Sándor Kollarics
YOU?
Author Swipe
View article: A Versatile System for Photoconductance Decay Measurement Across a Wide Range of Semiconductor Materials
A Versatile System for Photoconductance Decay Measurement Across a Wide Range of Semiconductor Materials Open
Time-resolved photoconductivity is widely used to characterize non-equilibrium charge-carrier lifetime, impurity content, and solar cell efficiency in a broad range of semiconductors. Most measurements are limited to the detection of refle…
View article: Dynamics of Photoinduced Charge Carriers in Metal-Halide Perovskites
Dynamics of Photoinduced Charge Carriers in Metal-Halide Perovskites Open
The measurement and description of the charge-carrier lifetime (τc) is crucial for the wide-ranging applications of lead-halide perovskites. We present time-resolved microwave-detected photoconductivity decay (TRMCD) measurements and a det…
View article: Millisecond‐Scale Charge‐Carrier Recombination Dynamics in the CsPbBr<sub>3</sub> Perovskite
Millisecond‐Scale Charge‐Carrier Recombination Dynamics in the CsPbBr<sub>3</sub> Perovskite Open
Understanding the recombination lifetime of charge carriers () is essential for the diverse applications of photovoltaic materials, such as perovskites. The study on the inorganic perovskite, CsPbBr 3 , reveals recombination dynamics excee…
View article: Terahertz emission from diamond nitrogen-vacancy centers
Terahertz emission from diamond nitrogen-vacancy centers Open
Coherent light sources emitting in the terahertz range are highly sought after for fundamental research and applications. Terahertz lasers rely on achieving population inversion. We demonstrate the generation of terahertz radiation using n…
View article: DNA mismatch repair protects the genome from oxygen-induced replicative mutagenesis
DNA mismatch repair protects the genome from oxygen-induced replicative mutagenesis Open
DNA mismatch repair (MMR) corrects mismatched DNA bases arising from multiple sources including polymerase errors and base damage. By detecting spontaneous mutagenesis using whole genome sequencing of cultured MMR deficient human cell line…
View article: Beyond 1 ms Charge-Carrier Recombination Dynamics in the CsPbBr3 Perovskite
Beyond 1 ms Charge-Carrier Recombination Dynamics in the CsPbBr3 Perovskite Open
Knowledge of the charge-carrier recombination lifetime, tau, is crucial for the various applications of photovoltaic perovskites. We studied the novel inorganic perovskite, CsPbBr3 and we observe recombination dynamics beyond 1 ms below 20…
View article: Ultralong Charge Carrier Recombination Time in Methylammonium Lead Halide Perovskites
Ultralong Charge Carrier Recombination Time in Methylammonium Lead Halide Perovskites Open
Due to their exceptional photovoltaic properties, metal halide perovskites (MHPs) are extensively studied for their potential applications in solar cells. In recent years, the power conversion efficiencies of MHPs-based solar cells rapidly…
View article: Ultrahigh nitrogen-vacancy center concentration in diamond
Ultrahigh nitrogen-vacancy center concentration in diamond Open
View article: Non-exponential magnetic relaxation in magnetic nanoparticles for hyperthermia
Non-exponential magnetic relaxation in magnetic nanoparticles for hyperthermia Open
View article: Optical–Microwave Pump–Probe Studies of Electronic Properties in Novel Materials
Optical–Microwave Pump–Probe Studies of Electronic Properties in Novel Materials Open
Combined microwave–optical pump–probe methods are emerging to study the quantum state of spin qubit centers and the charge dynamics in semiconductors. A major hindrance is the limited bandwidth of microwave irradiation/detection circuitry …
View article: Tuning Conductivity and Spin Dynamics in Few‐Layer Graphene via In Situ Potassium Exposure
Tuning Conductivity and Spin Dynamics in Few‐Layer Graphene via In Situ Potassium Exposure Open
Chemical modification such as intercalation or doping of novel materials is of great importance for exploratory material science and applications in various fields of physics and chemistry. Herein, the systematic intercalation of chemicall…
View article: Incidence of Quantum Confinement on Dark Triplet Excitons in Carbon Nanotubes
Incidence of Quantum Confinement on Dark Triplet Excitons in Carbon Nanotubes Open
The photophysics of single-wall carbon nanotubes (SWCNTs) is intensively studied due to their potential application in light harvesting and optoelectronics. Excited states of SWCNTs form strongly bound electron-hole pairs, excitons, of whi…
View article: An optically detected magnetic resonance spectrometer with tunable laser excitation and wavelength resolved infrared detection
An optically detected magnetic resonance spectrometer with tunable laser excitation and wavelength resolved infrared detection Open
We present the development and performance of an optically detected magnetic resonance (ODMR) spectrometer. The spectrometer represents advances over similar instruments in three areas: (i) the exciting light is a tunable laser source whic…