Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1010, P. 177375 - 177375
Published: Nov. 3, 2024
Language: Английский
physica status solidi (RRL) - Rapid Research Letters, Journal Year: 2024, Volume and Issue: 18(5)
Published: Jan. 25, 2024
Lead‐containing halide perovskite materials’ toxicity and instability severely restrict their ability to be used in further commercial applications. Herein, a new lead‐free thermal stable Cs 12 Zn 3.1 Mn 0.9 Cl 20 material obtained via simple room temperature precipitation method is reported. A high photoluminescence quantum yield of 83.1% can from the , which typically made up tetragonal vertices excitable by ultraviolet (UV) light. More importantly, relative (PL) intensity still retains roughly 60% that at 30 °C when continuously increases 130 °C. The time‐resolved PL decay lifetime calculated 3.40 ms. With color coordinates (0.208 0.683) provided Commission Internationale de L’Eclairage (CIE), bright green light‐emitting diode (LED) created using green‐emitting material. Meanwhile, warm white LED device with CIE (0.374, 0.289) low color‐correlated 3245 K fabricated combining blue red‐emitting phosphors on UV InGaN chip.
Language: Английский
Citations
1
Applied Physics A, Journal Year: 2024, Volume and Issue: 130(4)
Published: April 1, 2024
Language: Английский
Citations
1
Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 12(24)
Published: June 10, 2024
Abstract The development of environmentally friendly full‐inorganic luminescent materials with tunable emission properties and exceptional thermal stability is paramount importance for applications in optoelectronic devices, solid‐state lighting, anti‐counterfeiting technologies. In this study, a novel crystal based on calcium perovskites Cs 2 CaCl 4 ·2H O (CCCH) are explored using hydrothermal method. Simultaneous co‐doping CCCH Sn 2+ Mn yields the s‐p transition‐induced cyan light from d‐d yellow . It demonstrates effective energy transfer self‐trapped exciton (STE) matrix transition to , synergizing composite white lights colors. Furthermore, incorporation into introduces red shift blue remarkable enhancement intensity by factor 12 times. orbital Hamiltonian populations (─COHP) calculations revealed crucial role lattice stability, as evidenced decomposition temperature exceeding 305 °C CCCH:Sn ,Mn whereas 210 undoped matrix. This research provides comprehensive investigation crystal, holding significant promise practical technological advancements lighting
Language: Английский
Citations
1
Small, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 27, 2024
Abstract Doping of ns 2 metal ions as an energy transfer (ET) bridge can significantly elevate the photoluminescence properties. Nonetheless, fundamental influence on local lattice structures remains unclear, hindering advancement functional materials. Herein, Sb 3+ doped rare earth double perovskites is employed a typical case to demonstrate this issue. It found that isoelectronic doping not only enhances ET efficiency but also changes their localized electronic and structures. Both density theory (DFT) Judd–Ofelt (J–O) calculations provide unambiguous evidence enables more charge in [LnCl 6 ] 3− (Ln: Lanthanide) octahedron reduces symmetry environment around Ln , facilitating radiative transition rates while enhancing efficiency. Compared with Cs NaScCl :Ln :Sb /Ln enhanced by 1.5‐fold, reaching up 98.3%. To best available knowledge, work first unravel intrinsic mechanism process enabled via DFT J–O theory. This research sheds light understanding photophysics rational design perovskite
Language: Английский
Citations
1
Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1010, P. 177375 - 177375
Published: Nov. 3, 2024
Language: Английский
Citations
1