Open AccessCurrent-pulse-induced enhancement of transient photodetective effect in tilted manganite film
Author(s) -
Hao Ni,
Kun Zhao,
Jianfeng Xi,
Xin Feng,
Wenfeng Xiang,
Suoqi Zhao,
Youyong Kong,
H. K. Wong
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.028494
Subject(s) - materials science , manganite , optoelectronics , optics , thin film , photovoltaic effect , current (fluid) , photodetector , irradiation , photovoltaic system , nanotechnology , electrical engineering , condensed matter physics , physics , engineering , ferromagnetism , nuclear physics
A current-pulse-induced enhancement effect of transient photovoltage has been discovered in tilted manganite La(2/3)Ca(1/3)MnO(3) film at room temperature. Here, by applying a pulsed current stimulus before pulse laser irradiation, we observed a significant enhancement of more than 50% in photovoltaic sensitivity. The current-pulse-induced photovoltaic enhancement can be tuned not only by the stimulating current value but also by the stimulating time. Such enhancement is time-sensitive and reproducible. This electrically induced effect, observed at room temperature, has both the benefit of a discovery in materials properties and the promise of applications for thin film manganites in photodetectors.