ADVANCED FUNCTIONAL MATERIALS
·
2024
·Vol. 34
·期 34
·2401860
·
IF 18.5
Guojun Zhou,Yanting Wang,Yilin Mao,Caihong Guo,Jian Zhang,Maxim S. Molokeev,Zhiguo Xia,Xian-Ming Zhang
Hybrid metal halides (HMHs) have emerged as a promising platform for optically functional crystalline materials, but it is extremely challenging to thoroughly elucidate the electron transition coupled to additional ligand emission. Herein, to discover sequences of lead-free HMHs with distinct optically active metal cations are aimed, that is, Sb 3+ (5s 2 ) with the lone-pair electron configuration and In 3+ (4d 10 ) with the fully-filled electron configuration. (Me 2 NH 2 ) 4 M Cl 6 ·Cl (Me = −CH 3 , M = Sb, In) exhibits the superior temperature/component-dependent luminescence behaviors resulting from the competition transition between triplet-states (T n -S 0 ) self-trapped excitons (STEs) of inorganic units and singlet-state (S 1 -S 0 ) of organic cations, which is manipulated by the optical activity levels of [SbCl 6 ] 3− and [InCl 6 ] 3− . The bonding differences between Sb 3+ /In 3+ and Cl − in terms of electronic excitation and hybridization are emphasized, and the different electron-transition mechanisms are established according to the PL spectra at the extreme temperature of 5 to 305 K and theoretical calculations. By fine-tuning the B-site Sb 3+ /In 3+ alloying, the photoluminescence quantum yield (PLQY = 81.5%) and stability are optimized at 20% alloying of Sb 3+ . This research sheds light on the rules governing PL behaviors of HMHs, as well as exploring the optical-functional application of aviation temperature sensors and access-control systems.
研究领域:
材料科学
·
光学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Yuheng Zhang,Gangyi Zhang,Liying Zhu,Yaxuan Li,Tongshu Zhang,Fulong Hao,Lingyi Meng,Huidong Xie,Hu Liu,Zuobin Tang
Luminescent metal halides have garnered significant attention due to their tunable emission characteristics and exceptional optoelectronic properties. Nevertheless, achieving metal halides that exhibit near-infrared (NIR) emission upon blue-light excitation remains a significant challenge. In this study, blue-light-induced NIR emission was successfully realized in the zero-dimensional (0D) (BTP) 2 ZnBr 4 :Sb 3+ single crystal [BTP + :(3-Bromopropyl) triphenylphosphonium cation] via a straightforward energy transfer from the host (BTP) 2 ZnBr 4 to the self-trapped exciton (STE) state generated by Sb 3+ . Upon excitation with blue light, (BTP) 2 ZnBr 4 :12.5 % Sb 3+ exhibits broad NIR emission characterized by a peak at approximately 725 nm, a Stokes shift of about 295 nm, and a notably large full width at half maximum (FWHM) of 179 nm. Additionally, the analysis of experimental data in conjunction with density functional theory (DFT) calculations elucidated the blue light emission mechanism of the host as well as the doped NIR emission. The study demonstrated potential night vision applications by utilizing the (BTP) 2 ZnBr 4 :12.5 % Sb 3+ phosphor combined with a 430 nm light-emitting diode (LED) chip in the dark.
研究领域:
材料科学
·
光学
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DOI
PubMed
高影响因子
PHYSICS OF THE SOLID STATE
·
2026
·Vol. 68
·期 7
·645-650
·
IF 2.4
Huang Jinyan,Li Haichao,Guo Jianxia
Carbon nanomaterials, as pivotal representatives of forefront nanotechnologies, are advancing at a remarkable pace, driving global scientific, industrial, and socio-economic progress. To explore a straightforward yet effective route for the precise control over the morphology and dimensions of carbon nanostructures, this study employed a confined in-situ carbonization strategy. This approach successfully enabled the efficient synthesis of carbon nanosheets with tunable thicknesses under varied synthesis conditions. The resulting carbon nanosheets were systematically characterized using a comprehensive suite of analytical techniques. Scanning electron microscopy (SEM) was employed to examine their morphology and thickness, while Raman spectroscopy, X-ray diffraction (XRD), and Fourier-transform infrared (FTIR) spectroscopy provided insights into their graphitic structure, crystallinity, and surface functional groups, respectively. Additionally, energy-dispersive X-ray spectroscopy (EDS) was utilized for elemental analysis. The data collected from these techniques were integral in guiding and refining the subsequent experimental design. It was hypothesized that by carefully modulating key synthesis parameters—primarily the concentration of the surfactant SB3-12, but also other conditions such as reaction temperature—carbon nanosheets could be efficiently synthesized within a unique reaction environment created by the physical encapsulation of a concentrated potassium sulphate solution. This experimental investigation holds significant value, as it contributes meaningful insights into the development of controllable synthetic methodologies for carbon nanostructures and provides a foundation for future research and application developments in this promising field.
