ADVANCED FUNCTIONAL MATERIALS
·
2025
·Vol. 35
·期 34
·2423333
·
IF 19
Yuan Li,Min Zhao,Xiudong Ma,Liang Zhang,Shangzhou Zhao,Wlodek Strupinski,Xiangyu Zeng,Mingjia Zhang,Yufeng Hao
Memtransistors with nonvolatile storage, reconfigurability, and simulated synaptic functions are critical to overcoming the traditional von Neumann computer architecture bottleneck. Emerging two-dimensional van der Waals heterostructures (vdW) are promising candidates for constructing advanced three-terminal memtransistors by integrating the intriguing features of different materials and offering additional controllability over their existing optoelectronic properties. Herein, molybdenum disulfide (MoS 2 )/Tellurene (Te) vdW p-n junction memtransistors are fabricated to mimic the plasticity, multi-bit memory, and paired-pulse facilitation behavior of biological synapses. The high surface potential difference and charge trapping of the MoS 2 /Te heterostructure can endow the device with reconfigurable functionality through the transformation from short-term plasticity to long-term plasticity under illumination. Meanwhile, optoelectronic synaptic memtransistors also demonstrate nonvolatile behavior with a long retention time up to several hours, which can realize optical potentiation and electrical depression in one synaptic activity. On this basis, a logical operation of “OR” is realized by controlling the optical and electrical inputs. Moreover, artificial neural network training is performed to achieve a high recognition accuracy of 87.8% for handwritten digit recognition, demonstrating the potential of the artificial optoelectronic synapses in neuromorphic calculation.
研究领域:
纳米电子学
·
神经形态工程
·
光电子学
·
二维材料
·
人工智能硬件
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DOI
高影响因子
Journal of Physical Chemistry C
·
2012
·
IF 4.805
Yuewu Zhao,Huile Jin,Huan Zhou,Juanjuan Lin,Shun Wang,Jichang Wang
Te@Pd core–shell hybrids were prepared in this study, in which a pine leaf-shaped microstructure was obtained through controlling the synthesis kinetics of single crystal Te. The as-prepared Te was subsequently utilized as the substrate for Pd coating. These core–shell particles were characterized with scanning and transmission electron microscopy, high resolution transmission electron microscopy, X-ray diffraction, and energy dispersive X-ray spectroscopy. When being applied as a catalyst in bromobenzene and phenylboronic acid reaction, 100% conversion of bromobenzene was achieved in less than 3 h, which was much shorter than that required by the reactions using graphene oxide supported Pd catalyst (4 h) or the commercial Pd/C catalyst (>6 h). The Te@Pd core–shell catalyst could be easily recovered from the reaction solution and be used repeatedly. The high catalytic activity of Te@Pd hybrids is attributed to their unique microstructure.
研究领域:
材料科学
·
催化化学
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Jiayou Xue,Xuke Yang,Xiaoqing Bao,Liuchong Fu,Sen Li,Menglin Huang,Jun Wang,Haisheng Song,Shiyou Chen,Chao Chen,Kanghua Li,Jiang Tang
Cadmium selenide (CdSe) solar cells have proven to be a remarkable potential top cell for a silicon-based tandem application. However, the defects and short carrier lifetimes of CdSe thin films greatly limit the solar cell performance. In this work, a Te-doped strategy is proposed to passivate the Se vacancy defects and increase the carrier lifetime of the CdSe thin film. The theoretical calculation helps to reveal the mechanism of nonradiative recombination of the CdSe thin film in depth. After Te-doping, the calculated capture coefficient of CdSe can be reduced from 4.61 × 10–8 cm3 s–1 to 2.32 × 10–9 cm3 s–1. Meanwhile, the carrier lifetime of CdSe thin film is increased nearly 3-fold from 0.53 to 1.43 ns. Finally, the efficiency of the Cd(Se,Te) solar cell is improved to 4.11%, about a relative 36.5% improvement compared to the pure CdSe solar cell. Both theoretical calculations and experiments prove that Te can effectively passivate bulk defects and improve the carrier lifetime of CdSe thin films, deserving further exploration to improve solar cell performance.
