ACS Nano
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2025
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IF 16
Jianqiang Xiao,Kai Yin,Lingxiao Wang,Jiaqing Pei,Xinghao Song,Yin Huang,Jun He,Ji-An Duan
Perovskite quantum dots (QDs) have emerged as revolutionary materials for next-generation display technologies due to their tunable bandgaps, high color purity, and low-cost fabrication. However, challenges persist in outdoor display applications, including poor stability, inadequate weatherability designs, and multicolor integration difficulties. This study proposes a bioinspired “atomic–nano–micro” fabrication strategy based on femtosecond laser direct writing (FsLDW). By synergizing transient laser thermodynamic modulation with surface micro/nanostructural engineering, dual-functional architectures are simultaneously constructed on a polyvinylidene fluoride (PVDF) substrate. The upper layer utilizes laser ablation to generate hierarchical micro/nano structures, forming a lotus-leaf-inspired superhydrophobic surface (contact angle >161°, sliding angle <3°) that provides self-cleaning capability and water-erosion resistance. The lower layer leverages the low thermal conductivity of PVDF to regulate the localized thermal environment, driving directional crystallization of CsPbX3 (X = Cl/Br/I) QDs with in situ halogen composition control, thereby achieving single-step FsLDW-patterned full-spectrum emission (475–690 nm) and high-resolution patterning (∼20 μm). The resulting films retain over 90% of their initial luminescence intensity after simulated outdoor environmental testing and demonstrate exceptional rain-driven self-cleaning properties, effectively resisting pollutant coverage. This strategy offers an innovative solution for developing perovskite-based luminescent devices that integrate high stability, flexibility, full-color display, and weather resistance.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xiaoman Zhang,Xueliang Zhang,Yehua Zheng,Cancan Li,Xiaodong Zhang,Lefu Mei,Luoxin Wang,Hua Wang,Xiangming Li,Kun Nie
Lead-free halide double perovskites have garnered extensive research attention due to their outstanding environmental protection performance, structural tunability, and excellent photoelectric properties. However, stable multimode luminescent perovskite materials and more extensive application research remain urgent problems to be solved. In this study, holmium-based lead-free double perovskite with good resistance to thermal quenching was successfully synthesized. The up-conversion luminescence (UCL) of perovskite can be regulated by doping Yb 3+ . Moreover, the emission wavelength can be effectively regulated by adjusting the doping concentration of Yb 3+ and the power of the excited laser. In addition, the aramid staple fiber (ACFs) and polyphenylene sulfide (PPS) composite fiber paper, after being modified with lead-free perovskite, exhibits luminescent properties under ultraviolet (UV) light and near-infrared (NIR) light. The modified luminescent fibers maintain their original flexibility and have good luminescent stability. After being stored in industrial acidic gases for 48 h, the luminescent fibers still maintained good luminescence performance, and no obvious luminescence quenching was observed. Surprisingly, the modified composite fibers also have good piezoelectric properties. The piezoelectric properties of perovskite piezoelectric fibers have been significantly improved through the doping of Yb 3+ . Its maximum output voltage is 17 V, and the response time is 9 ms. Perovskite-type piezoelectric fiber devices exhibit good output stability in humid environments. Multimode emission lead-free perovskite and its functional textiles will have strong competitiveness in the fields of flexible wearable fabrics and intelligent sensing and reality.
