Journal of Material Science and Technology, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 1, 2024
Language: Английский
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 10, 2025
Abstract Recently, lead‐free double perovskites have gained much attention for their superior optoelectronic properties. However, realizing efficient white light and near‐infrared (NIR) emission, as well bright radioluminescence (RL) in a single compound has not yet been reported. Herein, Bi 3+ /Mo 4+ ‐codoped Cs 2 Ag 0.6 Na 0.4 InCl 6 perovskite is synthesized by hydrothermal reaction. Under photoexcitation, the codoped exhibits highly broadband warm‐white emission (610 nm) NIR (930 nm), which can be attributed to self‐trapped exciton of d–d transition Mo , respectively. Interestingly, also emits strong with yield 25100 photons per MeV under X‐ray irradiation. Based on /PDMS flexible film, its applications emitting diodes (WLED), source, scintillator are demonstrated, respectively, all exhibit remarkable Finally, as‐fabricated devices light, NIR, imaging further demonstrated pixel‐level image fusion realized without pixel mismatch complex processing. Therefore, internal information capsule wrapped centrifuge tube iron wire successfully through fusion.
Language: Английский
Citations
0
Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)
Published: April 15, 2025
Abstract This study provides a comprehensive analysis of the electronic structure, reflectivity, and luminescent spectra organic-inorganic, metal-halide MAPbCl 3 perovskite, which has considerable potential for various optoelectronic applications. Using density functional theory (DFT) calculations, we investigated structure interpreted key features its reflectivity across wide energy range from to 10 eV. The reveal prominent excitonic at 3.22 eV near absorption edge additional optical transitions higher energies, highlighting material’s intricate structure. Furthermore, examined temperature dependence radiative decay dynamics under high-energy radiation through X-ray luminescence time measurements. We observe emission free bound excitons with an exceptionally short (≤ 1 ns) significant thermal quenching low temperatures (100 K) in 385–430 nm range. These findings underline importance continued exploration properties material enhance performance practical
Language: Английский
Citations
0
Applied Physics Letters, Journal Year: 2025, Volume and Issue: 126(8)
Published: Feb. 1, 2025
Metal halide perovskites are the most promising candidates in field of X-ray detection and imaging. However, self-absorption toxicity lead-based severely limit their widespread application. Herein, zirconium-based have attracted much attention due to excellent stability, low toxicity, suitable bandgap, self-free absorption, wide emission spectrum. In this work, (C8H20N)2ZrCl6 single crystals synthesized by evaporation crystallization, which presents a large Stokes shift 203 nm, high PLQY 80.77%, good stability over 180 days. Then, assembled (C8H20N)2ZrCl6@PDMS films show flexibility (bending stretching) spatial resolution 5.8 lp/mm. Thus, work not only provides route explore lead-free metal with broadband but also demonstrates flexible scintillators for scintillation
Language: Английский
Citations
0
Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180365 - 180365
Published: April 1, 2025
Language: Английский
Citations
0
Chem, Journal Year: 2025, Volume and Issue: unknown, P. 102534 - 102534
Published: April 1, 2025
Language: Английский
Citations
0
Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown
Published: April 25, 2025
Abstract Cs 3 Cu 2 Cl 5 nanocrystals (NCs) have emerged as promising optoelectronic materials owing to their efficient self‐trapped exciton (STE) emission. However, limited environmental stability has significantly constrained application in light‐emitting diodes (LEDs). In this work, a facile ambient‐air synthesis strategy is developed for Mg ⁺‐doped NCs that simultaneously addresses both and emission efficiency challenges. Remarkably, optimal ⁺ doping (20%) enhances the photoluminescence quantum yield (PLQY) from 28.69% 59.3%. Comprehensive theoretical investigations through density of states (DOS) calculations ab initio molecular dynamics (AIMD) simulations demonstrate induces bandgap narrowing enhanced radiative recombination while reinforcing crystal lattice stability. When integrated with UV LED chip, optimized enable fabrication high‐performance green LEDs exhibiting outstanding luminance (17 281 cd m − ) excellent color (CIE coordinates: 0.354, 0.518). This study provides not only practical synthetic approach stable copper halide but also valuable insights designing STE emitters applications.
Language: Английский
Citations
0
Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 28, 2025
Abstract The trade‐off between high radioluminescence (RL) and fast decay time is a common challenge facing almost all X‐ray scintillators. Organic fluorescence scintillators, with ultrafast response, readily available, low cost, are promising for imaging detection. Here, organic cocrystals of halogen‐bonded acceptors donors heavy halogen atoms (Br I) designed fabricated to achieve RL simultaneously. noncovalent interactions in play the following roles: 1) strong bonds C≡N···X (X = I, Br) promoted by providing effective pathways electron transfer, whereas relatively weaker C–X···π do not contribute this enhancement. 2) Halogen‐bonded can accelerate decay, resulting as interaction strength increases. 3) π–π modified their molecular packing affect fluorescence. Through modulation these interactions, cocrystal 1,4‐bis‐p‐cyanostyrylbenzene (CSB) 1,4‐diiodotetrafluorobenzene (IFB) exhibited best scintillation performance lifetime 0.58 ns detection limit 144.59 nGy s −1 , achieving resolution 10 lp mm . design combined cocrystallization strategy provides new insights into designing scintillator advanced applications.
Language: Английский
Citations
0
Optical Materials X, Journal Year: 2024, Volume and Issue: unknown, P. 100380 - 100380
Published: Nov. 1, 2024
Language: Английский
Citations
2
Nanotechnology, Journal Year: 2024, Volume and Issue: 35(44), P. 445601 - 445601
Published: Aug. 2, 2024
Cesium lead bromide (CsPbBr
Citations
1
Journal of Material Science and Technology, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 1, 2024
Language: Английский
Citations
0