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Quantifying the pyroelectric and photovoltaic coupling series of ferroelectric films
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Quantifying the pyroelectric and photovoltaic coupling series of ferroelectric films
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Journal Article
Quantifying the pyroelectric and photovoltaic coupling series of ferroelectric films
2025
Overview
The coupling of photovoltaic and pyroelectric effects is a common phenomenon in ferroelectric films and often results in coupling enhancements. Although the coupling effects of a variety of ferroelectric films have been examined in terms of improved performance, they have yet to be quantitatively ranked and assessed. Here, by taking the charge coupling factor, the Yang’s charge, and output energy as metrics to evaluate the coupling performance, a methodology is developed for evaluating the performance of a range ferroelectric films when the pyroelectric and photovoltaic effects are coupled. By experimentally measuring and quantitatively ranking the evaluation metrics, the influence of coupling effects on the output charge and the energy harvesting capabilities of various ferroelectric films can be readily visualized. In addition, the analysis of the underlying reasons for the coupling enhancement enables optimization of the methods to quantify the charge coupling factor. This work provides a unique reference for the selection of materials, optimization of performance, and energy harvesting for coupled ferroelectric film-based generators.
The Yang’s charge is proposed as a metric for evaluating the coupling performance in this study. Compared to the conventional charge coupling factor which only considers the relative performance change, the Yang’s charge also considers the absolute performance of the device.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