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高影响因子
PHYSICS OF THE SOLID STATE
·
2026
·Vol. 68
·期 10
·880-885
·
IF 2.4
Li Chen,Zhang Huan,Zhen Zihan,Shi Chenglong
Carbon nanomaterials, owing to their unique properties, demonstrate indispensable application value in fields such as environmental science, biomedicine, and sensing technology. However, existing methods still face challenges in achieving precise and controllable preparation of morphology and structure, particularly exhibiting significant limitations in terms of green synthesis and mild conditions. This study proposes a novel and environmentally friendly strategy for the preparation of carbon nanomaterials: the confined in situ carbonization method. This method enables the in situ transformation and structurally directed growth of carbon sources within a confined environment, offering a new approach for morphology control of carbon materials. To comprehensively characterize the structure and properties of the as-prepared materials, various analytical techniques were employed for systematic investigation. Specifically, scanning electron microscopy (SEM) was used to observe the microscopic morphology and size distribution; X-ray diffraction (XRD) was employed to analyze the crystal structure; Raman spectroscopy was applied to assess the degree of graphitization and defect states of the carbon materials; Fourier-transform infrared spectroscopy (FTIR) was utilized to detect surface functional groups; and energy-dispersive X-ray spectroscopy (EDS) was combined to determine the elemental distribution.Using this method, carbon nanospheres with a diameter of approximately 10 nm were successfully prepared, and their structural properties were systematically analyzed.
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高影响因子
INORGANIC CHEMISTRY
·
2026
·Vol. 65
·期 30
·17417-17424
·
IF 4.6
Chen Xiangxiang,Zhang Tong,Sun Wenda,Li Yue,Wang Yiwei,Wang Junhan,Yang Huanxin,Zhang Libing,Yue Zhao,Li Xiyan
The integration of mechanoluminescence (ML) and thermochromic
behavior
into a single material holds significant promise for applications
in flexible electronics, multidimensional sensing, and interactive
devices. Inorganic halide perovskites, owing to their intrinsic structural
flexibility and tunable bandgap, are excellent candidates for multifunctional
materials. However, research into these combined functionalities has
remained notably limited to date. To bridge this gap and explore the
potential of such material systems for intelligent sensing applications,
this study develops a lead-free Cs 2 ZrCl 6 : Sb 3+ perovskite that exhibits dynamically tunable ML color and
thermally activated emission switching. Through strategic doping,
we combined the intrinsic blue ML of the host with incorporated red-emitting
centers, enabling colorimetric pressure sensing. The material achieved
a remarkable maximum relative sensitivity ( S r ) of 1% K –1 at 300 K. Furthermore, we integrated
it into a novel photoelectric system as a proof of concept that simultaneously
characterized optical intensity and chromaticity. This work not only
elucidates the luminescence mechanisms in lead-free perovskites but
also establishes a new paradigm for developing intelligent, self-diagnostic
ML sensors.
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高影响因子
DEFECT AND DIFFUSION FORUM
·
2025
·
IF 0
Meng Wang,Chuan Yin
Near-infrared emission has been widely used in night vision and smart devices due to their low thermal effects, non-invasion, and appropriate penetration. As a new generation of luminescent materials, metal halides are considered a promising next-generation near-infrared light source. Zinc-based halides have attracted much attention due to their excellent stabilities, low toxicity, and wide band gaps. However, most zinc-based halides composed of non-optically active [ZnX4]2- units exhibit poor photoluminescence quantum yields (PLQYs). In this paper, Sb3+ ions were doped into Cs2ZnCl4 single crystals to regulate their luminescence properties and investigate corresponding emissive mechanisms. Sb3+-doped Cs2ZnCl4 single crystals exhibit efficient near-infrared emission, which is attributed to the self-trapped excitons emission of Sb3+. The prepared near-infrared LEDs based on Sb3+-doped Cs2ZnCl4 exhibit excellent near-infrared imaging performance, demonstrating the potential application of zinc-based halides in military night vision.
