MICROCHEMICAL JOURNAL
·
2026
·
IF 5.1
Penghao Zhu,Guang Zheng,Kaili Gao,Duoxia Xu,Xiaohua Nie,Yuanchao Lu,Guijie Hao,Xianghe Meng
Size and shape critically influence the optical properties of CsPbBr 3 NCs, but lack sufficient research in sensing. Herein, particle sizes and shapes of CsPbBr 3 NCs were precisely adjusted by room-temperature synthesis method, and sensing performances to peroxide value (PV) of edible oils were investigated. The results found that the particle sizes (4.3 ± 0.2, 6.3 ± 0.2, 8.8 ± 0.3, and 12.9 ± 0.6 nm) of high-crystallized cubic CsPbBr 3 NCs were precisely obtained, and the fluorescence (from 491 to 516 nm) and absorption (from 470 to 526 nm) peak wavelengths redshifted as the particle size increased from 4.3 nm to 12.9 nm. Among four particle sizes, CsPbBr 3 NCs (8.8 nm) demonstrated the optimal sensing performance (wavelength-shifted colorimetric method R 2 = 0.99) for PV detection, achieving a linear response range of 0.02–0.36 g/100 g with LOD of 0.0022 g/100 g and LOQ of 0.0073 g/100 g. Considering the interference from trace moisture in edible oil, a moisture-compensated intensity-quenched colorimetric method was proposed to improve the practical accuracy, with the practical recovery rates from 95%–245% to 90%–119%. Therefore, the proposed methods had good sensitivity, accuracy and practicability, and enlightened the effective technologies for the quality detection of edible oil.
✓ 已验证
产品关联
DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2026
·
IF 4.6
Feng Tong,Yi Zhu,Xiuquan Gu,Zheng Chen
Perovskite nanocrystals (PNCs) are promising luminescent materials for display applications owing to their exceptional optoelectronic characteristics. Nevertheless, their practical deployment is hindered by intrinsic high defect densities, which lead to insufficient photoluminescence quantum yields (PLQYs) and accelerated material degradation. In this study, a one-pot strategy was proposed by using nitrogen-doped graphene quantum dots (NGQDs) as surface ligands. Coupled with a polymethyl methacrylate (PMMA) coating, the NGQDs facilitate the formation of a robust composite architecture. Under optimized NGQD incorporation, the fabricated CsPbBr 3 /NGQDs/PMMA composite films display an ultra-narrow green emission peaked at 522 nm, with a full width at half maximum (FWHM) as narrow as 16 nm. More importantly, the composite exhibits significantly enhanced stability, maintaining 70% of its initial PL intensity after 7 days of water immersion or 1 h of thermal treatment at 100 °C. Such improvements are ascribed to effective defect passivation by the NGQDs and the beneficial role of their nitrogen-rich sites in promoting perovskite crystallization. As a demonstration of their potential, white light-emitting diodes (WLEDs) based on the composite realize a wide color gamut, covering 131% of the NTSC standard and 98% of the Rec. 2020 standard. This work thus proposes a novel one-pot in situ passivation approach, providing an effective route to concurrently address the efficiency and stability issues of PNCs.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2026
·
IF 5.1
Fazl Ullah,Muhammad Sohail,Nimra Razzaq,Intikhab Alam,Taha Sheheryar,Zia Ullah,Muhammad Sohail,Qiuyun Ouyang
The nonlinear optical (NLO) properties of lead-free halide perovskites are of significant interest for photonic applications, yet strategies for compositional engineering remain limited. In this work, SbBr3-doped Cs3BiBr6 nanocrystals (Cs3BiBr6/SbBr3) were prepared using a hot-injection synthesis method and subsequently embedded in poly(methyl methacrylate) (PMMA) to fabricate organic glass (OGs). X-ray diffraction (XRD) and transmission electron microscopy (TEM) analyses confirmed that the materials exhibited high phase purity along with a uniformly dispersed nanoscale structure. Z-scan measurements using a 532 nm nanosecond laser demonstrated that Cs3BiBr6/PMMA matrix displayed a NLO response, shifting from saturable absorption (SA) to reverse saturable absorption (RSA). Whereas Cs3BiBr6/SbBr3/PMMA showed dominant RSA with enhanced optical limiting (OL) performance. The effective nonlinear absorption coefficient (β) decreased from 2.10×10-8 to 1.35×10-8 mW-1 with increasing excitation energy, highlighting the role of Sb incorporation in strengthening RSA. First-principles calculations revealed stable integration of Sb into the perovskite lattice, narrowing the bandgap and introducing Sb states near the Fermi level, thereby enhancing light–matter interactions. These results demonstrate that Sb-doped Cs3BiBr6 is a promising lead-free perovskite for advanced NLO devices such as optical switches and optical limiters.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.9
