Science Advances
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2026
·Vol. 12
·期 13
·
IF 13.9
Yuxiang Zhan,Kunpeng Zhao,Hexige Wuliji,Yifan Yuan,Xiang Liu,Tian-Ran Wei,Ting Zhang,Min Zhu,Xun Shi
(Ag,Cu) 2 (S,Se,Te) alloys, as rare examples of p-type inorganic ductile semiconductors, have emerged as promising candidates for wearable electronics because of their mechanical flexibility and favorable processability. However, the multicomponent nature of this system introduces diverse microstructures and intricate defect landscapes that complicate the optimization of thermoelectric performance. Here, we reveal the presence of compositionally inhomogeneous yet structurally coherent nanoscale chemical fluctuations within this alloy system. These fluctuations, together with abundant dislocations and twin boundaries, serve as efficient phonon scattering centers to suppress the lattice thermal conductivity to approach glass-like levels. Concurrently, tuning the cation ratios and vacancies allows for precise control over the carrier concentration and thereby leads to enhanced power factors. Last, a peak zT of 0.98 at 360 kelvins is achieved, marking a record for Ag-based ductile thermoelectrics. This study highlights the essential role of chemical fluctuations in modulating phonon and charge transports and offers valuable insight into the microstructure-defect–property interplay in ductile materials.
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Advanced Energy Materials
·
2023
·Vol. 14
·期 10
·2303473
·
IF 27.8
Heyang Chen,Chenlu Shao,Shaoji Huang,Zhiqiang Gao,Haoran Huang,Zhenyu Pan,Kunpeng Zhao,Pengfei Qiu,Tian-Ran Wei,Xun Shi
The discovery of ductile Ag 2 (S, Se, Te) materials opens a new avenue toward high-performance flexible/hetero-shaped thermoelectrics. Specifically, the cubic-structured materials are quite attractive by combining remarkable plasticity, decent thermoelectric figure of merit ( zT ), and no phase transition above room temperature. However, such materials are quite few and the understanding is inadequate on their mechanical and thermoelectric properties. Enlightened by the high-entropy principles, a series of pseudo-ternary Ag 2 S-Ag 2 Se-Ag 2 Te alloys is designed and comprehensive diagrams of composition-structure-plasticity- zT are compiled. Subsequently, the compositional region for the cubic phase is outlined. As a high-entropy example featuring with anion-site alloying and disordered Ag ions, Ag 2- x S 1/3 Se 1/3 Te 1/3 materials exhibit impressively large elongations of 60–97%, ultralow lattice thermal conductivities of ≈0.2 W m −1 K −1 , and decent zT values of 0.45 at 300 K, 0.8 at 460 K. The materials can be readily rolled into thin foils, showing excellent flexibility. Finally, a six-leg in-plane device is fabricated, achieving an output voltage of 13.6 mV, a maximal power of 12.8 µW, and a power density of 14.3 W m −2 under the temperature difference of 30 K, much higher than the organic counterparts. This study largely enriches the members of cubic ductile inorganic materials for the applications in flexible and hetero-shaped energy and electronic devices.
研究领域:
材料科学
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凝聚态物理
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无机固体化学
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热电转换
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柔性电子学
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
·
IF 21.1
Bonan Li,Xi Zhang,Mengxue Chen,Xi Huang,Xiao Fang,Yanfang Yang,Yuanyuan Li,Baochun Ma,Yong Ding
Single-component metallic Te photocatalysts suffer from rapid oxidation in air, while sulfide-based SnS 2 is prone to photocorrosion under prolonged illumination, both severely limiting their photocatalytic efficiency. To address these challenges, we designed an S-scheme heterojunction by uniformly loading SnS 2 nanosheets onto Te nanowires (Te@SnS 2 ). This heterostructure not only suppresses Te oxidation but also facilitates efficient charge separation via the S-scheme mechanism. Further integration of [Co 4 (H 2 O) 2 (PW 9 O 34 ) 2 ] 10- (Co4POM) onto Te@SnS 2 yields the Te@SnS 2 -Co4POM photocatalyst, where Co4POM serves as a hole co-catalyst to enhance activity and inhibit SnS 2 photocorrosion. The system employs two discrete charge-transfer channels, with electrons separated at the Te@SnS 2 S-scheme heterojunction and holes migrating from SnS 2 to Co4POM, thereby spatially separating reduction and oxidation sites and markedly enhancing carrier separation, catalytic activity and durability. The multi-channel charge transfer pathways enabled by Te@SnS 2 -Co4POM synergize component interactions, achieving a CO production rate of 92.6 μmol g −1 h −1 with 97.7 % selectivity in gas-solid CO 2 reduction, alongside effective coupling of CO 2 photoreduction and water photooxidation. In situ DRIFTS, quasi-in situ XPS and irradiated KPFM studies confirm the S-scheme electron transfer in Te@SnS 2 and reveal Co4POM’s role in establishing multi-channel charge transport. This work demonstrates a rational strategy to overcome stability and efficiency bottlenecks in photocatalysis through multi-component charge channel engineering.