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Laser & Photonics Reviews
·
2025
·
IF 10
Pei Jiang,Yi Zhang,Songchao Bai,Pengchao Shen,Meng Zhou,Baohong Tian,Gang Yang,Mengmeng Dai,Yongsheng Zhu
Lead-free halide double perovskites (DPs) have attracted growing attention owing to their eco-friendly composition and remarkable optoelectronic performance. However, it remains a challenge to develop DPs that simultaneously achieve high photoluminescence quantum yield (PLQY), excellent stability, and multifunctional applications. Herein, rare-earth-based DPs Cs 2 NaHoCl 6 single crystals are successfully synthesized, which achieve the optimized red and near-infrared (NIR) emissions of Ho 3+ through doping Ce 3+ ions. Benefiting from strong absorption of Ce 3+ and efficient energy transfer to Ho 3+ under 340 nm excitation, the PLQY remarkably increases from 3.67% to 92.56%, which are confirmed by experimental analyses and density functional theory calculations. Meanwhile, taking advantage of abnormal anti-thermal quenching luminescence of Ho 3+ and highly efficient thermal response capability of Stark levels of 5 F 5 within the temperature range of 80–500 K, the prepared DPs provide a distinctive platform for luminescence thermometer with a superior relative sensitivity value of 5.19% K −1 at 80 K and red-NIR light-emitting diode. These results not only establish Ce 3+ as a generalizable strategy for optimizing luminescence in rare-earth-based DPs, but also open new avenues for their multiple potential applications in solid-state lighting, temperature sensing, night vision imaging as well as plant growth illuminating.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2026
·
IF 2.4
Ziyu Zhuang,Manman Zhang,Dandan Gao,Wolfgang Voigt,Dongdong Li,Haitao Feng
Previously, the formation of a stable adduct 2H3BO3·3CsCl (BC) was observed in CsCl(aq) but not in RbCl(aq). The phase equilibria of the H3BO3 + RbCl + CsCl + H2O system were studied to assess the potential for selective separation of Cs from Rb. Solubility isotherms were determined experimentally. Appropriate liquid composition ranges were preselected using modeling with ISLEC’s equilibrium software. Schreinemakers’ wet solid method, XRD, Raman and IR spectra, Roozeboom’s plots, and SEM-EDS were applied to identify the four phase regions H3BO3, 2H3BO3·3(Cs,Rb)Cl (Bss), (Rb,Cs)Cl, and (Cs,Rb)Cl. Notably, in the presence of RbCl, the BC phase incorporates Rb+, forming a substitutional solid solution, Bss, which inhibits selective separation of CsCl. Roozeboom’s plot analysis revealed that RbCl exhibits higher solubility in the Bss phase compared to the (Cs,Rb)Cl solid solution. The separation factor βCs/Rb between the solid Bss phase and the corresponding solution was 2.0, significantly lower than that of (Cs,Rb)Cl (βCs/Rb = 9.5) in the ternary system without H3BO3. This indicates a stronger coordination between CsCl and H3BO3 relative to that of RbCl in the ternary system without H3BO3. The above understanding provides new strategies designing novel B–OH compounds to enhance Cs/Rb separation efficiency in aqueous systems.
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ACS Catalysis
·
2026
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IF 13.1
Wendong Wang,Xingwen Cha,Longmei Shang,Kang Sun,Fangsong Guo,Jianchun Jiang,Guowu Zhan
