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  • Title: Current-pulse-induced enhancement of transient photodetective effect in tilted manganite film.
    Author: Ni H, Zhao K, Xi JF, Feng X, Xiang WF, Zhao SQ, Kong YC, Wong HK.
    Journal: Opt Express; 2012 Dec 17; 20(27):28494-9. PubMed ID: 23263085.
    Abstract:
    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.
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