Jixia Tang,Yanan Liu,Chenhao Xu,Leping Li,Jia Guo,Jinlian Bi,Wei Li,Lei Zheng,Yujie Yuan
Blue-light synapses have garnered significant attention owing to their potential application value in neuromorphic systems for myopia prevention, control, and the further mitigation of visual trauma. However, existing devices fail to meet neuromorphic application demands for optoelectronic performance and adaptive visual behaviors because of a complex fabrication process and limited blue-light-dependence eye-inspired function. Here, using an optimized microfluidic technology for perovskite quantum dots (QDs) with mild batch manufacturing process and high reproducibility, we developed a MoS 2 /CsPbBr 3 -based synaptic device integrating photo-sensing, memory, and adaptive visual computing capabilities. This was attributed to high blue-light collection efficiency and self-regulated charge transport in the heterostructure, enhancing photosensitivity ( P ) by 9700 times and detectivity ( D* ) by 22 times compared to the pristine 2D-based device, while successfully emulating key biological synaptic behaviors such as paired-pulse facilitation/depression (PPF/PPD) and long-term potentiation/depression (LTP/LTD). Moreover, the developed hybrid device achieved 92% recognition accuracy, compared to 20% for pristine devices, and possessed image pre-processing capabilities for noise reduction and contrast enhancement due to its differential response to varying blue-light pulse densities. The study present a simple method for fabricating optoelectronic synapses, promoting the integration of 2D semiconductors into artificial neural visual systems.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Yi Zhu,Feng Tong,Hui Si,Liji Su,Wenguang Dai,Shu Nie,Zheng Chen,Sheng Huang,Xiuquan Gu
Perovskite quantum dots (PQDs) have shown exceptional optoelectronic properties for displays, but their practical application is hindered by low efficiency and poor stability stemming from high defect density. To address this, a one-pot synthesis has been developed, using ZnO nanocrystals (NCs) as a structure-directing agent to construct a unique sandwich architecture. These QDs consist of a ZnO core, an epitaxially grown CsPbX 3 crystalline domain, and an outer ZnO shell. Theoretical calculations reveal that ZnO incorporation significantly enhances QD stability by raising the formation energy and suppressing defect generation. Consequently, Attributed to effective defect passivation and interfacial stabilization by the ZnO sandwich structure, the PQDs exhibit a high photoluminescence quantum yield (PLQY) of 95%, compared to ~52% for the pristine counterparts. More importantly, the PQD-based composite films exhibit high stability under combined thermal, aqueous, and optical stresses, retaining over 70% of their initial PL intensity, which is markedly higher than that of <30% retained by the control samples. Moreover, continuously tunable emission from 518 to 690 nm was realized by adjusting the halide composition. A high-performance white LED was fabricated by integrating the QD composite film with a blue LED chip, achieving a color gamut covering 134% NTSC and 100% Rec. 2020. This work provides a solution through a one-pot synthesized sandwich structure that concurrently enhances both the efficiency and stability of PQDs, paving the way for future displays.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.9
Peng Chen,Keke Hu,Xinyu Lin,Zhongliao Wang,Yumeng Zhang,Qinzhuang Liu,Zhongliang Liu
Zero-dimensional metal halide perovskites with strong self-trapped exciton (STE) emission are promising for efficient lighting and sensing, but STE → dopant energy transfer is not well quantified. Here we use Sb 3+ -doped Cs 4 PbCl 6 nanocrystals as a model and combine temperature-dependent steady-state and time-resolved photoluminescence, rate-equation analysis and first-principles calculations to clarify the STE → Sb 3+ cascade sensitization. Emission and excitation spectra confirm successful Sb incorporation. The 360 nm ultraviolet band is assigned to STE recombination, whereas the green band originates from STE → Sb 3+ transfer and the Sb 3+ 3 P 1 → 1 S 0 transition. The transfer efficiency (∼64 %) shows that STE feeding dominates the