This work demonstrates a strategic shift from dynamic electrolyte modulation to static, intrinsic promotion of the CO2 reduction reaction by stably integrating alkali metal cations as a solid-state component within a heterogeneous catalyst. To address the persistent challenge of alkali metal ion leaching due to high aqueous solubility, we immobilize K+ cations into a carbon nitride framework (Ni@K–C3N4) hosting atomically dispersed Ni–N3 sites via an ionothermal strategy. Structural confinement through coordination with nitrogen sites in the C3N4 matrix effectively suppresses K+ leaching, enabling sustained electronic regulation of the Ni centers. Combined experimental and theoretical analyses reveal that K+ incorporation attenuates d-π conjugation, promotes electron localization around Ni sites, and stabilizes low-valent Niδ+ species. This electronic reconfiguration enhances CO2 adsorption and activation while suppressing competitive hydrogen evolution reaction. The optimized Ni@K–C3N4 catalyst achieves a CO Faradaic efficiency of 95% at −0.74 V vs RHE, a current density of ∼20 mA·cm–2, and stable operation over 50 h. Notably, it maintains >80% CO selectivity under a diluted CO2 atmosphere (40%), highlighting its practicality for real low-concentration streams. This work establishes a polymer-functionalization strategy for precise electronic tuning of single-atom catalysis, advancing the design of efficient CO2 utilization systems.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
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IF 9.6
Xiangyan Yun,Zexiang Liu,Baoxia Liu,Renping Cao,Jingheng Nie
The broadband emission and long lifetimes of self-trapped excitons (STEs) have garnered significant interest. However, in highly symmetric all-inorganic halides, STEs behavior has traditionally been explained exclusively through Jahn–Teller distortions. Herein, we report an anomalous dual-STEs emission in Sb 3+ -doped Cs 2 CdCl 4 with a layered Ruddlesden–Popper phase. At room temperature, Cs 2 CdCl 4 :Sb 3+ exhibits a single green emission band centered at 514 nm, while an additional red-shifted emission band at 586 nm emerges at low temperatures (80–220 K). Integrated analysis combining temperature-dependent spectroscopy, time-resolved dynamics, and density functional theory (DFT) calculations reveals that the 514 nm band arises from Jahn–Teller distortion within the [SbCl 6 ] 3− octahedra, while the 586 nm band is stabilized by strong dipole–dipole coupling between the STEs dipole moment and localized polar environments created during solution synthesis. This work provides direct experimental and theoretical evidence that local polarity perturbations can regulate STEs emission even in highly symmetric all-inorganic halides. Furthermore, the Cs 2 CdCl 4 :Sb 3+ powders and their Cs 2 CdCl 4 :Sb 3+ @PDMS films exhibit excellent stability and device applicability, demonstrating promising potential for solid-state lighting and flexible optoelectronic applications.
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Nanomaterials
·
2026
·Vol. 16
·期 7
·400
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IF 4.8
Yu Xiao,Xiaobo Hu,Ziqian Jiang,Chuanli Wu,Xiuxun Han
Halide double perovskites with near-infrared (NIR) emission are promising for optoelectronic applications. NIR-II (1000–1700 nm) emission, in particular, is attractive due to its strong tissue penetration, high spatial resolution, and low biological light damage risk. However, materials capable of NIR-II emission often require additional sensitizers and suffer from issues such as narrow emission bandwidth and low photoluminescence efficiency. In this work, we report a Re 4+ doping strategy using Cs 2 WCl 6 , a vacancy–ordered double perovskite, to achieve efficient NIR-II emission. Spectroscopic and dynamic measurements reveal energy transfer between the Cs 2 WCl 6 matrix and the Re 4+ centers, resulting in efficient broadband NIR-II emission centered at 1345 nm (FWHM ≈ 87 nm), along with broad excitation ranging from 250 to 850 nm. The optimal NIR-II emission occurs at 1345 nm with a photoluminescence quantum yield (PLQY) of 29.83% when the Re 4+ doping concentration is 1%. This work demonstrates an efficient, sensitizer-free method for achieving broadband NIR-II emission and provides a new material strategy for high–performance double perovskites NIR light sources.