研究领域:
材料科学
·
光电子学
·
固体物理
·
发光材料
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DOI
Journal of Materials Chemistry C
·
2024
·Vol. 13
·期 1
·456-464
·
IF 5.7
Xiaoman Zhang,Yehua Zheng,Kun Nie,Xiaodong Zhang,Xiuqiang Duan,Ziyao Hu,Ming Yang,Lefu Mei,Luoxin Wang,Hua Wang,Mingquan Li,Xiaoxue Ma
Lead-free double perovskites are environmentally friendly, and their good photoelectric efficiency has received widespread attention. However, the stability and efficiency of lead-free perovskites need to be further improved to meet the growing application needs. In this study, thermally quenched perovskite (Cs2NaHoCl6) crystals (PCs) were successfully synthesized by co-precipitation. By doping with Sb3+, the excitation wavelength of the original perovskite increased significantly to 250–360 nm, and the emission wavelength of the original perovskite also increased significantly to 660 nm. Cs2NaHoCl6:Sb3+ PCs are made of red and white light-emitting diodes (LEDs) for general lighting applications. In addition, Cs2NaHoCl6:Sb3+ PCs are made into flexible luminescent fibers with aramid/polyphenylene sulfide (ACFs/PPS) composite fibers. Based on the good thermal quenching resistance of Cs2NaHoCl6:Sb3+ PCs, the flexible luminescent fibers showed excellent high-temperature luminescence stability. At 125 °C, flexible luminescent fibers retained 99.8% of the original luminescence intensity; at 250 °C, they retained 75.6% of the original. These flexible luminescent fibers have the potential to be used in fluorescence detection in high-temperature environments. In summary, this study used a simple method to prepare lead-free perovskites with good optical properties and stability, expanding the application of perovskites in the field of fibers.
研究领域:
材料科学
·
光学工程
·
光电子学
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DOI
高影响因子
LANGMUIR
·
2023
·
IF 3.9
Zhilin Li,Qiaoqiao Li,Mengyan Cao,Zhihui Rao,Xinyu Shi,Liujiang Zhou,Xiujian Zhao,Xiao Gong
Low-dimension perovskite materials have attracted wide attention due to their excellent optical properties and stability. Herein, Sb3+-doped Cs2ZrCl6 crystals are synthesized by a coprecipitation method in which Sb3+ ions partially replace Zr4+ ions. The Cs2ZrCl6:xSb3+ powder shows blue and orange–red emissions under a 254 and 365 nm light, respectively, due to the [ZrCl6]2– octahedron and [SbCl6]3– octahedron. The photoluminescence quantum yield (PLQY) of Cs2ZrCl6:xSb3+ (x = 0.1) crystals is up to 52.5%. According to experimental and computational results, the emission mechanism of the Cs2ZrCl6:xSb3+ crystals is proposed. On the one hand, a wide blue emission with a large Stokes shift is caused by the self-trapping excitons of [ZrCl6]2– octahedra under a 260 nm excitation. On the other hand, the luminescence mechanism of [SbCl6]3– octahedron is divided into two parts: 1P1 → 1S0 (490 nm) and 3P1 → 1S0 (625 nm). The broad-band emission, high PLQY, and excellent stability endow the Cs2ZrCl6:xSb3+ powders with the potential for the fabrication of white light-emitting diodes (WLEDs). A WLED device is fabricated using a commercial 310 nm NUV chip, which shows a high color rendering index of 89.7 and a correlated color temperature of 5333 K. In addition, the synthesized Cs2ZrCl6:xSb3+ crystals can be also successfully used for information encryption. Our work will provide a deep understanding of the photophysical properties of Sb3+-doped perovskites and facilitate the development of Cs2ZrCl6:xSb3+ crystals in encrypting multilevel optical codes and WLEDs.