研究领域:
材料科学
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光催化
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环境科学
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Advanced Optical Materials
·
2024
·Vol. 12
·期 25
·2400776
·
IF 8
Yu Yu,Zhiyuan Dai,Haibiao Guan,Ruowen Wang,Tao Ye,Yonghao Bu,Jie Deng,Mengdie Shi,Liaoxin Sun,Rui Xin,Tianxin Li,Haibo Shu,Xiaoshuang Chen,Jing Zhou
Blackbody-sensitive uncooled infrared photodetectors with ultra-broadband and ultrafast photoresponse have a profound impact on many areas of modern science and technology. However, it is a big challenge for both traditional photodetectors and emerging low-dimensional ones to simultaneously have all the above characteristics. Here, this challenge is addressed by establishing a Te/WTe 2 heterostructure photodetector. The built-in field of the heterostructure and the crossing conduction and valence bands of WTe 2 jointly result in a high responsivity and a visible-to-long-wavelength-infrared photoresponse range. The peak responsivity (at the 3.3 µm wavelength) reaches 914 mA W −1 at zero bias and 8.51 A W −1 at 2 V bias. Further, the joint action coupled with the high mobility of Te and WTe 2 promotes the 3-dB bandwidth to 153 kHz. The self-powered blackbody responsivity and specific detectivity reach 235.7 mA W −1 and 1.1 × 10 8 cm Hz 1/2 W −1 , respectively. The former increases to 5.82 A W −1 at 1 V bias. Moreover, this device is polarization-sensitive with a contrast ratio of 2. This work reveals the potential of the Te/WTe 2 heterostructure for high-performance room-temperature infrared photodetectors.
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Materials Today Nano
·
2022
·
IF 13.364
Zhuolei Liu,Sining Yun,Menglong Sun,Jiaoe Dang,Yongwei Zhang,Yinhao Wang,Changwei Dang,Yingying Deng,Dan Qiao
Herein, we designed and constructed MoS 2 @Co 1.11 Te 2 /Co-doped nitrogen carbon dodecahedron with Te nanorods (Co-NCD-T) by rational structure engineering. The as-synthesized MoS 2 @Co 1.11 Te 2 /Co-NCD-T composite served as a bifunctional catalyst for the hydrogen evolution reaction and triiodide reduction reaction. The incorporation of Te nanorods provided additional charge transport channels and subsequently accelerated the electron transport between the electrode and electrolyte. The synergistic effect between Co 1.11 Te 2 and MoS 2 further enhanced the catalytic activity. The MoS 2 @Co 1.11 Te 2 /Co-NCD-T electrode catalyst showed an overpotential of 124 mV when the current density was 10 mA·cm −2 and a small Tafel slope of 49 mV·dec −1 in an alkaline medium. The assembled solar cell exhibited a superior conversion efficiency of 9.00%, significantly higher than Pt (7.32%). The proposed strategy based on rational structure engineering is expected to facilitate the fabrication of hybrids for multi-functional applications.
研究领域:
材料科学
·
催化化学
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Jia Song,Yunfei Ma,Qitao Zhang,Chaohua Zhang,Xuelian Wu
The photocatalytic oxygen evolution of bismuth oxybromide (BiOBr) is greatly hindered by its low visible-light response and high electron–hole recombination. Nonmetal doping can effectively alleviate these issues, leading to improvement in photocatalytic performance. Herein, Bi2Te3 was introduced as both the Te doping source and the morphology-control template to improve the photocatalytic performance of BiOBr. Appropriate amounts of Te are critical to maintain the ultrathin plate-like structure of BiOBr, whereas excessive Te results in the formation of a flower-like architecture. Oxygen evolution activity disclosed that a plate-like structure is essential for realizing higher performance owing to sufficient light utilization and efficient charge separation. An optimal oxygen evolution rate of 368.0 μmol h–1 g–1 was achieved for the Te-doped sample, which is 2.3-fold as that of the undoped BiOBr (158.9 μmol h–1 g–1). Theoretical calculations demonstrated that Te doping can induce impurity levels above the valence band of BiOBr, which slightly narrowed the band gap and strengthened the light absorption in the range of 400–800 nm. More importantly, Te dopants could act as shallow traps for confining the excited electrons, thus prolonging the carrier lifetime. This work provides a novel strategy to prepare highly efficient photocatalysts by simultaneously realizing morphology manipulation and nonmetal doping.
