The precise quantification of the impact photoluminescence reabsorption (PLr) in metal-halide perovskite solar cells (PSCs) remains challenging. Herein, PLr effect is examined by combined time-resolved (TRPL) spectroscopy and terahertz (TRTS) a model proposed that relates both, nonradiative recombination rate (knr) to quasi-Fermi-level splitting (QFLS). shown be beneficial for QFLS when below c...

Drosophila phototransduction results in the opening of two classes of cation channels, composed of the channel subunits transient receptor potential (TRP), TRP-like (TRPL), and TRPgamma. Here, we report that one of these subunits, TRPL, is translocated back and forth between the signaling membrane and an intracellular compartment by a light-regulated mechanism. A high level of rhabdomeral TRPL,...

The light-activated channels of Drosophila photoreceptors transient receptor potential (TRP) and TRP-like (TRPL) show voltage-dependent conductance during illumination. Recent studies implied that mammalian members of the TRP family, which belong to the TRPV and TRPM subfamilies, are intrinsically voltage-gated channels. However, it is unclear whether the Drosophila TRPs, which belong to the TR...

The emission properties of Eu doped GaN thin films prepared by interrupted growth epitaxy (IGE) were investigated through excitation-wavelength dependent and time-resolved photoluminescence (PL) studies. Under above-gap excitation (333-363 nm) large differences were observed in the Eu PL intensity and spectral features as a function of Ga shutter cycling time. The overall strongest red Eu PL in...

We have studied time-resolved photoluminescence (PL) from negatively-charged excitons (Xÿ) in GaAs quantum wells at high magnetic ®elds. The PL decay time of Xÿ showed large increase in magnetic ®elds perpendicular to the well layers. This results from a reduction of coherence volume when the translational motion of charged Xÿ is con®ned by cyclotron orbit. In contrast, no such increase was see...

We have compared the time integrated photoluminescence ~PL! and the time resolved PL of several lattice matched InGaAs/InP quantum wells intermixed either by ion implantation or an impurity-free method. We have found that the carrier capture rates into quantum wells and carrier relaxation from the wells depend on the type of intermixing used. Our results indicate that the carrier lifetimes are ...

Monocrystalline cubic and/or monoclinic Y2O3:Eu nanoparticles (10-50 nm) were synthesized continuously without post-processing by single-step flame spray pyrolysis (FSP). These particles were characterized by Xray diffraction (XRD), nitrogen adsorption (BET) and transmission electron microscopy (TEM). Photoluminescence (PL) emission was measured as well as the time-resolved PL-intensity decay. ...

Abstract Ternary Ag-In-S and quaternary Ag-In-Zn-S nanoparticles with different ratio of Ag/In/Zn/S are synthesized. The incorporation Zn into leads to the increase in optical bandgap blue shift photoluminescence (PL). properties these significantly dependent on chemical composition nanoparticles. Time-resolved PL spectroscopy nanosecond time regime is used study recombination processes carrier...

Recycling of signaling proteins is a common phenomenon in diverse signaling pathways. In photoreceptors of Drosophila, light absorption by rhodopsin triggers a phospholipase Cβ-mediated opening of the ion channels transient receptor potential (TRP) and TRP-like (TRPL) and generates the visual response. The signaling proteins are located in a plasma membrane compartment called rhabdomere. The ma...

We demonstrate a new doping scheme where photo-induced carriers from graphene quantum dots (GQDs) can be injected into GaN and greatly enhance photoluminescence (PL) in GaN epilayers. An 8.3-fold enhancement of PL in GaN is observed after the doping. On the basis of time-resolved PL studies, the PL enhancement is attributed to the carrier transfer from GQDs to GaN. Such a carrier transfer proce...