Frontiers in Materials
·
2024
·
IF 2.6
Yu Xianglei,Li Wei,Sun Hu,Qian Zhuo,Li Junpeng,Yu Yang,Gan Guoyou
The Te-based glass powder exhibits distinctive characteristics such as a low melting temperature and high chemical stability, rendering it a focal point of research in the realm of glass powder applications for solar cells. In this investigation, a pioneering Ge-containing Te-based lead-free glass powder was synthesized, and the influence of GeO2 content on critical parameters such as glass transition temperature (Tg), high-temperature fluidity, high-temperature wettability, acid and alkali resistance, as well as the network structure of the glass, was systematically explored. At an optimal GeO2 content of 8%, the glass powder displayed the lowest Tg (437°C), accompanied by a subdued crystallization reaction. The high-temperature fluidity and wettability exhibited favorable characteristics, indicating that the inclusion of GeO2 in the glass powder resulted in an enhanced interface contact. Building upon this foundation, techniques to augment the Ag+ content within the glass powder were investigated, along with the interaction between Ag+ and the SiNx anti-reflection layer or silicon on the surface of crystalline silicon solar cells. It was discerned that the Ag+ content in the glass powder significantly influences the deposition of silver microcrystals on the surface of crystalline silicon, thereby impacting the contact resistance of the solar cell. Then influences the series resistance and photoelectric conversion efficiency of the solar cell.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
BIOMATERIALS
·
2017
·
IF 8.402
Feng Li,Tianyu Li,Wei Cao,Lu Wang,Huaping Xu
Cisplatin (CDDP) has received worldwide approval for clinical use in the past decades. However, its development in cancer chemotherapy was overshadowed by severe side effects and drug resistance. Herein, we developed a CDDP drug delivery system with high encapsulation efficiency and near-infrared light stimuli-responsive drug release properties based on the coordination of novel tellurium-containing block polymer (PEG-PUTe-PEG) and CDDP. The nanocarriers made from PEG-PUTe-PEG were loaded with CDDP and indocyanine green (ICG) simultaneously. The coordination chemistry between CDDP and tellurium guaranteed the nanocarrier a high stability in plasma and prolonged circulation time in vivo by reducing possible penetration of water molecule into the nanoparticles . Under the stimuli of a near-infrared laser, an amount of ROS can be generated by irradiation of ICG. The tellurium is easily oxidized by ROS because of the low electronegativity of tellurium. The CDDP could be rapidly released from the nanocarriers along with the oxidation of the tellurium at the tumor sites as the oxidized tellurium will weaken the coordination interaction with CDDP. In addition, the encapsulated ICG played a synergistic antitumor effect through photothermal effect with mild laser irradiation . The integrated strategy achieved higher antitumor efficacy and showed minimal side effects compared with the CDDP alone.
研究领域:
生物医学工程
·
肿瘤学
·
药剂学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Gen Li,Wei Zeng,Gangji Yi,Xuan Zou,Xize Zhan,Hongmei Zeng,Zhien Lin,Guohong Zou
Oxyhalides are promising candidates for nonlinear optical (NLO) applications due to their unique structural and optical properties. In this study, we report the synthesis of two tellurium-based oxyhalides, Te8O15Cl2 and Te6O11Cl2, which exhibit distinct structural features and exceptional optical performance. Te8O15Cl2 crystallizes in a noncentrosymmetric 2D layered structure, while Te6O11Cl2 adopts a centrosymmetric 1D chain arrangement. Both compounds display wide optical transmission windows (0.30/0.31–25 μm), with Te8O15Cl2 achieving a large second-harmonic generation (SHG) efficiency surpassing conventional materials and a significant birefringence (Δn = 0.185 at 546 nm). The SHG response of Te8O15Cl2 is attributed to the alignment of nonlinear-active units driven by the [TeO3Cl] disphenoid and the stereochemically active lone pairs (SCALPs), facilitated by halogen-mediated structural distortion. These results highlight the potential of halogen modification for the design of advanced NLO materials with enhanced performance.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Shiyi Wang,Yingzi Zhang,Yuxin Yan,Xuehua Dong,Liling Cao,Ling Huang,Guohong Zou
