ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Mengyan Cao,Xiujian Zhao,Xiao Gong
The strategy of utilizing all-inorganic lead-free perovskites as the matrix to form synergies with complementary functional nanomaterials has attracted great interest. In this study, a simplified one-pot method that is employed to combine carbon dots with the all-inorganic perovskites Cs 2 ZrCl 6 to form a novel nano/microstructured composite is reported. The abundant functional groups on the surface of the carbon dots can effectively form coordination bonds with the Zr 4+ ions in Cs 2 ZrCl 6 , realizing the effective dispersion of the carbon dots in the matrix. The composite not only introduces a synergistic interaction between carbon dots and Cs 2 ZrCl 6 , but also exhibits novel afterglow emission. This afterglow emission arises from the synergistic immobilization of triple excitons in a 3D spatially confined and rigid environment, thereby suppressing non-radiative excitation processes. Tunable afterglow emission over the entire spectral range is achieved through control of the carbon source reactants, highlighting the outstanding versatility of this composite approach. This composite exhibits dual-mode fluorescence and afterglow emission, holding tremendous potential for applications in information encryption and anti-counterfeiting.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2026
·
IF 3.8
Ling Zhou,Hui Fu,Sheng Cao,Weiyou Yang,Jinju Zheng,Jialong Zhao
Vacancy-ordered double perovskites have emerged as promising candidates for single-component white light-emitting diodes (WLEDs) owing to their intrinsic broadband emission, dopant-induced color tunability, and stable optoelectronic properties. However, their practical application is limited by the difficulty of obtaining high-quality crystals, as the typically rapid and poorly controlled crystallization processes tend to induce lattice disorder and defect formation. In this work, we report a 4-mercaptobenzoic acid (4MBA)-assisted coprecipitation strategy to synthesize high-quality 3%Sb 3+ -doped Cs 2 ZrCl 6 (CZC:3%Sb (4MBA)) microcrystals (MCs). Despite its non-coordinating nature with the crystal surface, 4MBA functions as an effective kinetic regulator that retards crystallization and enhances growth control, thereby suppressing lattice disorder and defect formation to improve crystal quality. As a result, the optimized CZC:3%Sb (4MBA) MCs achieve a photoluminescence quantum yield (PLQY) of 88%, twice that of the unmodified MCs, while concurrently ensuring excellent ambient and thermal stability. Fabricated WLEDs based on CZC:3%Sb (4MBA) MCs exhibit warm white emission with a high color rendering index (CRI) of 94 and maintain stable operation over 14 h. This work presents an effective strategy for regulating crystal growth to enhance the optical performance of lead-free vacancy-ordered double perovskites, paving the way for high-performance, single-component WLEDs.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Lingfeng Li,Muqing Chen,Yayin Liu,Jinhong Chen,Xueyi Chang,Zhiyu Cheng,Lirong Cai,Yongfu Qiu,Yu Wang
Zero-dimensional (0D) lead-free Cs 2 ZrCl 6 nanocrystals (NCs) have gained increasing attention in the photoluminescence (PL) and scintillation fields owing to their remarkable advantages such as low cost, high chemical yield, and environmental friendliness. Nevertheless, the current Cs 2 ZrCl 6 NCs are plagued by low photoluminescence quantum yield (PLQY) and low light yield (LY) due to inherent defects (like chlorine vacancies), which commonly serve as traps and cause non-radiative recombination of excitons. Herein, Cs 2 ZrCl 6 NCs with non-radiative defects eliminated, which have a near-unity (98.6 %) PLQY and an ultra-high LY (79,000 photons MeV −1 ), were prepared via Mn doping. The experimental characterizations, including X-ray photoelectron spectroscopy (XPS), Raman, steady-state and time-resolved photoluminescence spectroscopy, confirmed the elimination of non-radiative chlorine vacancies in Mn-doped Cs 2 ZrCl 6 . Density functional theory calculations disclosed that the existence of chloride vacancies in Cs 2 ZrCl 6 could introduce deep defect levels within the bandgap, resulting in non-radiative recombination. However, Mn doping could eliminate these trap states. Consequently, the fabricated Mn-doped Cs 2 ZrCl 6 scintillator film achieved excellent performance for bendable X-ray detection and imaging, featuring an ultra-low detection limit (35.6 nGy air s −1 ) and an ultra-high spatial resolution (20 lp mm −1 ). The work suggests that doping can provide an alternative solution for developing defect-free perovskites with perfect properties.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Jianzhong Ma,Tongtong Ma,Qianqian Fan,Yiming Shen,Mi Liu,Wenbo Zhang
The development of green chromium-free tanning agents continues to be actively researched as a prominent topic in the leather industry. Zirconium tanning agents have good tanning performance, but their permeability is poor. Halide perovskites, composed of metal ions and organic ligands, are metal-tunable nanomaterials. In order to improve the permeability of zirconium. In this study, Cs 2 ZrCl 6 was synthesized using zirconium ions and combined with Zr(SO 4 ) 2 for collagen modification application. Based on the principle of reversible reactions, the introduction of Zr(SO 4 ) 2 effectively alleviated the rapid hydrolysis of Cs 2 ZrCl 6 , ensuring the preservation of its nanostructure and enabling continuous penetration during the tanning process. The EDS analysis confirmed the uniform distribution of zirconium in leather collagen tanned with Cs 2 ZrCl 6 /Zr(SO 4 ) 2 . Compared with Zr(SO 4 ) 2 tanned leather (73.1 °C), the shrinkage temperatures of Cs 2 ZrCl 6 /Zr(SO 4 ) 2 tanned leather collagen (83.7 °C) is better. Additionally, the BOD 5 /COD cr ratio of the tannery wastewater in this system is 0.65, indicating excellent biodegradability. The development of the Cs 2 ZrCl 6 /Zr(SO 4 ) 2 tanning system provides a new approach for creating chromium-free tanning agents.
