Abstract :
In this work, we propose the compositionally graded ferroelectrics (CGF) as solar energy harvesting device. Such a novel geometrically
frustrated system exhibits an intrinsic built-in potential which can be used to separate the hole and electron currents. It is shown
that the CGF based photovoltaic devices can achieve orders of higher efficiency than bulk/non-graded ferroelectric thin films. The dependence
of the photovoltaic effect on various device parameters have also been investigated.
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