ArticleSmall (Weinheim an der Bergstrasse, Germany)2026
More Photocatalysis With Less Light in Polar Semiconductors-The Role of Pyroelectric Fields.
Article in Small (Weinheim an der Bergstrasse, Germany), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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7 authors.
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Abstract
Photocatalysis is an energy conversion process, where its efficiency is expressed as the ratio of formed or broken bond energy to solar energy. While the light-induced charge transport behind photovoltaics and photocatalysis is the same, photocatalysis includes the additional step of adsorption/desorption. For the case of wastewater remediation, the conversion efficiency from solar-to-chemical energy is several orders of magnitude lower than photovoltaic. This underlines that the light-induced charge transport is not the rate-limiting step of photocatalysis and thus its optimization has very limited potential. Here, we present the case where modulated solar irradiation removes approximately 50% of photons compared to continuous irradiation, and still achieves an increase in photocatalytic performance. This overcompensation originates from the effect of pyroelectric fields from the polar BaTiO
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