ADVANCED FUNCTIONAL MATERIALS
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2026
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IF 19.9
Jinlong Xie,Wenke Xie,Xiao Sun,Yuheng Jiang,Yaokai Niu,Zihao Chen,Sitong Li,Tianpeng Ding,Qiye Wen
Developing transparent terahertz (THz) absorbers that simultaneously achieve strong electromagnetic attenuation and high optical transmittance remains challenging. Despite the pronounced THz dielectric responses in aqueous ionic systems, the structural origins of energy dissipation and their quantitative link to ion-water interactions remain insufficiently resolved. This study systematically quantifies ion-water interaction strength in various ionic solutions and correlates it with water-state distribution and THz dielectric dissipation. Our findings indicate that weaker ion-water interactions are associated with enhanced conductive and dissipation pathways. Guided by this correlation, we designed a polydimethylsiloxane (PDMS)-encapsulated CsCl hydrogel with a thickness of only 0.14 mm, which achieves an average reflection loss of 52.24 dB and an effective absorption bandwidth (EAB) covering 0.3–1.2 THz, while maintaining over 90% optical transmittance and high mechanical deformability. This work provides a structure-informed strategy for the rational design of transparent THz absorbing materials.
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Journal of Energy Chemistry
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2026
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IF 15.6
Zhiqiang Liu,Henghui Jin,Yongping Du,Weicheng Zhan,Leiming Lang,Guangxiang Liu,Jiangtao Yuan,Pan Feng,Li Tao,Jian Zhang,Guoqiang Luo,Changlin Dong,Jiajun Gu,Wenshu Chen
Restacked two-dimensional (2D) material thin films offer a promising approach for achieving high volumetric energy density supercapacitors, but their ultimate rate performance is constrained by electrolyte ion transport properties. This work systematically investigates the electrochemical behaviors and underlying mechanisms of restacked 1T−MoS 2 films in various aqueous electrolytes. In 1 M CsCl electrolyte, an 8.5-μm-thick 1T−MoS 2 film electrode exhibits ultrafast ion storage kinetics with a b -value of 0.94 and a remarkable volumetric capacitance ( C v ) of 221 F cm −3 at 1,000 mV s −1 , significantly outperforming other ionic systems. The electrode also demonstrates excellent cycling stability with 87% capacitance retention after 10,000 cycles at 10 A g −1 . Compared to reported advanced graphene, MXene, and oxide-based electrodes, the 1T−MoS 2 film electrodes in 1 M CsCl show an integrated advantage of ultrathin characteristic and ultrahigh C v under considerable high scan rates of 500 to 1,000 mV s −1 . Theoretical calculations reveal that Cs + possesses the lowest diffusion barrier between 1T−MoS 2 interlayers, where its weak solvation effect facilitates rapid ion storage kinetics. This work not only elucidates the ultrafast transport mechanism of Cs + within confined 2D spaces, but also provides insights into developing next-generation ultrafast energy storage devices with high volumetric energy densities through optimized electrolyte–electrode synergy. The electrochemical ion storage behaviors and underlying mechanisms of restacked 1T−MoS 2 film electrodes in various aqueous electrolytes were systematically investigated. The electrodes exhibit ultrafast charge storage kinetics in 1 M CsCl, demonstrating the combined advantages of ultrathin feature and ultrahigh volumetric capacitance at scan rates as high as 1000 mV s −1 , significantly outperforming state-of-the-art reported electrode materials. Download: Download high-res image (188KB) Download: Download full-size image
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Advanced Optical Materials
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2026
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IF 7.2
Min Zhang,Jianming An,Yue Li,Edwin Yue Bun Pun,Hai Lin
Novel Eu 3+ -doped Cs 2 KInCl 6 double perovskite exhibits ultrabroadband emission, enabling efficient multicolor luminescence covering the entire visible spectrum with a single luminescent center. This behavior originates from the intrinsically low phonon energy of the host, which effectively suppresses multi-phonon relaxation (MPR) and consequently reshapes the radiative pathways of Eu 3+ . As a result, its stepwise population accumulation occurs along the excited-state energy ladder, promoting multiple radiative transitions. Based on this kinetic behavior, the rare coexistence of blue ( 5 D 3 → 7 F 4 ), green ( 5 D 2 → 7 F 3 ), yellow ( 5 D 1 → 7 F 2 ), and red ( 5 D 0 → 7 F 2 ) emissions are achieved with large emission cross-sections of 2.00 × 10 −22 , 4.75 × 10 −22 , 5.48 × 10 −22 , and 8.18 × 10 −22 cm 2 , respectively. These emissions are further validated by high fluorescence branching ratios exceeding 40%, confirming the efficiency of the corresponding radiative channels and their collective contribution to multipeak full-spectrum emission. In addition, the phosphors demonstrate pronounced thermal responsiveness in the temperature range of 303 – 433 K, together with dynamically tunable emission, supporting their applications in high-sensitivity optical thermometry, dynamic anti-counterfeiting, and high-quality lighting. Overall, this work suggests that ultralow-phonon-energy perovskite provides an effective platform for achieving multiple excited-state radiative transitions, thus offering a research foundation for developing functional optical materials and next-generation photonic devices.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Yanrong Zhu,Hanlin Hu,Haizhe Zhong,Yumeng Shi