研究领域:
材料科学
·
化学工程
·
环境科学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2025
·Vol. 15
·期 33
·26800-26806
·
IF 4.6
Qiaochu Chen,Xuehan Ma,Guifu Dong,Hongbin Yan
All-inorganic lead-free halide perovskites have shown great promise in the field of optoelectronics. However, the room-temperature, low-cost, and large-scale synthesis of such materials remains challenging. Here, we report a rapid mechanochemical synthesis strategy based on ethanol-assisted ball milling to successfully prepare Cs2ZrCl6 double perovskite with Sb3+ doping, which exhibits tricolor luminescence with excitation wavelength-dependent characteristics. The material emits blue (450 nm, [ZrCl6]2− self-trapped exciton emission), warm white (450/610 nm dual peaks), and red (610 nm, Sb3+ 3P1 → 1S0 transition) light under 254, 310, and 365 nm ultraviolet excitation, respectively, with a photoluminescence quantum yield (PLQY) stably exceeding 30%. When the Cs2ZrCl6:Sb3+ samples are fabricated into anti-counterfeiting patterns, they emit blue, warm white, and red light under 254, 310, and 365 nm ultraviolet lamp excitation, respectively, demonstrating excellent application prospects in the field of anti-counterfeiting encryption. This study provides a new idea for the development of efficient and environmentally friendly synthesis of multi-modal anti-counterfeiting materials.
研究领域:
材料科学
·
光电子学
·
无机化学
·
纳米技术
·
防伪技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Anjun Luo,Zhongxi Lin,Houlin Wu,Xingli Zhong,Xieming Xu,Hui Su
Lead-free metal halide scintillators that combine high luminescence efficiency and good processability are highly desirable for X-ray detection and imaging. Here, we establish a room-temperature ultrasonic ligand-assisted strategy for crystal engineering of Cs 2 ZrCl 6 across distinct length scales. Oleic acid (OA) directs the formation of defect-suppressed microcrystals, affording an average photoluminescence quantum yield (PLQY) of 93.14%. Introducing oleylamine (OLA) together with the accompanying changes in the reaction environment yields nanocrystals while preserving an average PLQY of 83.62%. The microcrystals deliver intense radioluminescence, high X-ray sensitivity, and a low dose-rate detection limit of 78.4 nGy s −1 , while the nanocrystals enable flexible PDMS-based scintillation films with a spatial resolution of 4.1 lp mm −1 . This work identifies ligand-assisted size and surface control as an effective route to reconcile scintillation performance with processability in lead-free Cs 2 ZrCl 6 .
