Article
Materials Science, Multidisciplinary
Zhaoyang Li, Jiwen Li, Jinkun Lei, Mei Xiong, Nannan Wang, Shengkang Zhang
Summary: This study investigated the effects of Al and Mo doping on ZnO transparent conductive films, revealing that Mo doping can improve carrier concentration and conductivity but deteriorate optical properties. Co-doping with Al and Mo can result in MAZO thin films with both high transparency and high conductivity.
Article
Physics, Multidisciplinary
Sifan Zhang, Jin Li, Zhentao Fu, Jiao Deng, Guolin Hao, Chaoyu He, Tao Ouyang, Chao Tang, Jianxin Zhong
Summary: This study investigates the effects of co-doping with As-Ge (Si) on the electronic, magnetic, and optical properties of monolayer MoS2 using first-principle calculations. The results demonstrate that the magnetic properties of MoS2 can be effectively tuned by the distance between co-doped atoms, and the interaction and superexchange coupling between As and Ge (Si) atoms play a key role. Furthermore, co-doping induces spin-polarized optical properties in the low-energy region, making co-doped MoS2 a promising candidate for spin-polarized photoelectric device applications.
NEW JOURNAL OF PHYSICS
(2023)
Article
Materials Science, Ceramics
H. Y. Hong, D. H. Kim, K. Park
Summary: In this study, the thermoelectric properties of Bi0.97Na0.03CuSeO were systematically investigated by doping Mg2+ ions. The Mg2+ doping significantly enhanced the electrical conductivity by increasing hole concentration and reducing phonon thermal conductivity. By improving the thermoelectric power factor and reducing the thermal conductivity, the thermoelectric performance of Bi0.97Na0.03CuSeO was significantly improved.
CERAMICS INTERNATIONAL
(2022)
Article
Biochemistry & Molecular Biology
M. Junaid Iqbal Khan, Juan Liu, Abid Latif, Iqra Majeed, Hamid Ullah, Mazia Asghar, Javed Ahmad
Summary: In this study, first-principle calculations were used to investigate the properties of cobalt and Co-X (X = Fe, Mn) co-doped MoS2. The results showed that doping with Co and Co-Fe/Mn introduced magnetism into MoS2, resulting in a reduction in optical band gap. The enhanced absorption and conductivity, as well as decreased reflectivity, indicate the potential uses of these materials in optoelectronics, spintronics, magneto-optics, and photonics devices. The crossroads of MoS2 and allied materials may also explore new avenues in sensing, artificial intelligence, and miniaturization of existing technology.
JOURNAL OF MOLECULAR MODELING
(2022)
Article
Materials Science, Multidisciplinary
Chutimun Krataitong, Kitima Srichai, Auttasit Tubtimtae
Summary: The undoped and antimony-doped lead telluride thin films were deposited on borosilicate and FTO glass substrates using spray pyrolysis method. XRD patterns showed that both PbTe and PbTe:Sb films had cubic structures on both substrates. Antimony doping led to a decrease in lattice constant and crystallite size, while increasing the optical band gap values of Eg(onset) and Eg(di).
Article
Chemistry, Physical
M. Buryi, V Babin, V Laguta, Y. Yokota, H. Sato, A. Yoshikawa, J. Pejchal, M. Nikl
Summary: Single crystals of LiCaAlF6, both undoped and doped with Eu and Na, were studied using electron paramagnetic resonance, radioluminescence, and thermally stimulated luminescence techniques. The undoped samples exposed to X-ray irradiation exhibited two hole-like charge trapping centers, while annealing in air caused the appearance of a new electron-like defect. The presence of Eu and Na dopants affected the defects distribution and incorporation in the LiCaAlF6 host, which could contribute to decreased light yield and timing characteristics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Inorganic & Nuclear
Kamlesh Chandekar, Mohd Shkir, Baskaran Palanivel, Zubair Ahmad, H. Algarni, S. AlFaify
Summary: This article discusses the structural, vibrational, optical, dielectric, and electrical properties of undoped and Pr:PbS nanoparticles, finding them suitable for optoelectronic devices. Experimental results showed the different characteristics of Pr:PbS NPs with various doping levels, including structural parameters, optical band gaps, and dielectric constants.
