Pressure-Induced Distinct Self-Trapped Exciton Emission in Sb3+-Doped Cs2NaInCl6 Double Perovskite DOI Creative Commons

Youjia Feng,

Yaping 亚平 Chen 陈,

Leyao Wang

et al.

Chinese Physics Letters, Journal Year: 2024, Volume and Issue: 41(6), P. 063201 - 063201

Published: May 8, 2024

Abstract The Cs 2 NaInCl 6 double perovskite is one of the most promising lead-free perovskites due to its exceptional stability and straightforward synthesis. However, it faces challenges related inefficient photoluminescence. Doping high pressure are employed tailor optical properties . Herein, Sb 3+ doped (Sb :Cs ) was synthesized exhibits blue emission with a photoluminescence quantum yield up 37.3%. Further, by employing tuning, stable under very wide range from 2.7 GPa 9.8 realized in Subsequently, intensity experiences significant increase (3.3 times) at 19.0 GPa. It revealed that pressure-induced distinct emissions can be attributed carrier self-trapping detrapping between Notably, lattice compression cubic phase inevitably modifies band gap Our findings provide valuable insights into effects further boosting unique characteristics but also offer opportunities for development enhanced functionalities.

Language: Английский

Boosting STE and Nd3+ NIR Luminescence in Cs2AgInCl6 Double Perovskite via Na+/Bi3+‐Induced Local Structure Engineering DOI Open Access

Shilin Jin,

He Yuan,

Tao Pang

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(50)

Published: Aug. 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.

Language: Английский

Citations

59
Advanced Optical Information Encryption Enabled by Polychromatic and Stimuli‐Responsive Luminescence of Sb‐Doped Double Perovskites DOI Creative Commons

Yijun Zhao,

Xingru Yang,

Lun Yang

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: 11(24)

Published: April 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.

Language: Английский

Citations

34
Achieving Near‐Unity Red Light Photoluminescence in Antimony Halide Crystals via Polyhedron Regulation DOI Creative Commons
Jin‐Feng Liao, Zhipeng Zhang, Lei Zhou

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(24)

Published: April 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)

Language: Английский

Citations

23
Light‐Emitting Diodes Based on Metal Halide Perovskite and Perovskite Related Nanocrystals DOI Creative Commons
Ying Liu, Zhuangzhuang Ma, Jibin Zhang

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 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.

Language: Английский

Citations

5
Sequential addition of cations increases photoluminescence quantum yield of metal nanoclusters near unity DOI Creative Commons

Xue Wang,

Yuan Zhong, Tingting Li

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 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%.

Language: Английский

Citations

3
A 0D hybrid lead-free halide with near-unity photoluminescence quantum yield toward multifunctional optoelectronic applications DOI Creative Commons
Dongyang Li,

Huai-Yuan Kang,

Yuhang Liu

et al.

Chemical Science, Journal Year: 2023, Volume and Issue: 15(3), P. 953 - 963

Published: Dec. 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.

Language: Английский

Citations

29
Regulation and application of organic luminescence from low-dimensional organic–inorganic hybrid metal halides DOI
Shanshan Gao, Shuaiqi Wang,

Junyan Wu

et al.

Journal of Materials Chemistry C, Journal Year: 2023, Volume and Issue: 11(48), P. 16890 - 16911

Published: Jan. 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.

Language: Английский

Citations

25
Broadband Near-Infrared Luminescence from Mo4+ in Zero-Dimensional Perovskite Cs2Zr(Cl,Br)6 with an Exceptionally High Quantum Efficiency and Thermal Stability DOI
Zhongyuan Li, Mengdi Xu,

Wuqi Liu

et al.

Chemistry of Materials, Journal Year: 2024, Volume and Issue: 36(2), P. 901 - 910

Published: Jan. 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

Language: Английский

Citations

13
Transient Photoinduced Pb2+ Disproportionation for Exciton Self-Trapping and Broadband Emission in Low-Dimensional Lead Halide Perovskites DOI
Yao Zhang, Leilei Zhu,

Zhaoxia Yang

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(11), P. 7831 - 7838

Published: March 6, 2024

Low-dimensional lead halide perovskites with broadband emission hold great promise for single-component white-light-emitting (WLE) devices. The origin of their has been commonly attributed to self-trapped excitons (STEs) composed localized electronic polarization a distorted lattice. Unfortunately, the exact and structural nature STE species in these WLE materials remains elusive, hindering rational design high-efficiency materials. In this study, by combining ultrafast transient absorption spectroscopy ab initio calculations, we uncover surprisingly similar features two prototypical low dimensional perovskite single crystals: 1D (DMEDA)PbBr4 2D (EDBE)PbBr4, despite different dimensionalities. Photoexcited rapidly localize intrinsic STEs within ∼250 fs, contributing white light emission. Crucially, both systems exhibit characteristic akin those Pb+ Pb3+. Further atomic level theoretical simulations confirm photoexcited electrons holes are on Pb2+ site form Pb+- Pb3+-like species, resembling photoinduced disproportionation. This study provides conclusive evidence key excited state exciton self-trapping paves way

Language: Английский

Citations

12
Multi-stimuli-responsive luminescence enabled by crown ether anchored chiral antimony halide phosphors DOI Creative Commons
Xiao Han,

Puxin Cheng,

Shanshan Han

et al.

Chemical Science, Journal Year: 2024, Volume and Issue: 15(10), P. 3530 - 3538

Published: Jan. 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.

Language: Английский

Citations

11