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Title: Optimization on photoelectric detection based on stacked La{sub 0.9}Sr{sub 0.1}MnO{sub 3-{delta}}/LaAlO{sub 3-{delta}} multijunctions

Abstract

Three multijunctions consisting of La{sub 0.9}Sr{sub 0.1}MnO{sub 3-{delta}} and LaAlO{sub 3-{delta}} on Si substrate have been fabricated under different oxygen pressures by laser molecular beam epitaxy. They exhibit nonlinear and rectifying current-voltage characteristics and evident photocurrent response to He-Ne laser illumination. Experimental results indicate that the periodically stacked multijunction grown under lower oxygen pressure shows a better rectification behavior and a higher photocurrent. The photovoltaic responsivities of the multijunctions are enhanced greatly at reverse bias and are much higher than that of a similarly grown single p-n junction. Based on the band structure of the multilayers, a possible mechanism of the photovoltaic process was proposed. A high photovoltage responsivity of 168.6 mV/mW has been achieved at - 6 V bias; this demonstrates the potential of the present multijunction configuration for photodetectors operating at room temperature.

Authors:
;  [1]; ;  [2]
  1. School of Materials Sciences and Technology, China University of Geosciences, Beijing 100083 (China)
  2. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Science, Beijing 100190 (China)
Publication Date:
OSTI Identifier:
22036672
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 110; Journal Issue: 3; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; ALUMINATES; ELECTRONIC STRUCTURE; HELIUM-NEON LASERS; LANTHANUM COMPOUNDS; LAYERS; MANGANATES; MOLECULAR BEAM EPITAXY; NONLINEAR PROBLEMS; OXYGEN; PHOTOCONDUCTIVITY; PHOTODETECTORS; PHOTOVOLTAIC EFFECT; P-N JUNCTIONS; SEMICONDUCTOR MATERIALS; SILICON; STRONTIUM COMPOUNDS; SUBSTRATES; TEMPERATURE RANGE 0273-0400 K

Citation Formats

Jie Xing, Hui Yinghao, Er Jiaguo, and Fang Yang. Optimization on photoelectric detection based on stacked La{sub 0.9}Sr{sub 0.1}MnO{sub 3-{delta}}/LaAlO{sub 3-{delta}} multijunctions. United States: N. p., 2011. Web. doi:10.1063/1.3621143.
Jie Xing, Hui Yinghao, Er Jiaguo, & Fang Yang. Optimization on photoelectric detection based on stacked La{sub 0.9}Sr{sub 0.1}MnO{sub 3-{delta}}/LaAlO{sub 3-{delta}} multijunctions. United States. doi:10.1063/1.3621143.
Jie Xing, Hui Yinghao, Er Jiaguo, and Fang Yang. Mon . "Optimization on photoelectric detection based on stacked La{sub 0.9}Sr{sub 0.1}MnO{sub 3-{delta}}/LaAlO{sub 3-{delta}} multijunctions". United States. doi:10.1063/1.3621143.
@article{osti_22036672,
title = {Optimization on photoelectric detection based on stacked La{sub 0.9}Sr{sub 0.1}MnO{sub 3-{delta}}/LaAlO{sub 3-{delta}} multijunctions},
author = {Jie Xing and Hui Yinghao and Er Jiaguo and Fang Yang},
abstractNote = {Three multijunctions consisting of La{sub 0.9}Sr{sub 0.1}MnO{sub 3-{delta}} and LaAlO{sub 3-{delta}} on Si substrate have been fabricated under different oxygen pressures by laser molecular beam epitaxy. They exhibit nonlinear and rectifying current-voltage characteristics and evident photocurrent response to He-Ne laser illumination. Experimental results indicate that the periodically stacked multijunction grown under lower oxygen pressure shows a better rectification behavior and a higher photocurrent. The photovoltaic responsivities of the multijunctions are enhanced greatly at reverse bias and are much higher than that of a similarly grown single p-n junction. Based on the band structure of the multilayers, a possible mechanism of the photovoltaic process was proposed. A high photovoltage responsivity of 168.6 mV/mW has been achieved at - 6 V bias; this demonstrates the potential of the present multijunction configuration for photodetectors operating at room temperature.},
doi = {10.1063/1.3621143},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 3,
volume = 110,
place = {United States},
year = {2011},
month = {8}
}