SOLID STATE SCIENCES
(2021)
Article
Chemistry, Multidisciplinary
P. C. Okoye, S. O. Azi, T. F. Qahtan, T. O. Owolabi, T. A. Saleh
Summary: Copper(II) oxide (CuO) and copper(I) oxide (Cu2O) nanoparticles have been widely studied. The synthesis methods used affect the sizes, morphologies, and shapes of the nanomaterials. CuO nanoparticles exhibit excellent antibacterial, antioxidant, and dye degradation photocatalytic capabilities. Cu2O films with a bandgap of 2.34 eV are suitable for solar cell applications and can be used as a substrate layer for semiconductor thin films.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Physical
D. H. Kim, H. Y. Hong, K. Park
Summary: By co-doping with Ca2+ and Ba2+, the electrical conductivity of BiCuSeO is significantly increased while the phonon thermal conductivity is reduced. This combination leads to a significant improvement in thermoelectric performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
N. M. A. Hadia, Mathir Aljudai, Meshal Alzaid, S. H. Mohamed, W. S. Mohamed
Summary: This study focused on the synthesis and characterizations of undoped and Cu-doped ZnO nanowires (NWs) using the vapor transport method. The results showed that Cu doping affected the morphology and optical properties of the NWs, increased sensitivity to NO2 gas, and induced ferromagnetic behavior at room temperature.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Inorganic & Nuclear
Esther Jeyanthi, J. Gajendiran, C. Karnan, N. Kanagathara, R. Siddheswaran
Summary: Undoped BiFeO3 and Ni-doped BiFeO3 nanostructures were synthesized via colloidal gel, showing different crystal structures. Ni-doped BiFeO3 exhibited a reduced energy band gap and improved properties in terms of magnetization and polarization.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Chang Shen, Ye Zhao, Xinran Ji, Shijun Dong, Hui Zheng, Ji Hu, Liang Zheng
Summary: In this study, the electromagnetic properties of NiCuZn ferrite were improved and the sintering temperature was reduced by co-doping Bi2O3 and Co2O3. The effect of Co2O3 doping concentration on the microstructure and magnetic properties of NiCuZn ferrite was investigated. The results showed that high density and uniform microstructure of NiCuZn ferrite were achieved at a low sintering temperature of 925 degrees C. Co2O3 doping in the octahedral B-sites reduced lattice constant and grain size, leading to improved resistivity and enhanced saturation magnetization, coercivity, permeability, and cut-off frequency. Therefore, NiCuZn ferrite doped with 0.30 wt% Bi2O3 and 0.4 wt% Co2O3 exhibited a saturation magnetization of approximately 60.014 emu/g, coercivity of approximately 0.033 kA/m, real part of permeability of approximately 269.9 @ 1 MHz, and high cut-off frequency of 8.08 MHz, making it suitable for multi-layer chip inductors.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Nanoscience & Nanotechnology
Meilan Pan, Xue Zhang, Chenglei Pan, Jiong Wang, Bingjun Pan
Summary: In this study, an accurate and facile hydrothermal strategy was proposed to fabricate the active center of Co-O-Mo on a supported MoS2 catalyst. The electrochemical performances of the yielded catalysts were positively correlated with the Co-O bonds, verifying the significant role of Co-O-Mo as the active center.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Xue Zhang, Ruijuan Qi, Shangwei Dong, Shuai Yang, Chengbin Jing, Lin Sun, Ye Chen, Xuekun Hong, Pingxiong Yang, Fangyu Yue, Junhao Chu
Summary: Doping of La and Co in KNbO3 ceramics leads to a phase transition from orthorhombic to cubic, reducing the optical bandgap and improving leakage while slightly weakening ferroelectric properties. Co doping decreases the bandgap, while La doping has the opposite effect. La doping optimizes defect levels and inhibits leakage.
Article
Chemistry, Physical
Yukun Liu, Pulkita Jain, Iver J. Cleveland, Minh Tran, Seda Sarp, Kajini Sandrakumar, Rafaella Saa Rodriguez, Eray S. Aydil
Summary: This study reports the successful formation of Cs2AgInCl6 thin films through reactive physical vapor deposition, and doping these films with Yb3+. The spectra of the films show orange and near-infrared emissions at 630 nm and 990 nm, respectively. The Cs2AgInCl6 band gap is determined to be 3 eV based on excitation and absorbance spectra. The study also demonstrates that up to 12% Yb doping and 20% NIR photoluminescence quantum yield can be achieved in the films.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Tsung-Shine Ko, Der-Yuh Lin, You-Chi He, Chen-Chia Kao, Bo-Yuan Hu, Ray-Hua Horng, Fan-Lei Wu, Chih-Hung Wu, Yu-Li Tsai
INTERNATIONAL JOURNAL OF PHOTOENERGY
(2015)
Article
Chemistry, Physical
Tsung-Shine Ko, Sin-Liang Ou, Kuo-Sheng Kao, Tz-Min Yang, Der-Yuh Lin
INTERNATIONAL JOURNAL OF PHOTOENERGY
(2015)
Article
Chemistry, Multidisciplinary
Tsung-Shine Ko, Cheng-Ching Huang, Der-Yuh Lin
APPLIED SCIENCES-BASEL
(2016)
Article
Physics, Applied
Tsung-Shine Ko, Zheng-Wen Chen, Der-Yuh Lin, Joonki Suh, Zheng-Sheng Chen
JAPANESE JOURNAL OF APPLIED PHYSICS
(2017)
Article
Physics, Applied
Tsung-Shine Ko, Yu-Jen Huang, Der-Yuh Lin, Chia-Feng Lin, Bo-Syun Hong, Hone-Zern Chen
JAPANESE JOURNAL OF APPLIED PHYSICS
(2018)
Article
Crystallography
Hung-Pin Hsu, Der-Yuh Lin, Cheng-Ying Lu, Tsung-Shine Ko, Hone-Zern Chen
Article
Chemistry, Physical
Hung-Pin Hsu, Der-Yuh Lin, Jhin-Jhong Jheng, Pin-Cheng Lin, Tsung-Shine Ko
Article
Chemistry, Multidisciplinary
Tsung-Shine Ko, Han-Yuan Liu, Jiann Shieh, De Shieh, Szu-Hung Chen, Yen-Lun Chen, En-Ting Lin
Summary: In this study, Si/MoS2 core/shell nanostructures were fabricated and characterized for SERS, showing significant enhancements in the SERS signal intensity for Rhodamine 6G (R6G) molecules. The larger interfaces provided by Si/MoS2 core/shell NP arrays were suggested to enhance the charge transfer process and exciton transitions, making them effective SERS substrates for biomedical detection.