Birefringent crystals are essential in laser modulation, optical communication, and imaging systems. This paper reports two tellurium-based hybrid birefringent crystals─(C12H9N2)2TeBr6·2H2O and (C12H9N2)2TeBr6─composed of Te4+-centered octahedral units and [C12H9N2]+ π-conjugated organic cations. The hydrate converts to the anhydrate via thermal dehydration, a process in which water removal eliminates steric hindrance, promoting a more ordered molecular arrangement. Optical measurements show significantly enhanced birefringence after dehydration. The value at 546 nm increases from 0.17 to 0.31, nearly doubling. These findings highlight the potential of such materials for advanced optical applications that require high birefringence.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 46
·17638-17645
·
IF 8.067
YiLin Mao,Jian Zhang,Qiqiong Ren,Maxim S. Molokeev,Guojun Zhou,Xian-Ming Zhang
Low-dimensional metal halides with ns2 lone-pair electrons have been recognized as new generation luminescent emitters for various optoelectronic applications. However, 5s2 configuration tellurium halides have not received substantial attention despite their fascinating photoluminescence (PL) properties. Here, a hybrid tellurium-based double perovskite of (C20H20P)2TeCl6 is developed, in which the [TeCl6]2− octahedra are completely surrounded by [C20H20P]+ organic cations to form a unique zero-dimensional (0D) “host–guest” structure. An uncommon broadband yellow emission peaking at 570 nm with ultra-broad excitation from ultraviolet to blue light is excavated, which originates from the triplet self-trapped exciton (STE) emission of Te4+. Moreover, the 5s2 electronic transition mechanism of Te4+ is systematically revealed in depth, benefiting from the temperature-dependent fluorescence dynamic analysis and auxiliary theoretical calculations. It is concluded that the distortion degree of the [TeCl6]2− octahedron comprehensively affects the full width at half-maximum (FWHM) (positive correlation), Stokes shift (negative correlation) and PL intensity (negative correlation) with increasing temperatures. This work sheds new light on the PL behaviour of Te4+ and opens up a feasible avenue for blue-excitable broadband emissions in low-dimensional organic–inorganic hybrid double perovskites.
研究领域:
材料科学
·
光电
·
物理化学
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·Vol. 35
·期 50
·e10929
·
IF 19
Yuxin Luo,Huihui Yu,Xiaofu Wei,Juxiu Wen,Haoran Zeng,Yue Zheng,Zheng Zhang,Xiankun Zhang,Yue Zhang
Infrared phototransistors have emerged as critical components in next-generation optoelectronic integrated circuits owing to their ultra-high responsivity. However, the high carrier concentration inherent in narrow-bandgap infrared materials poses significant challenges in suppressing dark current in room-temperature infrared phototransistors. Conventional strategies for reducing dark current, such as constructing heterojunctions, often compromise response speed. Here, a self-biased phototransistor (SBPT) architecture is reported capable of simultaneously achieving ultrahigh responsivity, ultrafast response speed, and ultralow dark current in infrared photodetection. This architecture extends the drain electrode as a series gate and constructs a tunable barrier homojunction using an air gap, which can effectively reduce dark current. Additionally, the introduction of this barrier shortens the transport distance for Te photogenerated electrons near the bottom double electrodes, optimizes carrier transport and collection, and enhances the photoelectric response speed. The built Te-based SBPT demonstrated the 0.6 nA room temperature dark current and the ultrafast response speed of 7.9 µs, both of which surpass previously reported Te-based phototransistors. Moreover, the SBPT detector obtained a sharp edge image at short-wave infrared, and the edge rise rate is 94.26. The SBPT architecture demonstrates cross-material compatibility with diverse semiconductor systems, thereby establishing a proof-of-concept for ultralow-power and high-speed optoelectronic devices.
研究领域:
光电子学
·
半导体器件
·
红外探测
·
纳米电子学
·
集成光子学
✓ 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）