MATERIALS LETTERS
·
2025
·
IF 2.7
Jiayin Wang,Kefei Cheng,Chuangjian Li,Fan Wang,Xianghan Ye,Kaijia Xu,Yinyin Qian
The growing demand for optoelectronic applications in portable smart devices has driven considerable interest in flexible photodetectors (PDs), owing to their outstanding flexibility and portability. In this study, we demonstrate a straightforward fabrication of flexible PDs based on self-assembled Sb 2 Te 3 /Te multilayer heterojunction nanostructure. The device exhibits a self-powered broadband photoresponse (405–980 nm), achieving a responsivity of 0.2 A/W and a specific detectivity of 2.2 × 10 10 Jones under 405 nm illumination. Mechanical bending tests further reveal excellent stability and robustness against external deformation. These results not only demonstrate a promising route toward high-performance flexible PDs, but also highlight the novelty of Sb 2 Te 3 /Te heterojunction engineering compared with previously reported systems.
研究领域:
材料科学
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纳米科技
·
凝聚态物理
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Wanying Wu,Mengmeng Lun,Zhifeng Xing,Hanzhao Song,Aihua Yao,Xunsheng Zhou,Zhong Wan,Kun-ming Gu,Sheng Yu,Qiliang Li,Yinzhen Wang,Wei Li,Guannan He,Benli Chu,Qinyu He
Te doped Yttrium-aluminum (Y 2 O 3 –Al 2 O 3 ) system powders were synthesized by solid-state method. The structure and optical properties were investigated by XRD , SEM, XPS and PL. XRD analysis indicated that the samples transform from YAM, YAP to YAG phase as the sintering temperature rises. The samples sintered below 1200 °C have a broad emission centered at 604 nm with a lifetime up to 13.33 μs under room temperature. While in the mix phase of YAP and YAG, a sharp and intense emission peak centered at 715 nm was monitored with a lifetime up to approximate 2.76 ms. Moreover, the band structure and density of states for Te doped YAGwere investigated by first-principle calculations.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
ChemCatChem
·
2019
·Vol. 11
·期 9
·2283-2287
·
IF 4.495
Ling Bai,Yujie Li,Jun Zhao,Yunkai Bao,Lifei Ji,Jianying Dai,Huilan Shi,Fengchun Yang,Xin Zhang
Graphical A mischievous child or a sea creature ? The urchin-like Te template is fabricated by photo-assisted electro-deposition at the PsS substrate, which was then used for replacing trace Pt, Au and Rh to obtain the Pt@Te-PsS, Au@Te-PsS and Rh@Te-PsS catalysts for HER. The obtained products showed excellent HER activity and stability, which achieves the highly efficient utilization of precious metals and provides an interesting method to lower their content in energy field. In this communication, the urchin-like Te template is obtained by photo-assisted electro-deposition to replace trace platinum, gold and rhodium to obtain the Pt@Te-PsS, Au@Te-PsS and Rh@Te-PsS catalysts in pursuit of their highly efficient utilization. The three-dimensional structure of urchin-like Te can not only accelerate the interface charge transfer, but also enhance the structural stability of the catalysts. Moreover, the electrons of Te are delocalized, to increase the electron density of interface and promote the hydrogen evolution reaction. Especially, the Pt@Te-PsS catalyst with the Pt loading of only 1.08 wt % exhibits extremely outstanding electrocatalytic hydrogen evolution reaction activity. The finer hierarchical structure of Te template boosts the high HER performance with low precious metal loading, which highlights a new strategy for development of high-efficiency electrocatalysts.
研究领域:
材料科学
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电化学
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纳米技术
·
催化
✓ 已验证
DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 5
·2729-2735
·
IF 4.036
Jie Zhang,Jiaojiao Liu
In this study, CsPbBr3 particles were prepared by a simple solvent evaporation method in ambient environment; the p–n heterojunction formed by CsPbBr3 particles on the surface of a single long Te wire was used to construct a high-performance Te/CsPbBr3 photodetector. Compared with CsPbBr3 PDs, the Te/CsPbBr3 photodetector showed improved photocurrent, and exhibited characteristics of excellent self-powered performance, broad-spectrum response (UV-visible), and ultra-fast response speed (trise = 0.09 ms). In addition, under zero bias and upon 540 nm light irradiation, the device had good responsivity (0.35 mA W−1), high photosensitivity (up to 100 on/off ratio), and a detectivity of 1.42 × 1010 Jones. This study provides insight into the possibility of manufacturing high-performance self-powered photodetectors through a simple in situ construction of heterojunctions.
