153 research outputs found
Interfacial interactions of doped-Ti3C2 MXene/MAPbI3 heterostructures: surfaces and the theoretical approach
No full textRaw data for the original article: Purbayanto, Muhammad Abiyyu Kenichi, et al. "Interfacial interactions of doped-Ti 3 C 2 MXene/MAPbI 3 heterostructures: surfaces and the theoretical approach." Physical Chemistry Chemical Physics 25.48 (2023): 33081-33093.</p
The incorporation of CsCu2I3 nanocrystals into polydimethylsiloxane matrix for X- and γ-ray scintillators
No full textRaw data was presented in the following manuscript: T. Haposan, M. Makowski, D. Kowal, L.J. Diguna, M.E. Witkowski, S. Mahato, W. Drozdowski, A. Arramel, M.D. Birowosuto, The Incorporation of CsCu2I3 Nanocrystals into Polydimethylsiloxane Matrix for X- and γ-Ray Scintillators, Phys. Status Solidi RRL 19, (2025) 24010298. https://doi.org/10.1002/pssr.202400298.The attached ZIP contains data of radioluminescence (RL) as a function of temperature, pulse height spectra (PHS) and scintillation time profile (STP) of CsCu2I3 nanocrystals embedded in polydimethylsiloxane matrix.</p
Photonics Gets a Makeover: The New Era of Perovskite Devices
No full textThe story of perovskite materials dates back over a century to the discovery of calcium titanate, known for its nearly cubic crystal structure [...
Large-Area Photonic Bound State in the Continuum for Ultraviolet and Deep-Blue Emission for Organic, Inorganic, and Perovskite Scintillators
No full textOptimizing the emission properties of materials in ultraviolet and deep blue (UV-DB) is interesting in the development of new scintillator devices for the detection of X-ray, ray, and radiation particles, as those materials can be strong candidates for high light yield and fast scintillators. While their intrinsic material properties are already well studied, photonic enhancement generated through optical confinement could significantly improve their emission characteristics; however, one needs to overcome the problem of relatively low refractive indices contrast resulting in poor confinement of UV-DB light. This motivates the search for resonator structures built from readily accessible materials that can boast strong confinement in this spectral regime. Here, we present such a structure, leveraging bound states in the continuum (BICs) to realize large-area confinement of UV-DB light with ultrahigh quality factors up to Q 107. These ultrahigh Q -factors, in turn, result in strong enhancements in light emission via the Purcell effect. We demonstrate the operation of such a design by simulating the mode shape, Q -factor, and emission behavior in organic, hybrid perovskite, and III-V scintillating materials. By tailoring the structure geometry, it can be robustly tuned to match the emission characteristics of chosen materials. We start with considering ideal infinite structure supporting perfect BIC; we extend our model on finite-sized structures, and we discuss the limitations associated with the self-absorption and thickness of the structure. Our findings pave the way to cost-effective and efficient designs for scintillators in the UV-DB regime.This work was supported by the Starting Grant of Lukasiewicz Research Network-PORT Polish Center for Technology Development
Perovskites to Photonics: Engineering NIR LEDs for Photobiomodulation
No full textPhotobiomodulation (PBM) harnesses near-infrared (NIR) light to stimulate cellular processes, offering non-invasive treatment options for a range of conditions, including chronic wounds, inflammation, and neurological disorders. NIR light-emitting diodes (LEDs) are emerging as safer and more scalable alternatives to conventional lasers, but optimizing their performance for clinical use remains a challenge. This perspective explores the latest advances in NIR-emitting materials, spanning Group III–V, IV, and II–VI semiconductors, organic small molecules, polymers, and perovskites, with an emphasis on their applicability to PBM. Particular attention is given to the promise of perovskite LEDs, including lead-free and lanthanide-doped variants, for delivering narrowband, tunable NIR emission. Furthermore, we examine photonic and plasmonic engineering strategies that enhance light extraction, spectral precision, and device efficiency. By integrating advances in materials science and nanophotonics, it is increasingly feasible to develop flexible, biocompatible, and high-performance NIR LEDs tailored for next-generation therapeutic applications
