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Keywords:

  • electrocaloric effect;
  • electrocaloric efficiency;
  • ceramic films;
  • polymer films
Thumbnail image of graphical abstract

Efficiency is defined as η = |Q|/|W| in order to investigate the electrical work |W| associated with electrocaloric heat |Q|. This materials parameter indicates that polymer films are slightly more energy efficient than ceramic films, and therefore both species of material remain candidates for future cooling applications.