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

School of Physical Science and Technology

Northwestern Polytechnical University Xian

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

10 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	10-12
Number of pages	3
Journal	Solid State Communications
Volume	187
DOIs	https://doi.org/10.1016/j.ssc.2014.02.008
State	Published - Jun 2014

Keywords

A. Manganite
C. Heterojunction
D. Photovoltage

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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",

issn = "0038-1098",

publisher = "Elsevier Ltd",

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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 La_0.9Li_0.1MnO ₃/SrTiO₃-Nb heterojunction under ultraviolet light

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Keywords

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