✓ 已验证
DOI
高影响因子
Advanced Powder Materials
·
2025
·
IF 24.9
Rujun Yang,Kunjie Song,Yuantian Zheng,Chenhan Zhan,Yajing Wang,Cunjian Lin,Tianliang Zhou,Yixi Zhuang,Rong-Jun Xie
Persistent Luminescence (PersL) materials, which use traps to store energy and emit photons over a long period, have found important applications in the fields of optical information storage, security labeling, and biological imaging. The trap depth is a crucial factor determining the performance of these materials; however, achieving the desired trap depth with high precision remains a great challenge. Here, we provide double perovskite phosphors (Cs 2 SnCl 6 -Cs 2 ZrCl 6 -Cs 2 HfCl 6 series) with highly compatible crystal structures, enabling continuous and precise tuning of trap depth over an ultra-wide range of 0.11 to 1.25 eV. By incorporating W 4+ as the luminescent centers, these phosphors exhibit outstanding near-infrared (NIR) PersL performance at approximately 900 nm and a lasting emission duration exceeding 10 h. The underlying mechanism of PersL is elucidated, and the wide-range tunability of trap depth is attributed to the universal applicability of band-gap engineering in the entire material system. Furthermore, we demonstrate the practical application of these materials by designing a flexible detector plate for X-ray imaging. The detector plate exhibits a storage time of more than 1 week, a detection limit of 0.83 μGy air ·s -1 in the near-infrared region, and real-time and delay-time imaging resolutions of 14.2 lp·mm -1 and 2.5 lp·mm -1 , respectively. These attributes demonstrate strong potential for X-ray luminescence extension imaging.
研究领域:
材料科学
·
光学材料
·
固体物理
·
纳米技术
·
生物医学成像
·
X射线探测
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Run Gan,Yanqing Zu,Tong Zhang,Chengzhang Yang,Chujie Wang,Binglin Zeng,Peitao Liu,Xiaodong Li,Fengbo Han,Yu Qian,Lei Zhao,Ailing Feng,Zhaoxin Wu
The lead-free perovskite Cs 2 ZrCl 6 has recently attracted huge interest in X-ray imaging application. However, it generally exhibits unsatisfactory stability originating from the intrinsically ionic structure and low formation energy, which will hinder the future application. Herein, we design different anchoring groups (amino, sulfhydryl and thiocyanate) mediated nucleation and growth process for synthesis of Cs 2 ZrCl 6 crystals coated by SiO 2 nanospheres, achieving Cs 2 ZrCl 6 @SiO 2 -X (X = NH 2 , SH, SCN) composites, respectively. Among these three samples, Cs 2 ZrCl 6 @SiO 2 -SCN has an impressive photoluminescence quantum yield (PLQY) of 89 %. More importantly, it also manifests outstanding stability toward light illumination, heat and moisture. Such high PLQY and robust stability stem from the isolation effect due to tight anchoring, which separate perovskite crystals from each other and prevent particle aggregation. Finally, a large-area (113 cm 2 ) scintillation screen based on Cs 2 ZrCl 6 @SiO 2 -SCN@poly(dimethylsiloxane) (PDMS) and a commercial thin-film transistor (TFT) panel (16 cm × 13 cm, 125 μm pixel size) were used to fabricate an X-ray imaging detector, which showed a spatial resolution up to 4 lp mm −1 beyond the upper limit of TFT panel and high-quality imaging capability of static objects. It is believed that this scintillator screen has a potential application in next-generation indirect X-ray detection and imaging.
研究领域:
材料科学
·
医学影像学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2026
·
IF 4.6
Lixia Jing,Yanqing Zu,Run Gan,Siqi Li,Binglin Zeng,Mengyu Chen,Peitao Liu,Xiaodong Li,Lei Zhou,Ailing Feng
Vacancy-ordered double perovskites have emerged as promising scintillator materials for X-ray imaging applications. However, they typically necessitate the sophisticated synthetic approaches and exhibit weak emission. Here, an uncomplicated, large-scale, and cost-effective solution synthesis of Te4+-doped Cs2ZrCl6 double perovskite was adopted. Temperature-dependent photoluminescence study on Te4+-doped Cs2ZrCl6 revealed an abnormal negative thermal quenching phenomenon with an increase in temperature. During this process, as the carriers obtain sufficient thermal energy, they can participate in radiative recombination after escaping the trap states, thereby increasing the photoluminescence intensity. Te4+-doped Cs2ZrCl6 microcrystals exhibit highly efficient yellow photoluminescence with a photoluminescence quantum yield of 82% and robust stability, and they are used as scintillators to demonstrate a notable light yield of 24,415 photons MeV–1 and spatial resolution of 8 lp mm–1. It is believed that this scintillator screen shows potential for use in X-ray imaging.