研究领域:
材料科学
·
光电子学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Materiomics
·
2022
·
IF 8.589
Xuedi Zhang,Jin Chen,Han Zhang,Pengfei Zhu,Rong Wang,Fu Li,Bo Li
Bi 2 Te 3 -based materials were prepared by direct ink writing (DIW) 3D printing and their microstructure and thermoelectric properties were investigated with an emphasis on the effect of the content of DMF and Te/Se addition. As the mass ratio of DMF in the composition increased from 6.5% to 8.0% (in mass), the electrical conductivity deteriorated because of the corresponding increased porosity and organic remains in the samples. However, the volatilization of DMF would reduce the fluidity of the slurry. Thus, thermoelectric slurry with 7.0% DMF is the most suitable mass ratio for 3D printing. Additionally, adding Te in the p-type Bi 0.4 Sb 1.6 Te 3 and adding Se in the n-type Bi 2 Te 2.6 Se 0.4 have significantly improved their electrical conductivity due to the increased carrier concentration and mobility. Combining with the moderate Seebeck coefficient (∼200 μV/K), high power factors with ∼802 μW·m −1 ·K −2 and 1266 μW·m −1 ·K −2 were obtained for the n-type Bi 2 Te 2.6 Se 0.4 +10%Se and p-type Bi 0.4 Sb 1.6 Te 3 +7%Te, respectively, which result in the final relatively high zT values of 0.68 at 573 K and 0.56 at 330 K for n-type and p-type 3D-printed samples.
研究领域:
材料科学
·
热电技术
✓ 已验证
产品关联
DOI
高影响因子
Analytical Methods
·
2025
·
IF 2.6
Yong-Hai Yuan,Feng Yang,Qiu Zhang,Qinghong Xu,Meilan Wen
This study focuses on comparing the performance of pneumatic nebulization (PN), hydride generation (HG), and photochemical vapor generation (PVG) sampling modes coupled with inductively coupled plasma mass spectrometry (ICP-MS) for the determination of Se and Te in geological samples. ICP-MS operating parameters for each sampling mode, such as RF power, flow rate of collision gas, and sampling depth, were optimized. The introduction efficiency of Se and Te in PN mode was about 4.71% and 4.58% respectively, with the best reproducibility. HG mode had the highest introduction efficiency (57.01% for Se and 53.02% for Te), but the poorest reproducibility. PVG mode showed a good balance between efficiency and reproducibility, with introduction efficiencies of 45.38% for Se and 38.84% for Te, and lower limits of detection (LODs) of 0.001 μg·L-¹ for both Se and Te. Analysis of 14 geological certified reference materials (CRMs) indicated that for samples with Se > 0.1 μg·g-¹ and Te > 0.05 μg·g-¹, both PN and PVG sampling modes can obtain satisfactory results, and PN mode is more convenient. For samples with Se ≤ 0.1 μg·g-¹ and Te ≤ 0.05 μg·g-¹, HG or PVG sampling modes are recommended after enrichment pretreatment. This research provides a more precise and reliable method selection basis for analyzing Se and Te in geological samples at different concentration levels.
研究领域:
分析化学
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地球化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2024
·
IF 5.7
Junnan Wang,Zeyu Wang,Nikolai V. Gaponenko,Jindou Shi,Zheyuan Da,Chen Zhang,Yongqiang Ji,Qing Yao,Youlong Xu,Minqiang Wang
X-ray imaging technology has been integral to numerous aspects of people's lives since its inception. With the growing demand for advanced imaging technologies, lead-free metal halide perovskites have received significant attention due to their non-toxicity, stability, and excellent optical properties. This paper investigates the scintillation behaviour of a Te doped Cs2SnCl6 scintillator composite film (CF) prepared through an innovative in situ growth strategy. This approach achieves the direct growth of Cs2SnCl6:Te micro-crystals within polymethyl methacrylate (PMMA), mitigating the issues of optical property degradation and inhomogeneous distribution that are inevitable in a conventional two-step mixing method. By controllable optimization of the doping ratio of Te, the Cs2SnCl6:Te/PMMA CFs exhibited exceptional scintillation properties under X-ray irradiation, with the detection limit reaching up to 112 nGyairs−1. In X-ray imaging applications, the Cs2SnCl6:Te 15%/PMMA CF demonstrated advanced sensitivity, producing high-resolution structural images of the target object. This advancement highlights the promising potential of lead-free metal halide perovskites in the development and application of X-ray imaging technology.
