Journal of Materials Chemistry C, Год журнала: 2024, Номер 12(20), С. 7426 - 7434
Опубликована: Янв. 1, 2024
Recent advances in luminescent materials have highlighted zero-dimensional (0D) hybrid metal halides as highly efficient candidates.
Язык: Английский
Advanced Functional Materials, Год журнала: 2023, Номер 33(50)
Опубликована: Авг. 21, 2023
Abstract Currently, lanthanide (Ln 3+ ) doped Pb‐free double perovskites (DPs) suffer from competitive emissions of the self‐trapped exciton (STE) and Ln . Herein, a new type Nd ‐doped Cs 2 AgInCl 6 DPs with Na + /Bi co‐alloying is developed. Benefiting ‐induced local structural modification, both STE broadband visible luminescence near‐infrared (NIR) are boosted via free sensitization. Specifically, total 648‐fold enhancement in emitting intensities compared to ‐free counterpart realized, significantly improved NIR photoluminescence quantum yield (PLQY) 0.16% 30.3%. First‐principles density functional theory calculations, Raman spectra, steady/transient‐state PL spectra verify modification site symmetry, breakdown parity‐forbidden absorption, reduction electron‐phonon coupling doping. Finally, compact vis–NIR light‐emitting diode (LED) designed by Na/Bi/Nd: DP commercial ultraviolet LED chip, which shows promising applications spectroscopic analyses multifunctional lighting.
Язык: Английский
Процитировано
58
Advanced Science, Год журнала: 2024, Номер 11(24)
Опубликована: Апрель 16, 2024
Abstract The smart materials with multi‐color and stimuli‐responsive luminescence are very promising for next generation of optical information encryption anti‐counterfeiting, but these still scarce. Herein, a multi‐level strategy is developed based on the polychromatic emission Sb‐doped double perovskite powders (SDPPs). Cs 2 NaInCl 6 :Sb, KInCl AgInCl :Sb synthesized through coprecipitation methods exhibit broadband emissions bright blue, cyan, orange colors, respectively. transmitted by specific SDPP encrypted when different SDPPs mixed. confidential can be decrypted selecting corresponding narrowband filter. Then, an quick response (QR) code improved security demonstrated this multi‐channel selection strategy. Moreover, three types water‐triggered switching behaviors. represented erased/recovered simple water spray/drying. Whereas, collected from green channel permanently erased moisture, which fundamentally avoids leakage. Therefore, schemes designed to meet variety requirements. multicolor greatly enrich flexibility encryption, leaps level confidentiality.
Язык: Английский
Процитировано
29
Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(24)
Опубликована: Апрель 15, 2024
Exploration of efficient red emitting antimony hybrid halide with large Stokes shift and zero self-absorption is highly desirable due to its enormous potential for applications in solid light emitting, active optical waveguides. However, it still challenging rarely reported. Herein, a series (TMS)
Язык: Английский
Процитировано
20
Nature Communications, Год журнала: 2025, Номер 16(1)
Опубликована: Янв. 11, 2025
Abstract Photoluminescence is one of the most intriguing properties metal nanoclusters derived from their molecular-like electronic structure, however, achieving high photoluminescence quantum yield (PLQY) core-dictated fluorescence remains a formidable challenge. Here, we report efficient suppression total structural vibrations and rotations, management pathways rates electron transfer dynamics to boost near-unity absolute PLQY, by decorating progressive addition cations. Specifically, with sequential Zn 2+ , Ag + Tb 3+ into 3-mercaptopropionic acids capped Au (NCs), low-frequency vibration core progressively decreases 144.0, 55.2 40.0 cm −1 coupling strength electrons-high-frequency related surface motifs gradually diminishes 40.2, 30.5 14.4 meV. Moreover, introducing cation additives significantly reduces time 40, 27 12 ps in pathway staple core. This benefits shrinkage structure that speeds up shell-core transition, particular, provides hopping platform for excited electrons as intrinsic ladder-like energy level structure. As result, it allows remarkable enhancement 51.2%, 83.4%, 99.5%.
Язык: Английский
Процитировано
2
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 29, 2025
Abstract Light‐emitting diodes (LEDs) based on halide perovskite nanocrystals have attracted extensive attention due to their considerable luminescence efficiency, wide color gamut, high purity, and facile material synthesis. Since the first demonstration of LEDs MAPbBr 3 was reported in 2014, community has witnessed a rapid development performances. In this review, historical perspective is provided then comprehensive survey current strategies for high‐efficiency lead‐based LEDs, including synthesis optimization, ion doping/alloying, shell coating presented. Then basic characteristics emission mechanisms lead‐free perovskite‐related emitters environmentally friendly from standpoint different colors are reviewed. Finally, progress LED applications covered an outlook opportunities challenges future developments field provided.
Язык: Английский
Процитировано
2
Chemical Science, Год журнала: 2023, Номер 15(3), С. 953 - 963
Опубликована: Дек. 6, 2023
0D hybrid indium halide exhibits near-unity PLQY and negligible self-absorption realizing multiple cutting-edge optoelectronic applications in high-performance white LED, X-ray scintillation reversible fluorescent probe toward tribromomethane.
Язык: Английский
Процитировано
26
Journal of Materials Chemistry C, Год журнала: 2023, Номер 11(48), С. 16890 - 16911
Опубликована: Янв. 1, 2023
In this review, the organic luminescence properties of low-dimensional organic–inorganic hybrid metal halides (LDMHs) are summarized, with emphasis on mechanism, regulating strategy and applications in LDMHs.
Язык: Английский
Процитировано
25
Chemistry of Materials, Год журнала: 2024, Номер 36(2), С. 901 - 910
Опубликована: Янв. 9, 2024
Broadband near-infrared (NIR) luminescent materials hold the key to next-generation, smart, NIR light sources. The emerging halide perovskite are regarded as promising candidates for optoelectronics because of their superior optical properties and easy solution processability. However, it remains a major challenge realize efficient thermally stable broadband luminescence in these materials. Herein, we report novel strategy achieve by utilizing transitions from lowest 1T2 level Mo4+ components its 3T1 ground state soft Cs2Zr(Cl,Br)6 lattice. multiple transitions, each occurring within (4d2) t22 crystal-field configuration containing zero-phonon vibronic contributions, superimpose on other generate emission. emission spectrum encompasses long wavelength region 800 1400 nm centered at 970 with full width half-maximum 170 nm. More importantly, title phosphor shows an exceptional quantum efficiency (66.9%) thermal stability (67%@150 °C). as-fabricated phosphor-converted light-emitting diode great potential lighting source. This research opens new horizon realizing high-performance exploiting electronic activators
Язык: Английский
Процитировано
12
Chemical Science, Год журнала: 2024, Номер 15(10), С. 3530 - 3538
Опубликована: Янв. 1, 2024
The chirality-dependent lattice distortion assisted by a crown ether leads to an intense STEs emission along with CPL. distinct endows the Sb halides multi-stimuli-responsive PL behaviours towards excitation wavelength and temperature.
Язык: Английский
Процитировано
11
Journal of Luminescence, Год журнала: 2024, Номер 269, С. 120525 - 120525
Опубликована: Фев. 28, 2024
Язык: Английский
Процитировано
11