研究领域:
材料科学
·
光伏技术
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 3.9
Hu T. T.,Xie Y. X.,Zhao K.,Yang X. S.
Trace oxygen-doped FeSe 0.4 Te 0.6 single crystals were synthesized using the self-flux method to investigate the effects of oxygen incorporation on their crystal structure, superconducting transition, and flux pinning properties. Experimental results indicate that trace O-doping effectively modulates the superconducting transition temperature ( T c ) and enhances the critical current density ( J c ), with a more pronounced improvement in current-carrying capacity observed under high magnetic fields. Based on the Dew–Hughes model analysis, the sample with 0.5% O-doping exhibits the most robust pinning effect. This study demonstrates that trace oxygen doping can effectively optimize the superconducting performance of FeSe 0.4 Te 0.6 and reveals the existence of an optimal doping regime, which provides valuable insights into the mechanism and practical application of iron-based superconductors.
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DOI
高影响因子
Journal of Materiomics
·
2023
·Vol. 10
·期 1
·37-44
·
IF 9.4
Wenxiu Li,Su Dun,Bin Xiao,Jun Wang,Xinba Yaer,Chun Ying,Ye Li,Xiaohuan Wang,Huijun Kang
Cu 2 Te-based materials are a type of superionic conductor belonging to the class of phonon-liquid electron-crystal materials and have achieved high ZT values by doping and nanostructuring. However, it is easy to form copper vacancies in Cu 2 Te which leads to an excessive carrier concentration and then results in a low Seebeck coefficient. Hence, controlling copper ion migration and optimizing carrier concentration is essential to improve the thermoelectric performance of Cu 2 Te. This paper reports high-performance Cu 2 Te Ag 2 Te composite with high application value in the low-middle temperature region, which is achieved by fine tuning the carrier concentration using Fe addition and non-stoichiometric Te, as well as controlling the thermal conductivity of composite. A high ZT of ∼1.2 is obtained in AgCu 0.97 Fe 0.03 Te 0.96 at a low temperature of 573 K. Meanwhile, the phase transition mechanism of Cu 2 Te Ag 2 Te and its effect on the thermoelectric transport performance are revealed that go beyond nanostructuring and single-doping, which provides a strong theoretical basis for research and performance improvement of thermoelectric materials in this system.
研究领域:
材料科学
·
热电学
·
固体物理
·
能量转换材料
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DOI
高影响因子
Laser & Photonics Reviews
·
2026
·
IF 9.7
Shiwei Zhang,Jianxian He,Haozhe Li,Zirou Luo,Baojun Pan,Kaiwen Gong,Shaochang Liang,Yao Yao,Aoran Geng,Yixun Liang,Haoran Mu,Guolin Hao,Guangyu Zhang,Shenghuang Lin
Van der Waals materials and their heterostructures offer strong gate tunability, enabling multilevel and polarity-switchable photoresponse states in programmable photodetectors for in-sensor encoding and computing. However, current gate-programmable photodetectors often rely on trap-mediated mechanisms, where charge capture and release can lead to nonlinear weight modulation and slow transient response. Achieving linear modulation of photoresponse weights while maintaining fast photoresponse therefore remains challenging. Here, we present a Te/MoTe 2 reconfigurable photodetector governed by gate-modulated interfacial built-in fields. Under zero drain bias, the short-circuit photocurrent can be continuously tuned from negative to positive values, giving rise to linear bipolar responsivity modulation with a coefficient of determination (R 2 ) of 0.99 over the V gs range from −44 to −14 V, which contains 31 experimentally distinguishable bipolar photoresponse states. A fast transient response of 3 µs is maintained during gate-programmed polarity switching. The 3 × 3 device array further demonstrates pixel-to-pixel reproducibility in responsivity modulation and response speed, supporting convolutional-kernel-based image processing and event-driven motion recognition. This work provides a built-in-field-dominated gate-programming strategy for low-power, fast, and linearly reconfigurable optoelectronic devices for in-sensor computing.