研究领域:
材料科学
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医学影像
·
光学
✓ 已验证
产品关联
DOI
高影响因子
Materials Express
·
2020
·Vol. 10
·期 12
·2143-2148
·
IF 1.65
Gao Yuan,Peng Zehui,Lin Zixia,Song Haizeng,Yan Shancheng
With the increasing dependence of production and life on energy, low-cost and clean renewable energy has gradually become an attractive area for researchers. Considering that CoTe2 has metal conductivity, it can carry out more efficient electronic transport, that will significantly
improve the catalytic performance. We prepared CoTe2/Te composite with regular morphology by one-step hydrothermal method. It showed good catalytic performance in 1 M KOH alkaline solution with the overpotential of 168 mV. We believe that the prepared CoTe2/Te composite
can play an important role in the production of hydrogen in an alkaline environment.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-10
·
IF 14.7
Zhou Jun,Zhang Guitao,Wang Wenhui,Chen Qian,Zhao Weiwei,Liu Hongwei,Zhao Bei,Ni Zhenhua,Lu Junpeng
Multiple structural phases of tellurium (Te) have opened up various opportunities for the development of two-dimensional (2D) electronics and optoelectronics. However, the phase-engineered synthesis of 2D Te at the atomic level remains a substantial challenge. Herein, we design an atomic cluster density and interface-guided multiple control strategy for phase- and thickness-controlled synthesis of α -Te nanosheets and β -Te nanoribbons (from monolayer to tens of μm) on WS 2 substrates. As the thickness decreases, the α -Te nanosheets exhibit a transition from metallic to n-type semiconducting properties. On the other hand, the β -Te nanoribbons remain p-type semiconductors with an ON-state current density (I ON ) up to ~ 1527 μA μm −1 and a mobility as high as ~ 690.7 cm 2 V −1 s −1 at room temperature. Both Te phases exhibit good air stability after several months. Furthermore, short-channel (down to 46 nm) β -Te nanoribbon transistors exhibit remarkable electrical properties (I ON = ~ 1270 μA μm −1 and ON-state resistance down to 0.63 kΩ μm) at V ds = 1 V.
研究领域:
材料科学
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纳米技术
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电子学
·
光电子学
✓ 已验证
DOI
高影响因子
Materials Today Energy
·
2022
·
IF 9.257
Changqing Tian,Qiang Huang,Daofu Wu,Junan Lai,Fei Qi,Nan Zhang,Wenxia Zhang,Xiaosheng Tang
The lead halide perovskites have broad application prospects in the fields of optoelectronics and photocatalysis . However, their toxicity and limited stability are the main obstacles restricting their large-scale photocatalytic applications. In order to solve these problems, a set of lead-free stable Cs 2 XCl 6 (X = Hf, Zr, Te) perovskite microcrystals were synthesized via a solvothermal solution. For the first time, the Cs 2 XCl 6 (X = Hf, Zr, Te) perovskite microcrystals were employed as efficient photocatalysts for the conversion of CO 2 into CO and CH 4 . Among them, the Cs 2 TeCl 6 microcrystals showed the best photocatalytic performance under light irradiation for 3 h, while the yields of CO and CH 4 were 284.4 μmol/g and 48.96 μmol/g respectively. Our strategy may provide a new idea for the CO 2 photoreduction based on lead-free halide perovskites.
研究领域:
材料科学
·
光催化
·
环境科学
✓ 已验证
DOI
高影响因子
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
·
2023
·Vol. 220
·期 5
·2200612
·
IF 2
Shuzuo Liu,Dongmei Yang,Yuxin Ren,Jiaming Song,Peng Hu,Yang Jiao,Haibo Fan,Feng Teng
Self-powered and flexible photodetectors exhibit great potential in the application of optical communication, deep space exploration, and other related fields. Herein, a self-powered ultraviolet photodetector based on ZnO nanowires/Te nanowires heterojunction has been prepared by two-step vacuum filtration method, which also has superior flexibility and fast response speed. The obtained photodetector has a high photocurrent (about 1 μA) at 5 V bias under 365 nm UV light illumination and a fast response speed (3.47/0.13 s). Even if the bending angle reaches 90°, its photocurrent still maintains about 0.5 μA under 5 V bias, showing superior flexibility. Under 0 V bias, the photocurrent of the photodetector is 0.18 nA and the response time is 65/140 ms, displaying its good self-powered characteristic and fast response speed. These superior properties are caused by the flexibility of ZnO nanowire film and Te nanowire film, and the heterojunction is formed between ZnO and Te. The obtained results provide a solid foundation for the further development of flexible optoelectronic devices based on ZnO nanostructures.
研究领域:
材料科学
·
光电技术
·
纳米科技
✓ 已验证
产品关联
DOI
高影响因子
Canadian Journal of Chemistry
·
2020
·Vol. 98
·期 12
·
IF 1.171
Aili Liu,Xinnan Mao,Zhoumin Xiao,Huile Jin,Liyun Chen,Shun Wang,Weizhong Jiang
The development of multi-component photothermal agents has attracted increasing attention due to their potential applications in energy conversion, medical treatments, etc. Herein, a dumbbell shaped PbS–Te heterostructure was prepared via a one-pot microwave-assisted decomposition of lead dimethyl dithiocarbamate and tellurium diethyl dithiocarbamate. The as-obtained PbS–Te hybrids exhibit excellent photothermal stability and strong optical absorption over a broad wavelength range spanning from ultraviolet to near-infrared, where the photothermal conversion efficiency could reach as high as 12.1%. Such promising photothermal performance demonstrates the advantages of one-pot synthesis that results in more intimate contacts among individual components.
研究领域:
材料科学
·
纳米技术
·
能源转换
·
生物医学工程
✓ 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）