excitation of Sb centers. Low-temperature PL analysis reveals distinct electron–phonon coupling: STE emission couples mainly to low-frequency phonons, while Sb 3+ emission couples more strongly to high-frequency modes. The extracted activation energies and the cooperative increase of τ STE and τ Sb with decreasing temperature support a thermodynamically downhill STE → Sb 3+ migration. Within a rate-equation framework, the rise time of Sb 3+ emission satisfies t rise ≈ τ STE and yields a characteristic cascade-like transient profile. Density-functional calculations indicate Sb-5p acceptor levels inside the bandgap, providing an energetic basis for localized STE → Sb 3+ coupling and design guidelines for efficient 0D perovskite emitters.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 3.9
Feng Min,Bai Zhongchen,Chen Qixin,Peng Xishun,Li Xinghua,Zhang Zhengping
In this study, we selected CsPbBr 3 quantum dots (QDs) as a modification layer of CsPbBr 3 /Carbon interface to facilitate their charge transfer for enhancing the photoelectronic conversion efficiency of ZnO/CsPbBr 3 /carbon solar cell. The results demonstrated that CsPbBr 3 QDs layer simultaneously improved film morphology, composition, and optoelectronic properties. This was achieved by filling pinholes, enlarging grain size, suppressing secondary phases, tuning elemental stoichiometry, enhancing electron transport, and reducing non-radiative recombination. The optimized device achieved an increase in PCE from 5.46% to 7.27%. This method and structure of solar cell we proposed in this paper provides a novel strategy for improving high-performance and high-stability PSCs.
✓ 已验证
产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2026
·
IF 2.6
Yaqin Fu,dan zhang,Yongmin Duan,Zhaojing Kuang,Junjie Zhang
In recent years, rare earth ions doping has enhanced the luminescence performance of perovskite quantum dots (PQDs) glass, but the enhancement mechanism caused by internal energy transfer deserves further study. In this work, a series of CsPbBr3 PQDs doped with different concentrations of Tb3+ ions was prepared in germanium borate glass matrix by traditional melt quenching method and heat treatment process. The experimental results indicate that after introducing Tb3+ ions into the PQDs glass, the photoluminescence intensity has been significantly enhanced, and the photoluminescence quantum yield increased from 14.8% to 46.1%. The occurrence of this phenomenon can be attributed not only to the role of Tb3+ as a nucleating agent in PQDs glass which facilitates the formation of more small-sized CsPbBr3 but also replaces Pb2+, thereby alleviating lattice distortion and passivating defects. Moreover, the core mechanism lies in the energy transfer process between Tb3+ and CsPbBr3. It has been verified that there not only has a radiative photon reabsorption process that Tb3+ can releases photons for CsPbBr3 to absorb but also has a Förster resonance energy transfer process that Tb3+ directly transfers energy to CsPbBr3 in a non-radiative form. Finally, considering the differing thermal attenuation rates of Tb3+ and CsPbBr3 in glass, a temperature-dependent luminescence color-tuning strategy is proposed, which has potential application value in the field of temperature sensing.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2026
·
IF 9.8
Zijun Huang,Feng Tong,Guo Chen,Xuan Chen,Xianjie Xu,Zhefu Mu,Jiaxin Sun,Sheng Huang,Xiuquan Gu
Reliable safety assurance for high-energy lithium-ion batteries (LIBs) necessitates real-time internal diagnostics. Herein, an implantable resistive sensor is presented, which is based on CsPbBr₃ nanocrystals (NCs) passivated by zinc acetylacetonate and embedded in a flexible polymer matrix. By integrating the sensor with a random forest (RF) model, the system not only tracks internal electrochemical changes in situ but also accurately predicts future charge/discharge curves and capacity up to 4500 s in advance (R 2 = 0.99). Density functional theory (DFT) confirms that Li + adsorption narrows the bandgap and enhances conductivity, leading to reliable resistance modulation. This study presents a pioneering implantable perovskite-based sensor integrated with machine learning (ML) for predictive battery diagnostics. The proposed platform enables early detection of degradation and provides a low-cost, scalable, and intelligent route toward enhanced battery safety and advanced energy storage management.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Physical Chemistry C