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ACS Applied Materials & Interfaces
·
2026
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IF 7.8
Chen Chang,Shixu Tao,Chang Xu,Yu Zhang,Wenxin Jiang,Yongge Cao,Chaoyang Ma
Colloidal CsPbX3 (X = Cl, Br, I) quantum dots (PQDs) typically suffer from severe degradation under heat, moisture, and UV/blue light irradiation, primarily due to the dynamic detachment and mismatch of surface ligands. Recently, ligand-free template-assisted strategies have emerged as an effective approach to address these challenges by regulating PQD growth through spatial confinement within nanoporous matrices. However, most reported systems are restricted to powder or thin-film forms and lack a robust, transparent, and device-compatible macroscopic architecture. In this work, we for the first time report a ligand-free in situ confined growth strategy for PQDs within a transparent nanoporous poly(methylsilsesquioxane) (PMSQ) xerogel monolith. The nanopores of the hydrophobic PMSQ template provide effective spatial confinement for the PQDs, which suppresses aggregation of PQDs and reduces nonradiative trap states, thereby enabling a high photoluminescence quantum yield exceeding 92% and excellent thermal stability, moisture stability, and photostability. Furthermore, the strategy is extended to synthesize CsPbX3 (X = Cl, Br, I) QDs@PXMs with tunable emission across the visible spectral range from 417.6 to 674.2 nm. A white light-emitting diode fabricated using CsPbBr3 QDs@PXMs and commercial K2SiF6: Mn4+ phosphors achieves a luminous efficiency of 110 lm W–1 and a wide color gamut reaching 133% of the NTSC 1931 standard. These findings demonstrate that CsPbX3 QDs@PXMs constitute robust and high-performance PQD-based composite materials suitable for high-quality lighting and wide-color-gamut display applications.
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ACS Applied Materials & Interfaces
·
2026
·
IF 8.2
Tao Song,Taiyu Li,Yaping Zhang,Xiaoting Zhang,Rongmin Wang,Qiang Wang,Pengfei Song
Elucidating the structural phase transitions and luminescence mechanisms of metal halides is a challenging, yet critical endeavor. Their full potential is in developing materials with tailorable optoelectronic properties and multifunctional applications. In this study, we synthesized two distinct lead-free double perovskites Cs2NaInCl6 and Cs3.4Na0.6InCl7 using identical reactants under different synthesis conditions. We found that the phase transition between these two perovskites can be precisely controlled by adjusting the N, N-Dimethylformamide (DMF) concentration in the solvent. The optical properties and emission mechanisms of these materials were systematically elucidated through a combination of experimental analysis and density functional theory (DFT) calculations. The Sb3+-doped perovskites exhibit remarkable photoluminescence quantum yield (PLQY), with the yellow green-emitting Cs3.4Na0.6InCl7 reaching 90.1% and the blue-emitting Cs2NaInCl6 achieving an impressive 90.3%. By introducing more water solvents, we successfully synthesized orange-emitting crystal Cs2InCl5·H2O:Sb3+. Finally, we fabricated white-light-emitting diodes (WLEDs) by integrating the synthesized blue-, yellow-green-, and orange-emitting crystals with a UV chip. The resulting device demonstrated excellent white light performance, exhibiting a high color rendering index (Ra) of 92.2, a correlated color temperature (CCT) of 5119 K, and CIE coordinates of (0.34, 0.38). This work provides new insights into the luminescence mechanisms of halide perovskites and demonstrates that crystal structure engineering is a feasible and promising approach for tuning their optical properties.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Weijie Ren,Guojin Yu,Kaiyi Pan,Wenhao Yang,Qixia Zhang,Yuanhang Zhou,Yueqiang Zhao,Ye Xiong
Dual-network (DN) design is an effective means of constructing radionuclide-capturing aerogels with both high adsorption capacity and excellent stability. However, the fundamental role of DN structures in regulating the dispersion of encapsulated nanoparticles and the interfacial microenvironment remains unverified. Here, the synergistic immobilization and enhanced adsorption mechanism of CuFe-Prussian blue nanoparticles (CuFe-PB NPs) by a cellulose nanofiber/polyacrylamide dual network (CNF/PAM DN) were explored through experiments and simulations. The results show that PAM tightly encapsulates the PB/CNF composite via hydrogen bonding and physical entanglement, achieving a synergistic enhancement of the material's mechanical strength and structural stability. The resulting CNF/PAM DN - engineered PB aerogel (PB/CNF DN-A) retains 90% shape recovery after 100 compression cycles. Furthermore, molecular dynamics simulations elucidate that the DN structure provides ordered ion-transport channels and electrostatic synergy. Its unique “ion pre-enrichment” and “dehydration-assisted” effects effectively lower the energy barrier for Cs + removal within the hydration layer, enhancing the adsorption kinetics of Cs + . The optimized PB/CNF DN-A significantly reduced CuFe-PB NPs leakage and achieved a Cs + adsorption capacity of up to 403.9 mg/g within 50 min. In summary, this work deepens the understanding of interface-mediated interactions in multifunctional aerogels and provides a scalable platform for high-performance environmental remediation materials.
