Ferroelectric film materials have attracted significant interest due to their potential for harvesting various forms ofclean energy from natural environmental sources.However,the photoelectric performance of these mat...Ferroelectric film materials have attracted significant interest due to their potential for harvesting various forms ofclean energy from natural environmental sources.However,the photoelectric performance of these materials isfrequently constrained by heat generation during light absorption,resulting in significant thermal losses.Most offerroelectric films produce photocurrent and thermocurrent with opposite polarity,thus weakening the coupledphoto-thermoelectric output of the devices.Here we report on a LaNiO_(3)/BiMn_(2)O_(5)(BMO)/ITO ferroelectric film toproduce photocurrent and thermocurrent with the same polarity.The polarity of the photocurrent generated bythe BMO film is shown to be determined solely by the direction of spontaneous polarization,overcoming thedetrimental effect of Schottky barrier for energy harvesting in device.We propose a new strategy to enhance thecoupling factor,thereby offering valuable new insights for optimizing the utilization of ferroelectric materials inboth light and heat energy applications.展开更多
基金supported by the National Natural Science Foundation of China(grant no.52072041)the Beijing Natural Science Foundation(grant no.JQ21007).
文摘Ferroelectric film materials have attracted significant interest due to their potential for harvesting various forms ofclean energy from natural environmental sources.However,the photoelectric performance of these materials isfrequently constrained by heat generation during light absorption,resulting in significant thermal losses.Most offerroelectric films produce photocurrent and thermocurrent with opposite polarity,thus weakening the coupledphoto-thermoelectric output of the devices.Here we report on a LaNiO_(3)/BiMn_(2)O_(5)(BMO)/ITO ferroelectric film toproduce photocurrent and thermocurrent with the same polarity.The polarity of the photocurrent generated bythe BMO film is shown to be determined solely by the direction of spontaneous polarization,overcoming thedetrimental effect of Schottky barrier for energy harvesting in device.We propose a new strategy to enhance thecoupling factor,thereby offering valuable new insights for optimizing the utilization of ferroelectric materials inboth light and heat energy applications.