研究领域:
材料科学
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化学
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光催化
·
纳米技术
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PubMed
高影响因子
ACS Photonics
·
2025
·
IF 6.7
Lijian Li,Peng Guo,WenJie Li,Yun Wei,QinZhi Zhao,Peng Wan,Caixia Kan,Da Ning Shi,Mingming Jiang
Weyl semiconductor Te holds great promise for next-generation optoelectronics due to its ultrahigh carrier mobility and unique topological surface states. However, its practical application is hindered by challenges such as the lack of scalable wafer-scale manufacturing methods for uniform films and high dark current. This study reports an in situ deposition strategy enabling wafer-scale fabrication of 64-pixel GaAs/Te van der Waals heterojunction (vdWH) arrays, achieving ultrawide-band photoresponse from solar-blind to near-infrared. Especially upon 1050 nm illumination, a GaAs/Te unit device exhibits superior performance, including an impressive responsivity of 55 mA/W, a specific detectivity of 2 × 1012 Jones, and a fast response speed of 2.6/5.1 ms at 0 V bias. Owing to the strong in-plane anisotropy of the Te layer, the detector achieves an anisotropy ratio of 2.57 at 1050 nm. The enhanced performance primarily stems from Te’s topological surface state, which enables robust interlayer coupling with GaAs while effectively suppressing interfacial defects. The GaAs/Te array architecture, enabled by its remarkable spatial uniformity in the pixel arrangement, demonstrates exceptional potential for polarization-encrypted imaging and pixel-level multispectral fusion technologies. Significantly, the implementation of topological vdW contact engineering, coupled with wafer-scale synthesis of Weyl semiconductor Te, establishes a transformative platform for advancing next-generation optoelectronic systems and CMOS-integrated photonic devices.
研究领域:
光电子学
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拓扑材料
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纳米电子学
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异质结构工程
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光电探测器
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Laser & Photonics Reviews
·
2026
·
IF 9.7
Yiming Zhao,Artem V. Kuklin,Jiahui Hou,Mingqi He,Lyudmila V. Begunovich,Han Zhang,Ying Li,Hans Ågren,Lingfeng Gao
Along with the increased attention of core–shell heterojunction quantum dots (QDs), there have been recent strong efforts to improve their practical applications by developing the synthetic approaches. In this work, uniform Te@Se core–shell QDs have been successfully fabricated via combining liquid-phase exfoliation and epitaxial growth methods, where the similar lattice structures of the materials from the same main group can effectively solve the lattice mismatch issue. Theoretical calculations reveal that the Te@Se material is a Type-I heterojunction with favorable initial electron transfer from core Te to shell Se upon formation. The photo-response performance of Te@Se QDs is systematically investigated by producing photoelectrochemical type photodetectors in low concentration electrolytes (0.1–10 mM), for which optimized photocurrent density (32.63 µA/cm 2 ) and photoresponsivity (1564 µA/W) could be achieved. The device also exhibits fast response and excellent stability, which could overcome instability issues in high-concentration electrolytes and expand the practical applications.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Weixin Zhang,Xin He,Ting Zhang,Haomiao Li,Shuai Yan,Xianbo Zhou,Yewei Guo,Min Zhou,Wei Wang,Kai Jiang,Kangli Wang
Liquid metal batteries (LMBs) are an attractive large-scale energy storage technology due to their ultra-long service life, high safety, and exceptionally low comprehensive cost. Te-based LMBs are regarded as one of the most promising directions for developing high-energy-density LMBs. However, their practical application is still hindered by low Coulombic efficiency and short cycle life, primarily due to the shuttle effect induced by the dissolution of reaction products. Herein, the strategy of employing transition metal (Cu) with strong polar interactions with lithium polytellurides as the alloying element to construct cathode is proposed. Benefiting from the strong adsorption and conversion-promoting capabilities of in-situ generated metal tellurides (CuTe and Cu 4 Te 3 ) towards lithium polytellurides, the shuttle effect is significantly suppressed. The designed Li||Te 7 Cu 3 LMBs deliver a stable cycling performance of over 848 cycles with a coulombic efficiency exceeding 97%, ultrahigh energy density (465 Wh kg −1 ) and outstanding rate performance (2.1C, >90% capacity retention). This study opens up new avenues for designing high-performance Te-based LMB cathodes.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yanqing Zu,Run Gan,Lixia Jing,Bing Yang,Binglin Zeng,Liru Yuan,Peitao Liu,Xiaodong Li,Ailing Feng,Lei Zhou