Metal/Perovskite Plasmonic–Photonic Heterostructures for Active and Passive Detection Devices
No full textRecent advancements in metal/perovskite photodetectors have leveraged plasmonic effects to enhance the efficiency of photogenerated carrier separation. In this work, we present an innovative approach to designing heterostructure photodetectors that involved integrating a perovskite film with a plasmonic metasurface. Using finite-difference time-domain (FDTD) simulations, we investigated the formation of hybrid photonic–plasmonic modes and examined their quality factors in relation to loss mechanisms. Our results demonstrate that these hybrid modes facilitated strong light confinement within the perovskite layer, with significant intensity enhancement at the metal–perovskite interface—an ideal condition for efficient charge carrier generation. We also propose the use of low-bandgap perovskites for direct infrared passive detection and explore the potential of highly Stokes-shifted perovskites for active detection applications, including ultraviolet and X-ray radiation
Ce3+ activated LaBr3?xIx: High-light-yield and fast-response mixed halide scintillators
No full textHere, we report the scintillation properties of LaBr3?xIx:5%Ce3+ with four different compositions of x, i.e., x = 0.75, 1.5, 2, and 2.25. Radioluminescence spectra reveal a shift of the emission wavelength with the LaBr3 to LaI3 ratio. LaBr1.5I1.5:5%Ce3+ shows the highest scintillation light yield of 58?000?photons/MeV, whereas LaBr0.75I2.25:5%Ce3+ shows the fastest scintillation decay time of 12 ns under 662 keV ?-ray excitation. This decay time is faster than that of 16 ns in LaBr3:Ce3+. The temperature dependence of radioluminescence spectra is presented. The structures and lattice parameters of the materials were determined from powder x-ray diffraction.Radiation, Radionuclides and ReactorsApplied Science
High-light-output scintillator for photodiode readout: LuI3:Ce3+
No full textIn this paper, we investigated the scintillation properties of LuI3:Ce3+. Radioluminescence, light output, energy resolution, and ?-scintillation decay are reported. We find an extremely high light output of 98?000±10?000?photons/MeV. LuI3:Ce3+ also gives a very high electron-hole (e-h) pair response when it is coupled with an avalanche photodiode (APD) (92?000±9000?e?h?pairs?MeV). With an APD, a best energy resolution (full width at half maximum over the peak position) of 3.3%±0.3% for 662?keV ? quanta is observed. A combination of an extremely high light output and a good energy resolution makes LuI3:Ce3+ an ideal scintillator for radiation sensor applications. Some drawbacks due to the hygroscopicity and the difficult growth of LuI3:Ce3+ crystals are also discussed.Radiation, Radionuclides and ReactorsApplied Science
Optimizing doping thresholds for enhanced scintillation in 2D hybrid organic–inorganic perovskites
No full textRaw data presented in the manuscript: F. Maddalena, M. Makowski, C. Xiao, M.A.K. Sheikh, D. Kowal, M.E. Witkowski, K.J. Drozdowski, S. Mahato, C. Dujardin, R. Cala, E. Auffray, M.H. Mahyuddin, W. Drozdowski, M.D. Birowosuto, and C. Dang. Optimizing doping thresholds for enhanced scintillation in 2D hybrid organic–inorganic perovskites. FlatChem 47, (2024), 100701. https://doi.org/10.1016/j.flatc.2024.100701.Data consists of absorption spectra (ABS), photoluminescence (PL), time-resolved PL (TRPL), radioluminescence (RL), thermoluminescence (TL), time-resolved RL (TRRL), pulse height spectra (PHS), scintillation time profiles (STP) and Raman spectra of Ba1-xtBuxPbBr4 where X = 0, 0.1, 0.2 and 0.4.All files attached in ZIP format are split to contain full characterization data for 1 sample, the name of the ZIP corresponds with the sample compisiont.</p
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