Charge transfer dynamic in van der waals heterojunctions formed by thiophene-based semiconductor polymer and exfoliated franckeite Investigated from resonantly core excited electron

Organic/inorganic van der Waals heterojunctions formed by a combination of 2D materials with semiconductor polymer films enable the fabrication of new device architectures that are interesting for electronic and optoelectronic...

Construction of CdSe-AuPd quantum dot 0D/0D hybrid photocatalysts: Charge transfer dynamic study with electrochemical analysis for improved photocatalytic activity

Integration of semiconductor quantum dot and noble metal nanoparticles can efficiently couple numerous effects corresponds to the individual domains of the hybrid system for varieties of applications. Herein, we establish...

Optical-field driven charge-transfer modulations near composite nanostructures

Optical activation of material properties illustrates the potentials held by tuning light-matter interactions with impacts ranging from basic science to technological applications. Here, we demonstrate for the first time that composite nanostructures providing nonlocal environments can be engineered to optically trigger photoinduced charge-transfer-dynamic modulations in the solid state. The nanostructures explored herein lead to out-of-phase behavior between charge separation and recombination dynamics, along with linear charge-transfer-dynamic variations with the optical-field intensity. Using transient absorption spectroscopy, up to 270% increase in charge separation rate is obtained in organic semiconductor thin films. We provide evidence that composite nanostructures allow for surface photovoltages to be created, which kinetics vary with the composite architecture and last beyond optical pulse temporal characteristics. Furthermore, by generalizing Marcus theory framework, we explain why charge-transfer-dynamic modulations can only be unveiled when optic-field effects are enhanced by nonlocal image-dipole interactions. Our demonstration, that composite nanostructures can be designed to take advantage of optical fields for tuneable charge-transfer-dynamic remote actuators, opens the path for their use in practical applications ranging from photochemistry to optoelectronics.