·
2026
·
IF 3.2
Lihong Qi,Yi Wu,Junwei Zhou,Xiaohu Zhao,Yuanchen Jiang,Qingyuan Zhou,Yusheng He,Jiaxin Rui,Zhaogang Teng,Jianhui Sun,Song Wang,Kai Pan
Lead halide perovskites have emerged as promising candidates for next-generation optoelectronic devices owing to their tunable bandgaps, high photoluminescence efficiency, and excellent carrier transport characteristics. Low-dimensional nanostructures, particularly nanowires (NWs) and nanoplatelets (NPLs), further enhance these properties through anisotropic charge transport and strong quantum confinement; however, direct morphology-dependent comparisons remain limited. Herein, CsPbBr3 NWs and NPLs were synthesized via a ligand-regulated hot-injection strategy that enables precise dimensional control by tuning ligand ratios. The NWs exhibit uniform one-dimensional (1D) geometry (∼9 nm diameter), whereas NPLs form ∼5 nm-thick two-dimensional (2D) structures. Structural and optical analyses reveal morphology-dependent spectral responses in which NWs show exciton absorption and emission at 505/520 nm, while NPLs display pronounced blue-shifts (465/480 nm) due to enhanced vertical confinement. Time-resolved photoluminescence reveals significantly longer exciton lifetimes in NWs (88.06 ns) than NPLs (32.20 ns), indicating reduced defect density and superior radiative recombination characteristics. Femtosecond transient absorption confirms slower carrier trapping and prolonged hot-carrier relaxation in NWs. This comparative study establishes a direct structure–property relationship between 1D and 2D CsPbBr3 nanostructures, offering insight into morphology-guided design for lasers, single-photon emitters, and blue optoelectronic devices.
✓ 已验证
产品关联
DOI
高影响因子
Matter
·
2026
·
IF 15.7
Pengbo Ding,Pui Kei Ko,Mi Gu,Aleksandr A. Sergeev,Mohsen Tamtaji,Yichi Zhang,Yuling Huang,Hang Lyu,Hoi Lam Tammy Tsang,Dezhang Chen,Xihan Chen,Liang Guo,Kam Sing Wong,GuanHua Chen,Xiao Wei Sun,Jonathan E. Halpert
High-entropy alloying (HEA) has been shown to enhance stability and optoelectronic properties in various materials, including recent demonstrations in perovskite nanocrystals (PNCs). However, the use of HEA-PNCs outside traditional optoelectronics, specifically as single-photon sources (SPSs) for quantum information science, remains largely unexplored. Here, we demonstrate that HEA intrinsically improves the room temperature performance of PNC-based SPSs. By introducing multiple divalent cations at the Pb site, we create a high-entropy crystal lattice that facilitates exciton localization, enhancing radiative recombination while suppressing trap-assisted and phonon-mediated losses. Ab initio molecular dynamics simulations corroborate exciton localization and reveal that reduced electron-phonon coupling in HEA-PNCs diminishes exciton dephasing. Consequently, our HEA-PNCs exhibit a high single-photon emission purity of 96%, with nearly non-blinking emission at room temperature, marking the first intrinsic materials-based solution to achieve such performance. These results establish HEA as a robust design principle for next-generation room temperature PNC-based quantum emitters.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 7
·495
·
IF 3.2
Xie Yaochen,Liu Guangli,Wu Shiqi,Xu Zicong,Ye Jianheng,Qian Yannan
The development of deep-blue emitting perovskite quantum dots (PeQDs) has been significantly hindered by the surface defects and halide migration. To overcome these problems, a synergistic strategy combining strong quantum confinement and mixed-halide engineering was proposed to achieve highly efficient deep-blue emission. An excellent multidentate ligand 1-carboxymethyl-3-methylim-idazolium chloride (HOOCMIMCl) was introduced into CsPbBr 3 QDs, resulting in ultra-small monodisperse particles with an average diameter of 4.2 nm. The ultra-small CsPbBr 3 QDs exhibited deep-blue emission at 457 nm with a high photoluminescence quantum yield (PLQY) of 77%. Based on density functional theory (DFT) calculations and experimental results, HOOCMIMCl ligand also passivated uncoordinated Pb 2+ by C = O and reduced bromine vacancies (V Br ) through C = N in imidazole ring, improving the PLQY and stability of CsPbBr₃ QDs. It opens a new pathway for realizing highly efficient deep-blue emitting PeQDs with a tunable emission wavelength and offers a research basis for advancing high-performance PeLEDs in the deep-blue region.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）