Conventional white light-emitting diodes often suffer from low color rendering index and high correlated color temperature due to the lack of red emission. Here, we report novel rare-earth-free Cs 2 CdCl 4 : Sb 3+ , Mn 2+ phosphors synthesized via a cost-effective co-precipitation route. The dual-emission behavior arises from Sb 3+ -related self-trapped excitons (green) and the characteristic 4 T 1 (G)→ 6 A 1 (S) transition of Mn 2+ (orange). Spectroscopic and time-resolved studies reveal an efficient Sb 3+ →Mn 2+ energy transfer process, governed by a dipole-quadrupole interaction. By adjusting Mn 2+ concentration, tunable emission spanning green to orange is achieved, enabling single-component white light generation. In addition, the strong concentration and excitation-dependent emission characteristics suggest potential applications in areas such as multidimensional information encryption and optical anti-counterfeiting. This work provides a low-cost, rare-earth-free strategy for designing multifunctional phosphors for high-quality lighting and security technologies.
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Laser & Photonics Reviews
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2026
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IF 9.7
Yuxin Han,Guofeng Liu,Wei Gao,Rui Wang,Haonan Xie,Meng Tian,Lijun Ma,Zhen Li,Chonghui Li,Xiaohui Lin,Chao Lv,Jianlei Yang,Zuoling Fu,Shicai Xu,Chao Zhang
Upconversion luminescence (UCL) materials exhibit significant potential for applications in biological imaging, solar cells, and optical security. However, their efficiency is constrained by the low absorption cross-sections and nonradiative energy losses intrinsic to rare earth ions. In this study, remarkable UCL enhancement was achieved for Cs 2 NaYCl 6 : Yb 3+ /Tm 3+ core–shell nanoparticles (csUCNPs) via surface passivation and the local surface plasmon resonance (LSPR) effect. At a high Tm 3+ doping concentration (10%), the system exhibits the highest fluorescence intensity, surpassing the low-doping limits reported in conventional systems with larger lattice parameters. This marks the first report of intense fluorescence induced by high-concentration Tm 3+ doping in this system. Surface defects and non-radiative transitions were further suppressed via a dual strategy of double perovskite coating and SiO 2 encapsulation, simultaneously enhancing both material stability and luminescence efficiency. Furthermore, the LSPR effect of Cs x WO 3 significantly enhanced the UCL efficiency of csUCNPs, with luminescence intensity amplified by approximately twofold through the synergistic interplay of localized electromagnetic field enhancement and energy transfer, providing experimental and theoretical insights into the role of semiconductor LSPR effects in rare earth luminescence. This work demonstrates further promising potential in multicolor anti-counterfeiting applications for advanced encryption technologies and cell imaging for biological detection.
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ADVANCED MATERIALS
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2026
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IF 29.1
Xiachu Xiao,Yutao Yang,Jianru Wang,Yuxiang Xin,Yujie Jiang,Xingyou Wu,Kun Zhang,Hengyang Xiang,Haibo Zeng,Jiang Tang,Zhuolei Zhang
High-brightness photonic platforms driven at high currents self-heat beyond 400 K; under such conditions, colloidal emitters (II–VI, III–V, I–III–VI 2 , group-IV semiconductors, and both leaded and lead-free halide perovskite nanocrystals) typically lose efficiency and drift in color. Extrinsic passivation offers limited thermal gains with trade-offs such as organic-matrix degradation or oxide-shell phonon bottlenecks. Here we establish a lattice-encoded chemical strategy that imparts intrinsic thermal resilience to colloidal nanocrystals via defect–phonon–exciton coupling in a zero-dimensional Sb 3+ -doped Cs 3 LnCl 6 lattice. A controlled-ramp synthesis co-modulates site occupancy and defect chemistry, creating rigid, low-phonon [BX 6 ] 3− octahedra that localize lattice expansion and suppress multiphonon relaxation. Ångström-scale engineered deep traps (∼0.6–1.2 eV) recycle thermally activated carriers, enabling trap-compensated anti-thermal quenching and stabilizing emission through Ln 3+ 4f cascade coupling. Tunable from deep violet to ultra-narrow green and yellow, these nanocrystals show enhanced photoluminescence at elevated temperatures (Cs 3 LnCl 6 :Sb 3+ reaches 160% intensity at ∼410 K while retaining >93% photoluminescence quantum yield). High-power devices retain >90% luminous flux after 50 h at 1.4 A (junction temperature ∼410 K) with <1% chromaticity shift. This work turns thermal robustness from extrinsic protection into intrinsic bonding, providing a molecular design framework for high-flux photonics.