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CERAMICS INTERNATIONAL
·
2026
·
IF 6
Shala Bi,Houjin Hu,Boya Li,Yi Liu,Yongmei Gao,Zhaoyang Chen,Aimin Chang,Peiqing Cai
Lead-free halide double perovskite up-conversion (UC) materials have attracted significant attention due to their unique photoelectric properties and eco-friendly features in the field of optoelectronics and energy research. However, their multimodal excitation mechanisms remain unclear, and research on these materials is still in early development. In this work, Er 3+ , Yb 3+ , Tb 3+ tri-doped lead-free halide double perovskite Cs 2 NaScCl 6 microcrystal (MCs) were synthesized via hydrothermal method. The crystal structure, morphology, and luminescent properties were investigated by X-ray diffraction, scanning electron microscopy, and photoluminescence spectroscopy. The optical characterization reveals that Er 3+ /Yb 3+ /Tb 3+ co-doped Cs 2 NaScCl 6 MCs exhibit green luminescence by dual-mode excitation. When excited by 280 nm ultraviolet (UV) light, the 5 D 4 → 7 F 5 transition of Tb 3+ dominates the characteristic down-conversion (DC) emission at 546 nm. Under the 980 nm near-infrared (NIR) excitation, the MCs emit intense up-conversion (UC) emission of Er 3+ at 550 nm, generated by the 2 H 11/2 → 4 I 15/2 and 4 S 3/2 → 4 F 9/2 transition. By employing the luminescence intensity ratio between two thermally coupled energy levels of Er 3+ ( 2 H 11/2 and 4 S 3/2 ), a maximum relative sensitivity of 1.201% K −1 was achieved at 303 K. Furthermore, utilizing the green luminescence characteristics under 280 nm/980 nm dual-mode excitation, a digital encoding programming was developed to successfully demonstrate multilevel information encryption/decryption. All results indicate the Cs 2 NaScCl 6 : Er 3+ , Yb 3+ , Tb 3+ MCs have potential in various areas such as optical temperature sensing and anti-counterfeiting applications.
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Advanced Optical Materials
·
2022
·Vol. 11
·期 3
·2202059
·
IF 10.05
Zhicheng Wang,Jiale Guo,Qi-Sheng Lin,Guanghui Rao,Jingtai Zhao,Chengzhang Yang,Weixiang He,Chujie Wang,Zhijun Zhang
Copper-based metal halide scintillators have received increasing attention due to their high light yield and nontoxicity. However, the synthetic methods are still not feasible for actual commercialization for the difficulty in scaling up and the absence of green chemical footprint. Herein, we report a new, simple, aqueous synthetic method for the mass production of highly purified and crystallized Cs 3 Cu 2 Cl 5 powder by a room-temperature reaction between a saturated aqueous solution of CsCl and a saturated hydrochloric acid solution of CuCl. The product exhibits a photoluminence peak centering at 527 nm (FWHM = 106.7 nm) and a quantum yield (PLQY) of 97%. A prototype X-ray imaging detector is fabricated by coupling a large area scintillation screen prepared by blade coating of Cs 3 Cu 2 Cl 5 powder and a commercial thin-film transistor (TFT) panel (16 cm × 13 cm, 125 µm pixel size) with readout circuit. The device exhibits a high spatial resolution of 4 lp mm −1 , exceeding the theoretical limit of the TFT panel, and an excellent dynamic imaging ability. In short, this work demonstrates an efficient novel synthetic method of Cs 3 Cu 2 Cl 5 and its application as X-ray imaging device, providing an applicable solution for its future commercialization.
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