in this study, a general theoretical model to foresee and calculate the current-voltagecharacteristics in a plateau zone and the associated efficiency of the neutron detector (sensitivity) is presented. this study is to complete the previous studies in this field. the model also considers electric field distortion resulting from the charge collection effect. the characteristics curve is obtaine...

While transient photoluminescence measurements are a very popular tool to monitor the charge-carrier dynamics in field of halide perovskite photovoltaics, interpretation data obtained on multilayer samples is highly challenging due superposition various effects that modulate concentration layer and thereby measured PL. These include bulk interfacial recombination, charge transfer electron or ho...

Synthesis of low-cost, eco-friendly, semiconducting solar-energy materials with excellent photocatalytic activity [high surface area, good reactant adsorption, photon harnessing in the visible region, and low charge recombination] for application in...

Schematic illustration of light harvesting and role Ti 1− x Fe O 2 photoanodes in PCE enhancement. This enhanced is ascribed to the increased surface adsorption reduced charge recombination via new electron state creation with 3+ doping.

Two novel unfused acceptors, ABBT-BO(DT), featuring 1,4-azaborine have been synthesized. ABBT-BO based OSCs achieved an optimal PCE of over 10% for higher exciton dissociation, improved carrier transport and suppressed charge recombination.

The trap-assisted recombination of electrons and holes in organic semiconductors is investigated. The extracted capture coefficients of the trap-assisted recombination process are thermally activated with an identical activation energy as measured for the hole mobility μ(p). We demonstrate that the rate limiting step for this mechanism is the diffusion of free holes towards trapped electrons in...

This study investigated theoretical photoinduced charge transport in a bulk heterojunction (BHJ) solar cell controlled by an external electric field. Our method for visualizing charge difference density identified the excited state properties of photoinduced charge transfer, and the charge transfer excited states were distinguished from local excited states during electronic transitions. Furthe...

Semiconducting single-walled carbon nanotube/fullerene bulk heterojunctions exhibit unique optoelectronic properties highly suitable for flexible, efficient, and robust photovoltaics and photodetectors. We investigate charge-transfer dynamics in inverted devices featuring a polyethylenimine-coated ZnO nanowire array infiltrated with these blends and find that trap-assisted recombination dominat...

We employ transient absorption spectroscopy to record the absorption spectrum of photogenerated charge carriers in Cu2O. We have found that CO2 reduction in Cu2O is limited by fast electron-hole recombination. The deposition of RuOx nanoparticles on Cu2O results in a twofold increased yield of long-lived electrons, indicating partially reduced electron-hole recombination losses. This observatio...

Ultrafast all-optical switching is demonstrated in an oxygen-ion implanted silicon-oninsulator microring resonator. The spectral response of the device is rapidly modulated via femtosecond optical excitation and subsequent recombination of charge carriers at artificially introduced ultrafast recombination centers. At an implantation dose of 1 × 1012 cm−2 the carrier lifetime is reduced to 55 ps...