Current-pulse-induced enhancement of transient photodetective effect in tilted manganite film

Opt Express. 2012 Dec 17;20(27):28494-9. doi: 10.1364/OE.20.028494.

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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Conductometry / instrumentation*
  • Equipment Design
  • Equipment Failure Analysis
  • Manganese Compounds / chemistry*
  • Manganese Compounds / radiation effects
  • Membranes, Artificial*
  • Photometry / instrumentation*

Substances

  • Manganese Compounds
  • Membranes, Artificial
  • manganite