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Magnetically Tunable Photocurrent in La 0.7 Sr 0.3 MnO 3 /BaSnO 3 Heterojunctions
Author(s) -
Luo Bingcheng,
Hu Junbiao,
Wang Jing
Publication year - 2017
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201700279
Subject(s) - photocurrent , materials science , heterojunction , manganite , optoelectronics , rectification , perovskite (structure) , magnetoresistance , diode , ultraviolet , colossal magnetoresistance , magnetic field , ferromagnetism , voltage , chemistry , condensed matter physics , electrical engineering , physics , engineering , quantum mechanics , crystallography
Artificially constructed oxide heterointerfaces have attracted much attention. Herein, the novel all‐perovskite p‐n heterojunction composed of a colossal magnetoresistive manganite La 0.7 Sr 0.3 MnO 3 (LSMO) and an n‐type transparent semiconducting BaSnO 3 (BSO) is designed via optimizing the growth condition. This LSMO/BSO p‐n junction exhibits good rectification with a forward‐to‐reverse ratio of 275 at 1 V, high photo detection capability with a photo‐to‐dark current of 581.9 at ‐0.5 V, high ultraviolet light sensitivity with a UV (360 nm)‐to‐visible (532 nm) ratio of ∼2.4 × 10 3 , and a significantly magneto‐tunable photocurrent with a variation ratio of ∼1.25 % under 532 nm illumination and 0.5 T magnetic field. As a result, combining synergistically the functionality of diode and magnetically tunable photo detector, the LSMO/BSO p‐n junction is a promising candidate for advanced magneto‐optoelectronic devices.