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The rational design of heterojunctions based on metal halide perovskites (MHPs) is an effective route to create novel photocatalysts to run relevant solar‐driven reactions. In this work, an experimental and computational study on the synergic coupling between a lead‐free Cs3Bi2Br9 perovskite derivative and g‐C3N4 is presented. A relevant boost of the hydrogen photogeneration by more than one order...
Wide bandgap semiconductors such as gallium nitride (GaN) are essential constituents of future optical circuits, as their optical response can accommodate a broad wavelength range while suppressing two-photon absorption and free-carrier absorption effects that are encountered with silicon (Si) structures. Their direct wide bandgap is also favourable for the incorporation of active elements. Furthermore,...
Third-order nonlinear optical phenomena have been intensively studied in integrated structures of crystalline silicon, Hydex, and silicon nitride for different applications, from classical to quantum photonics. As any other material, also porous silicon PSi is characterized by a third-order nonlinear response. Previous works have focused mainly on third-harmonic generation or two-photon absorption...
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