研究领域:
材料科学
·
光学工程
·
物理化学
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DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Pei Jiang,Hao Liang,Jie Sun,Yinhua Wang,Yi Zhang,Meng Zhou,Gang Yang,Yongsheng Zhu
Inorganic lead-free halide double perovskites are attracting significant attention for light-emitting diodes (LEDs), owing to their broad-band emission of self-trapped excitons (STEs) and exceptional environmental friendliness. However, it remains a challenge to modulate their spectra and enhance the photoluminescence quantum yield (PLQY) to meet different application requirements. Herein, a doping route was adopted to incorporate Sb 3+ ions into the Cs 2 NaInCl 6 for enhancing STEs density, and the highest PLQY of Cs 2 NaInCl 6 :3 %Sb 3+ single crystals (SCs) was up to about 84 %. By introducing Mn 2+ ions the emission color was flexibly modulated from blue to red. Especially, white light emission with high color rendering index and tunable correlated color temperature for Sb 3+ , Mn 2+ co-doped Cs 2 NaInCl 6 SCs were realized by high pressure treatment as well as doping commercial green phosphor. These findings provide new inspiration and strategies for the design and synthesis of novel inorganic halide double perovskites with enhanced optoelectronic properties.
研究领域:
材料科学
·
光学
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高影响因子
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
·
2025
·
IF 1.8
Jianxia Guo,Hai-chao Li,Xiaofei Kang
Carbon nanostructures have emerged as a promising component in modern technology and production due to their distinctive properties and varied carbonation states. In this paper, a novel preparation method, termed the ‘bound in situ carbonization’, is proposed to achieve the complete carbonization process by employing the encapsulation of concentrated salt. The morphology and properties of the prepared carbon nanostructures were investigated using a range of analytical methods, including SEM, XPS, XRD, FTIR and Raman. The experimental results yielded carbon nanostructures in the form of small particles, short rods, and sheet-like structures. The experimental preparation method is of significance for the synthesis of carbon nanostructures with tunable morphology and size.
研究领域:
材料科学
·
纳米科技
·
物理化学
·
功能材料
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DOI
高影响因子
Journal of Physical Chemistry C
·
2024
·
IF 3.3
Xiangyan Yun,Yasin Muhammad,Bo Zhou,Zexiang Liu,Shaofan Fang,Hanlin Hu,Ye Wang,Haizhe Zhong,Henan Li,Yumeng Shi
Sb3+ doping endows many metal halide perovskites with diverse and efficient self-trapped exciton (STE) emissions. However, whether the source of STEs is the Sb3+ doping center or the pristine host remains unclear. In this study, we investigated the aliovalent Sb3+-doped RbCdCl3. Spectroscopic analyses before and after annealing showed that the Sb3+ dopant exists as [SbCl5·H2O]2–, which has vastly different optical behavior compared with [SbCl6]3– in other Rb-rich systems. The desorption of the coordinated water molecule results in a significant blue shift of the photoluminescence spectrum from 590 to 515 nm, verifying that environmental polarity has a large effect on STE behavior. Additionally, significant changes were observed in the absorption and photoluminescence excitation spectra of the Sb3+ color centers, while no obvious changes in the host structure were observed. The precise control of the Sb3+ coordination environment provided direct evidence that the STE emission originates from the Sb3+ center. These results clarify the underlying source of STEs in vacancy-related aliovalent ion-doped systems and may guide the design of emerging metal halide perovskite luminescent materials.
研究领域:
材料科学
·
光学
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DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2026
·
IF 3.8
Yuhang Zhao,Lin Lin,Xin Chen,Xinyu Guo,Chenglin Gong,Yingzhen Wu,Zhuohong Feng,Zhezhe Wang,Zheng Li,Zhiqiang Zheng
Zero-dimensional rare-earth halide Cs 3 EuCl 6 : Tb 3+ , Sb 3+ nanocrystals (NCs) were successfully synthesized via a facile heating method. Their optical temperature sensing properties are systematically investigated. By virtue of the efficient energy transfer of Tb 3+ →Eu 3+ and the reduction in site symmetry of luminescent centers at high temperature, the emission peaks of Tb 3+ and Eu 3+ show different temperature response. Based on this, an optical thermometry system based on the fluorescence intensity ratio (FIR) is constructed. The maximum relative sensitivity of Cs 3 EuCl 6 : 40%Tb 3+ NCs reaches 1.301%·K −1 . Further introduction of Sb 3+ co-doping not only remarkably enhances the luminescence intensity of the material, but also raises the maximum relative sensitivity to 1.32%·K −1 . This work confirms that Cs 3 EuCl 6 : Tb 3+ , Sb 3+ NCs are high-performance optical temperature sensing materials with promising application prospects.
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