Article
Chemistry, Multidisciplinary
Tsung-Shine Ko, Yen-Lun Chen
Summary: This study proposes a structure in which MoS2 is decorated with Au NPs on Si NSHs for SERS applications. The results show that the structure exhibits low detection limit and high enhancement factor, making it suitable for biomedical detection.
Article
Chemistry, Multidisciplinary
Tsung-Shine Ko, En-Ting Lin, Xin-Wen Huang, Po-Tang Wu, Yi-Lin Yang
Summary: This study investigates the synthesis and properties of MoxW1-xS2 ternary compound. The results show that MoxW1-xS2 samples have unique Raman spectra and sheet-like surface morphology, making them suitable for thermal sensors.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Physical
Tsung-Shine Ko, Kai-Yuan Kuo
Summary: In this study, a highly efficient SERS substrate was fabricated by growing pitted GaN thin film and covering it with a thin Au layer using metal-organic chemical vapor deposition. The substrate exhibited low detection limit, high enhancement factor, and molecular localization effect, showing potential applications in biomedical detection.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Materials Science, Coatings & Films
Tsung-Shine Ko, Yen-Lun Chen, Jiann Shieh, Szu-Hung Chen, Jing-Yang Syu, Guan-Long Chen
Summary: In this study, Si nanopillar (NP) array was covered with few-layer MoS2 films to change its wettability from hydrophilic to hydrophobic, and it was used as a surface-enhanced Raman scattering (SERS) substrate. The Si NP array was fabricated using a semiconductor process. MoO3 films coated on the Si NP array were sulfurized and transferred to MoS2 films. Scanning electron microscopy and transmission electron microscopy were used to examine the morphology and structure of the MoS2-coated Si NP array. The results showed that the MoS2-coated Si NP array exhibited a hydrophobic surface and showed promising SERS properties through the charge transfer mechanism.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2023)
Article
Chemistry, Physical
Tsung-Shine Ko, En-Ting Lin, Yen-Teng Ho, Chen-An Deng
Summary: In this study, few-layer WS2 films were deposited on GaN and sapphire substrates to form heterojunctions. It was found that using GaN as a substrate effectively enhanced the SERS signal compared to sapphire. The analysis of different techniques revealed that the increased number of transition pathways in the interface between WS2 and GaN contributed to the enhanced SERS signal. The WS2/GaN heterostructure proposed in this study can serve as a reference for enhancing SERS efficiency.
Article
Chemistry, Multidisciplinary
Hsiuan Ling Ho, Jung Yen Yang, Chun Hung Lin, Jiann Shieh, Yu Fang Huang, Yi Hong Ho, Tsung Shine Ko, Chiung Chih Hsu, Kostya (Ken) Ostrikov
Summary: The development of reliable and cost-effective molecular detection at the attomolar level on analyte-immobilizing surfaces without lithographic patterning is a challenge in chemical sensing. This study presents a novel approach using plasma etching to produce custom-designed adhesive superhydrophobic silicon nanograss surfaces. These surfaces enable effective immobilization of Ag nanoparticles and R6G target molecules, providing a reliable Raman scattering platform for detecting trace analytes. The study also introduces a plasma-enabled approach for precise interface nanostructuring, potentially leading to unprecedented capabilities in molecular-level sensing technologies.
ADVANCED MATERIALS INTERFACES
(2023)