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Advanced Optical Materials
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2026
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IF 7.2
Yujia Peng,Zhimin Yu,Liang Zhao,Yuhang Zhang,Hai Lin
The demand for advanced luminescent perovskites with tunable emission and excellent thermal stability is rapidly growing in secure optical encryption and high-precision temperature sensing. Herein, we develop a multifunctional Cs 2 NaLuCl 6 : Sb 3+ /Ho 3+ /Yb 3+ (CNLC: Sb-Ho-Yb) perovskite that achieves coordinated control of color modulation and thermal robustness. By enabling efficient Sb 3+ →Ho 3+ energy transfer in downshifting (DS) and simultaneously suppressing Ho 3+ nonradiative losses in upconversion (UC), the Sb 3+ -doped strategy significantly enhances both Ho 3+ DS and Ho 3+ -Yb 3+ UC emissions, serving as a foundation for color-coded encryption. The CNLC: Sb-Ho-Yb system further enables dual-mode thermometry by exploiting the contrasting thermal behaviors of its UC (enhanced) and DS (quenched) emissions, allowing for temperature sensing tailored to the specific thermal responses of the respective luminescence mode through two independent fluorescence intensity ratio (FIR) methodologies. Specifically, excitation-wavelength-controlled color switching enables high-security and multi-dimensional optical encryption with strong anti-interference capability, while the high luminescence sensitivity and reversible thermal response ensure high-precision temperature sensing with excellent signal fidelity. Overall, this work establishes a new design paradigm that bridges thermal stability and tunable luminescence in perovskite systems, paving the way toward next-generation intelligent optical encryption and reliable thermal sensing technologies.
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Advanced Optical Materials
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2026
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IF 7.2
Bing-Jun Zhu,Jiacheng Liu,Yang (Michael) Yang,En Ma,Jia-Jun Yan,Heng-Yun Ye,Le-Ping Miao
With the continuous improvement of the efficiency of photodetectors in the near-infrared (NIR) region in recent years, NIR scintillator materials have attracted more and more attention from researchers. Current scintillator materials either emit in the visible region or have low light yield in the NIR region. Herein, we describe efficient NIR scintillation by doping Yb 3+ in lead-free halide double perovskites (DP) Cs 2 NaYCl 6 . Its light yield reaches 93295 photons·MeV −1 , and the detection limit is as low as 4.2 µGy air ·s −1 upon radiation with 20 keV X-ray. Moreover, it exhibits great irradiation hardness, maintaining 96% of its initial scintillation intensity after exposure to an X-ray dose of 6.66 Gy air . A flexible scintillator film Cs 2 NaYCl 6 : Yb 3+ @PDMS with an area of 100 cm 2 is prepared by combining the material with PDMS as a carrier and successfully applied to X-ray imaging. The spatial resolution of the scintillation screen is determined to be 10 lp·mm −1 using line-pair phantoms and modulation transfer function (MTF). This finding reveals that lead-free halide perovskites are attractive functional materials suitable for matrices of NIR scintillation materials.
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ACS Nano
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2026
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IF 16
Shuhan Zhang,Shuo Wang,Qilin Wei,Xin Li,Dan Huang,Feng Liu,Wengang Bi,Zhaolai Chen,William W. Yu,Jiang Tang,Liang Wang
Quantum-cutting CsPbCl3:Yb perovskites represent a compelling class of emitters for high-performance near-infrared (NIR, >950 nm) light-emitting diodes (LEDs). The intrinsic anisotropy in dielectric response, surface termination chemistry, and strain fields across different crystallographic facets significantly influences perovskite optoelectronic performance. However, precise control over facet-selective growth in CsPbCl3:Yb thin films remains challenging due to pronounced disparities in surface and formation energies. Here, we introduce a thermal evaporation strategy to achieve controlled crystallographic orientation of CsPbCl3:Yb films for enhanced NIR emission. By modulating thermodynamic and kinetic processes, we enable selective growth of (100)- and (110)-oriented films. Comparative analysis reveals that (110)-oriented films provides a more favorable dielectric environment, resulting in stronger exciton binding and enhanced energy transfer to Yb3+ ions. Leveraging this facet-guided design, our optimized device delivers an external quantum efficiency (EQE) of 7.05% and a radiance of 639 mW/sr/m2 for vacuum-processed NIR (>950 nm) LEDs.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2026
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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
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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
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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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