✓ 已验证
DOI
PubMed
高影响因子
Laser & Photonics Reviews
·
2025
·
IF 10
Lianhao Huan,Wei Xie,Dongling Geng,Xinxin Miao,Junru Chen,Xinyun Yang,Peiwen Hou,Haibo Zeng
This work employs an ultrafast microwave-assisted synthesis to achieve efficient and uniform Te 4+ doping in Cs 2 ZrCl 6 within 30 min at 60 °C, addressing key challenges of slow kinetics and inhomogeneous distribution prevalent in conventional methods. Structural and optical analyses confirm that temperature and concentration critically govern dopant incorporation and luminescent properties. Temperature-dependent spectroscopy reveals undoped Cs 2 ZrCl 6 hosts dual self-trapped excitons (Zr-STE1 and Zr-STE2) exhibiting excitation-dependent thermally activated delayed fluorescence (TADF) with a minimal singlet-triplet gap (0.060 eV). Te 4+ doping introduces efficient [TeCl 6 ] 2− emitters and modifies energy transfer pathways. Lifetime analysis demonstrates that host TADF, especially synergistic dual-channel activation under 254 nm excitation, enables highly efficient (>83.1%) resonance energy transfer to [TeCl 6 ] 2− centers. Microwave optimization, achieving homogeneous shallow doping, yields an exceptional photoluminescence quantum yield (PLQY) of 95.43% for Cs 2 ZrCl 6 :Te, significantly outperforming conventional syntheses. The material exhibits outstanding stability under thermal, UV, humidity, cycling, and ambient conditions, with prototype LEDs demonstrating superior reliability. These findings establish a synergistic design strategy combining controlled doping and TADF-mediated energy transfer for high-performance luminescence.
✓ 已验证
产品关联
DOI
高影响因子
Nano Materials Science
·
2026
·
IF 20.5
Zhiyu Pei,Szymon Sobczak,Shuailing Ma,Tian Cui,Laihui Luo,Peng Du
Pt 4+ -doped Cs 2 ZrCl 6 double perovskites were synthesized through a rapid room-temperature synthetic approach. Excited by 365 nm, the obtained compounds exhibit intense red photoluminescence, originating from self-trapped exciton emission. In-situ high-pressure absorption spectroscopy was employed to analyze the pressure-driven evolution of the optical band gap. Moreover, high-pressure X-ray diffraction and Raman spectroscopy experiments indicate a pressure-induced phase transition at around 24 GPa. With compression from 0.27 GPa to 41.56 GPa, the synthesized samples not only exhibit a distinct spectral blue shift but also show enhanced luminescence intensity, leading to the multicolor emission and high-pressure zero-quenching luminescence behavior. Furthermore, the occurrence of the pressure-induced phase transition is visible from the changes in the full width at half maximum (FWHM) of the emission band, which first decreases and then increases with compression, reaching a minimum value at 24.32 GPa. Such strong changes of the emission band centroid and FWHM were employed as the manometric parameters, with maximum absolute sensitivities of 5.35 nm GPa −1 and 2.19 nm GPa −1 , respectively. Additionally, the developed compounds exhibit colorimetric pressure sensing with a maximum relative sensitivity of 2.32% GPa −1 . These findings highlight that the Pt 4+ -doped Cs 2 ZrCl 6 double perovskites hold great potential for multi-parameter, wide-operating range, and high-sensitivity visual pressure sensors.
✓ 已验证
DOI
高影响因子
Advanced Science
·
2026
·Vol. 13
·期 23
·e23940
·
IF 14.1
Zhiyu Pei,Yeshan Wu,Shuailing Ma,Tian Cui,Laihui Luo,Peng Du
Te 4+ -doped Cs 2 ZrCl 6 vacancy-ordered double perovskites with intense self-trapped excitons emissions were prepared via a rapid room-temperature precipitation method. Utilizing low-temperature engineering, tunable luminescence was realized in the synthesized products, resulting in the maximum temperature relative sensitivities of 0.48% and 0.81% K −1 , respectively, when the emission band centroid and lifetime were employed as thermometric parameters. Moreover, in situ high-pressure Raman spectra and X-ray diffraction patterns confirmed the excellent structural stability and reversibility of the studied samples. When the as-prepared compounds experienced the high-pressure conditions, spectral blue-shift and broadened bandwidth were observed, resulting in the tunable luminescence at high-pressure, which endowed their applications in pressure sensing. Furthermore, via utilizing the emission band centroid and full width at half maximum as manometric parameters, the maximum pressure sensitivities of the final products were 6.30 and 1.86 nm GPa −1 , respectively. Additionally, based on the pressure-related color coordinate, the manometric properties of the resultant products were further investigated, yielding a maximum sensitivity of 4.25% GPa −1 . Our findings did not only propose a rapid synthesis route for the Te 4+ -doped Cs 2 ZrCl 6 vacancy-ordered double perovskites but also highlighted that their luminescence properties can be regulated via extreme conditions engineering, showcasing their feasibilities in advanced optical thermometry and manometry.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）