

author = "Wang, {J. Y.} and W. Zhai and Luo, {B. C.} and Jin, {K. X.} and Chen, {C. L.}",

year = "2014",

month = jun,

doi = "10.1016/j.ssc.2014.02.008",

language = "英语",

volume = "187",

pages = "10--12",

journal = "Solid State Communications",

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publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Time response of photovoltage in La0.9Li0.1MnO 3/SrTiO3-Nb heterojunction under ultraviolet light

AU - Wang, J. Y.

AU - Zhai, W.

AU - Luo, B. C.

AU - Jin, K. X.

AU - Chen, C. L.

PY - 2014/6

Y1 - 2014/6

N2 - We focus on the time response of photovoltage property in heterojunction composed of univalent doped manganite La0.9Li0.1MnO 3(LIMO) and SrTiO3-Nb(STON). Under the irradiation of 248 nm laser pulse, the photovoltage shows a second order exponential rising process with time constants τ1(=27.7-93.0 μs) and τ2 (<9.84 μs). After the light source is shut down, the photovoltage exhibits a first order exponential decreasing stage. The carrier lifetime τ at the order of millisecond in this p-n junction is much longer than that in similar p-n junctions based on manganites. The maximum values of both τ1 and τ appear at around 250 K, which coincides with the metallic-insulator transition temperature for LIMO. These imply that the time response property of heterojunction is partly controlled by the inherent transportation mechanisms in the LIMO layer.

AB - We focus on the time response of photovoltage property in heterojunction composed of univalent doped manganite La0.9Li0.1MnO 3(LIMO) and SrTiO3-Nb(STON). Under the irradiation of 248 nm laser pulse, the photovoltage shows a second order exponential rising process with time constants τ1(=27.7-93.0 μs) and τ2 (<9.84 μs). After the light source is shut down, the photovoltage exhibits a first order exponential decreasing stage. The carrier lifetime τ at the order of millisecond in this p-n junction is much longer than that in similar p-n junctions based on manganites. The maximum values of both τ1 and τ appear at around 250 K, which coincides with the metallic-insulator transition temperature for LIMO. These imply that the time response property of heterojunction is partly controlled by the inherent transportation mechanisms in the LIMO layer.

KW - A. Manganite

KW - C. Heterojunction

KW - D. Photovoltage

UR - http://www.scopus.com/inward/record.url?scp=84894658887&partnerID=8YFLogxK

U2 - 10.1016/j.ssc.2014.02.008

DO - 10.1016/j.ssc.2014.02.008

M3 - 文章

AN - SCOPUS:84894658887

SN - 0038-1098

VL - 187

SP - 10

EP - 12

JO - Solid State Communications

JF - Solid State Communications

ER -

Time response of photovoltage in La0.9Li0.1MnO 3/SrTiO3-Nb heterojunction under ultraviolet light

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Time response of photovoltage in La_0.9Li_0.1MnO ₃/SrTiO₃-Nb heterojunction under ultraviolet light