Lead-free vacancy-ordered double perovskites are promising scintillator candidates for X-ray imaging due to their excellent photoluminescence and low afterglow. However, the defect-related nonradiative recombination will decrease their photoluminescence intensity as well as scintillation performance. In this work, a facile room-temperature recrystallization approach was used to prepare high-quality Cs 2 HfCl 6 :1% Te perovskites microcrystals with suppressed defects via in situ ligand passivation with cationic quaternary ammonium surfactants. By tuning the chain length of ligands, dodecyltrimethylammonium chloride (DTAC) passivated Cs 2 HfCl 6 :1% Te possesses a high photoluminescence quantum yield (PLQY) up to 73.87%, which is higher than that of didodecyldimethylammonium chloride (DDAC) passivated Cs 2 HfCl 6 :1% Te. The improved performances of perovskites were further clarified by density functional theory (DFT) computations, which reveal that a larger binding energy for DTAC (−2.069 eV) exceeds that of DDAC (−1.891 eV). The Cs 2 HfCl 6 :1% Te (DTAC) exhibits a high spatial resolution (10 lp mm −1 ) and notable light yield (19,693 photons MeV −1 ). This study provides an effective strategy for defect suppression in perovskite scintillators, facilitating their use in high-resolution X-ray imaging.
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Journal of Energy Storage
·
2026
·
IF 10.7
Shujie Liu,Bohao Wang,Haiguang Guo,Xiaoying Hu,Liang Qiao,Ting Deng
Metal tellurides (MTs) as potential electrode materials for sodium-ion battery suffer from detrimental volume expansion, followed by severe capacity degradation. Herein, an inbuilt Zr Te framework is introduced into CoTe 2 to boost the overall electrochemical performance of sodium ion storage. The ex-situ XPS results suggest that the Zr Te framework is unreactive, which can counteract the volume expansion due to the large size of Zr atom. In addition, the suitable introduction of Zr shall decrease the adsorption energy and diffusion barrier of Na + ion, proved by density functional theoretical calculations. As a result, Zr-CoTe 2 with the inbuilt and unreactive Zr Te framework can deliver a maximum capacity of 357 mAh g −1 at 0.05 A g −1 , an outstanding rate capability (121 mAh g −1 at 5 A g −1 ), and an enhanced cyclability (85% retention after 1000 cycles at 1 A g −1 ).
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Journal of Materials Chemistry C
·
2026
·
IF 5.1
Yuxin Huang,Pengfan Li,Xuewei Yu,Lin Sun,Yanfeng Jiang,Pingping Yu
Organic-inorganic hybrid perovskite ferroelectrics with a two-dimensional (2D) structure offer a unique pathway for selfpowered polarization detection, yet their performances is often limited by insufficient anisotropic ratios and carrier separation efficiency. 1D Te microwires exhibits strong broad spectral response, high carrier mobility and pronounced structural anisotropy. In this study, 2D single crystal (EA)2(MA)2Pb3Cl10 (EMPC3) with millimeter scale was synthesized by temperature-lowering method from a saturated solution. The Te microwires prepared by chemical vapor deposition (CVD) method was coated on EMPC3 crystal to obtain the Te/EMPC3 heterojunction. Due to the synergistic effect of the ferroelectric photovoltaic effect of EMPC3 and the built-in electric field of heterojunction, the Te/EMPC3 device exhibits significantly enhanced self-powered photoresponse performances in the 280-1006 nm, showing the highest peak responsivity in the solar blind ultraviolet region. Te/EMPC3 device at 280 nm and 0 V exhibits a higher on/off ratio up to 103, responsivity of 2. 34 A W -1 , specific detectivity of 4.5×10 12 Jones, rise/decay time of 43/33 ms, and dichroic ratio of 3.0, respectively, compared to EMPC3 PD at 1.2 V (on/off ratio of 178, 0.95 A W -1 , 1.1×10 12 Jones, response time of 105/103 ms, and dichroic ratio of 1.8). The significantly enhanced anisotropy ratio renders the device highly promising for applications in polarization imaging and dual-wavelength encrypted communications. This demonstrates the potential of the heterojunction system as a new platform for next-generation, self-powered, polarization-sensitive optoelectronics.
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