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DOI
高影响因子
ACS Applied Polymer Materials
·
2026
·
IF 5.2
Yang Yuteng,Ye Yanbo,Zhao Kexin,Xu Mingxuan,Song Haijun
Wearable
sensors serve as pivotal components in next-generation
healthcare monitoring and intelligent electronic systems, yet their
applications are limited by poor multifunctionality, signal interference,
unsatisfactory flexibility, and external power reliance. Herein, we
report an integrated temperature/pressure dual-mode sensor constructed
by incorporating Te–Bi 2 Te 3 /poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)
(PEDOT:PSS) nanocomposite thermoelectric (TE) materials into a commercial
aerogel matrix. The proposed architecture synergistically couples
the TE and piezoresistive effects, enabling independent conversion
of thermal and mechanical stimuli into decoupled electrical outputs
(i.e., voltage and resistance signals, respectively). Notably, the
Te–Bi 2 Te 3 /PEDOT:PSS-based sensor exhibits
high-fidelity temperature-sensing performance, with a maximum Seebeck
coefficient of 95.46 μV·K –1 and a minimum
distinguishable temperature difference of 0.1 K. Meanwhile, the inherent
elasticity and hierarchical porous structure of the aerogel scaffold,
combined with the excellent electrical conductivity of the nanocomposite,
endow the sensor with outstanding pressure-sensing capability, allowing
reliable detection of both static and dynamic stimuli with robust
mechanical stability and excellent cycling durability. Furthermore,
the introduction of TE functionality enables self-powered operation
of the device, which can efficiently harvest low-grade thermal energy
from the temperature gradient between human skin and the ambient environment.
Collectively, these merits highlight the considerable application
potential of the proposed dual-mode sensor in advanced wearable electronics
and self-sustained sensing platforms.
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Wenbin Wang,Wei Yang,Xin Yu,Tao Long,Sha Deng,Qiya Bian,Qingyun Ji,Yunlong Guo
Developing efficient electrochemical hydrogen evolution reactions (HER) and nitrate reduction reactions (NitRR) is of great significance for alleviating the growing energy demand and environmental pollution. In this study, Te–Cu 2 O/NiMo electrocatalyst with nanospheres structure was successfully synthesized on foam nickel molybdenum substrate by electrodeposition, and its performance in electrochemical hydrogen evolution reaction (HER) and nitrate reduction reaction (NitRR) was further evaluated. In a 1.0 M KOH solution, the Te–Cu 2 O/NiMo catalyst exhibits good catalytic activity at a current density of 10 mA cm −2 , with an overpotential of 140.67 mV and a Tafel slope of 136.72 mV dec −1 . Further testing showed that at current densities above 120 mA cm −2 , the performance of the catalyst even surpassed that of commercial Pt/C. In addition, Te–Cu 2 O/NiMo exhibits good stability during electrolysis that is up to 60 h. During the nitrate reduction process, the catalyst increased the nitrate removal rate to 65 % within 180 min of constant current electrolysis, while achieving a NH 4 + - N conversion efficiency of 59.1 %, with almost negligible NO 2 − - N generation. In summary, Te–Cu 2 O/NiMo catalyst exhibits dual functional advantages in HER and NitRR, providing new ideas and application prospects for the development of efficient electrocatalysts.
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DOI
高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
·
2025
·
IF 3.5
Yuxin Shao,Chengwei Gao,Yanqing Fu,Shiliang Kang,Linling Tan,Baoan Song,Shixun Dai,Changgui Lin
Superionic β -Ag 2 S demonstrates exceptional ionic conductivity and ductility, rendering highly promising for applications in electrochemical sensors, thermoelectric devices and solid-state electrolytes. However, it is still haunted by the limited thermodynamic stability, transitioning to the poorly conductive α -Ag 2 S phase upon cooling to room temperature (RT). Herein, a solid solution formed by partial isovalent substitution of sulfur with tellurium stabilizes the superionic phase via the substantial atomic-size mismatch between S and Te. Specifically, Ag 2 S 1-x Te x (0.2 ≤ x ≤ 0.8) maintain superionic phase at RT without observable phase transition upon cooling. This stabilized superionic phase originates from the substantial size mismatched between S and Te. Furthermore, the anion disorder caused by the local volume expansion introduced by large-radius Te reduces the activation energy the activation energy barrier and provides more vacancies for Ag + ion transportation. This work confirms the efficiency of crystal amorphization strategy for stabilizing high-temperature superionic phases at ambient conditions, enabling the development of superionic conductors.
