Transparent integrated pyroelectric-photovoltaic structure for photo-thermo hybrid power generation

Malkeshkumar Patel, Hyeong-Ho Park, Priyanka Bhatnagar, Naveen Kumar, Junsik Lee and Joondong Kim ()
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Malkeshkumar Patel: Multidisciplinary Core Institute for Future Energies (MCIFE)
Hyeong-Ho Park: Korea Advanced Nanofab Center (KANC)
Priyanka Bhatnagar: Multidisciplinary Core Institute for Future Energies (MCIFE)
Naveen Kumar: Multidisciplinary Core Institute for Future Energies (MCIFE)
Junsik Lee: Multidisciplinary Core Institute for Future Energies (MCIFE)
Joondong Kim: Multidisciplinary Core Institute for Future Energies (MCIFE)

Nature Communications, 2024, vol. 15, issue 1, 1-14

Abstract: Abstract Thermal losses in photoelectric devices limit their energy conversion efficiency, and cyclic input of energy coupled with pyroelectricity can overcome this limit. Here, incorporating a pyroelectric absorber into a photovoltaic heterostructure device enables efficient electricity generation by leveraging spontaneous polarization based on pulsed light-induced thermal changes. The proposed pyroelectric-photovoltaic device outperforms traditional photovoltaic devices by 2.5 times due to the long-range electric field that occurs under pulse illumination. Optimization of parameters such as pulse frequency, scan speed, and illumination wavelength enhances power harvesting, as demonstrated by a power conversion efficiency of 11.9% and an incident-photon-to-current conversion efficiency of 200% under optimized conditions. This breakthrough enables reconfigurable electrostatic devices and presents an opportunity to accelerate technology that surpasses conventional limits in energy generation.

Date: 2024
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DOI: 10.1038/s41467-024-47483-2

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