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DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Xinyang Zhang,Xiaoyu Yang,Yingjun Wei,Dewei Wang,Yuhong Chen
Aqueous zinc–manganese dioxide (Zn–MnO2) batteries hold great promises for large-scale energy storage but face several challenges, such as dendrite formation on the anode and structural instability of the cathode. Herein, we propose an aqueous tellurium–manganese dioxide (Te–MnO2) battery, which employs carbon-supported tellurium (C@Te) to replace the Zn metal anode coupled with vanadium-doped MnO2 (Mn1−xVxO2) cathode, as an alternative to overcome the intrinsic limitations of conventional Zn–MnO2 batteries. Notably, Mn1−xVxO2 can be produced through a room-temperature redox method, enabling effective V5+ ion doping in various α-, β-, γ-, and δ-MnO2 polymorphs. The resulting Mn1−xVxO2 exhibits enhanced structural stability due to the suppressed Jahn–Teller distortion and improved electronic conductivity resulting from V 3d/O 2p orbital hybridization. Consequently, the Mn1−xVxO2 cathode delivers a high specific capacity of 323.7 mAh g−1 at 0.1 A g−1 and 93.5% capacity retention after 1000 cycles at 0.5 A g−1, which significantly surpass those of the pristine MnO2 (P-MnO2). Mechanistic investigations and theoretical calculations further unveil a synergistic mechanism involving enhanced electron transport, optimized ion adsorption, and improved structural stability, demonstrating that V5+ doping promotes reversible H+/Zn2+ co-intercalation. Our study shows that Te–MnO2 batteries can offer a viable alternative to conventional Zn–MnO2 batteries and afford a universal synthesis strategy for Mn1−xVxO2.
研究领域:
储能
·
材料科学
·
电化学
·
电池技术
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DOI
高影响因子
CRYSTENGCOMM
·
2015
·Vol. 17
·期 17
·3243-3250
·
IF 4.034
Shilin Fu,Kai Cai,Long Wu,Heyou Han
A convenient method was developed for controllable synthesis of homogeneous trigonal Te/Se alloy nanorods (t-Te/Se ANRs) with diverse morphologies, aspect ratios and compositions at room temperature in aqueous solution. These alloy nanorods were formed by a self-seeding process. By varying the molar ratio of TeO2 to H2SeO3 (x(Te : Se)) in the initial precursors, the morphology of t-Te/Se ANRs was transformed mainly via two paths: formation of tri-fold nanorods (TNRs) or single nanorods (SNRs). The nanostructures of TNRs were generated only by using x(Te : Se) ranging from 30 : 1 to 10 : 1, and SNRs were formed using x(Te : Se) ranging from 200 : 1 to 100 : 1 or 2 : 1 to 1 : 1. The microstructures, compositions, and growth mechanisms of these nanorods were also analyzed in detail.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19
Yifan Yuan,Kunpeng Zhao,Qingyong Ren,Haotian Gao,Yuxiang Zhan,Tian-Ran Wei,Ting Zhang,Xun Shi
Flexible thermoelectric materials offer a promising route toward self-powered wearable electronics. The emergence of ductile inorganic semiconductors opens a new paradigm for flexible TE technologies, yet their thermoelectric performance remains far from optimal. Herein, we reveal a pronounced phase-transition hysteresis in the Ag 2 (S, Se, Te) system, where the transition temperature during cooling is 20–40 K lower than that during heating. Leveraging this hysteresis behavior, we successfully stabilize different structural phases at ambient conditions simply by varying the thermal treatment protocol. Compared to the monoclinic phase obtained by slow cooling from high temperature, the orthorhombic phase obtained by liquid-nitrogen treatment exhibits worse plastic deformation but much better electrical transport. A maximum power factor of ∼16 µW cm −1 K −2 and a zT of ∼0.5 near room temperature are achieved in the orthorhombic phase, both of which surpass most reported Ag-based ductile thermoelectric materials. This work provides a new pathway for designing high-performance ductile thermoelectrics.
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高影响因子
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