Article
Chemistry, Physical
Daris Fontana, Francesco Sgarbossa, Ruggero Milazzo, Enrico Di Russo, Emmanuele Galluccio, Davide De Salvador, Ray Duffy, Enrico Napolitani
Summary: Ge1-xSnx alloys have promising electrical and optical properties, but one of the challenges in implementing them in devices is the fabrication of n-type heavily doped surface layers. This study investigates a new methodology for ex-situ doping of Ge1-xSnx layers, which involves the deposition of Sb atoms on the surface followed by pulsed laser melting to facilitate diffusion. The results demonstrate efficient incorporation of Sb and provide insights into Sn redistribution and lattice parameter contraction, highlighting the importance of considering these factors for successful process development.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Che-Wen Yu, Hsuan-Wei Fu, Shu-Meng Yang, Yu-Shan Lin, Kuo-Chang Lu
Summary: In this study, zinc-doped indium oxide nanowires with high crystallinity and appropriate morphologies were synthesized and their gas sensing properties were investigated. The electrical resistivity of the nanowires increased after doping with zinc, leading to improved gas sensing performance. X-ray photoelectron spectroscopy analysis confirmed the increased oxygen vacancies due to zinc doping, which enhanced gas molecule adsorption. The doped nanowires exhibited higher response to reducing gases compared to undoped nanowires at low concentrations and temperatures.
Article
Chemistry, Physical
Chao Liu, Roberto Felix, Karen Forberich, Xiaoyan Du, Thomas Heumueller, Gebhard J. Matt, Ening Gu, Jonas Wortmann, Yicheng Zhao, Yuanyuan Cao, Yakun He, Lei Ying, Alina Hauser, Marek F. Oszajca, Benjamin Hartmeier, Michael Rossier, Norman A. Luechinger, Yi-Sheng Liu, Jinghua Guo, Kaiqi Nie, Regan G. Wilks, Julien Bachmann, Marcus Baer, Ning Li, Christoph J. Brabec
Summary: The study aims at improving the interface engineering of organic solar cells by introducing antimony cations, leading to a switch from n-type to p-type conductivity and providing excellent performance compatible with various OSCs systems.
Article
Chemistry, Multidisciplinary
Tariq Aqeel, Vardan Galstyan, Elisabetta Comini, Ali Bumajdad
Summary: This study successfully enhanced the conductivity and sensitivity of tin dioxide to certain gases by synthesizing antimony-containing mesoporous tin dioxide materials, which provides highly conductive oxide nanomaterials for chemical gas sensing devices manufacturing.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Zhilong Song, Zhixiang Hu, Jingyao Liu, Jia Yan, Huaming Li, Jianjun Jiang, Jiang Tang, Huan Liu
Summary: The study introduces a metastable Sb-doping strategy to achieve high sensitivity in SnO2 quantum wires back channels, allowing for rapid and sensitive detection of gases like H2S. Through optimization of doping amounts, structural and morphological properties, fast and sensitive detection of gases is achieved, paving the way for gas sensors with low power consumption and excellent integration compatibility.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Physics, Applied
Kohei Ueno, Yusuke Masuda, Atsushi Kobayashi, Hiroshi Fujioka
Summary: We have successfully demonstrated the homoepitaxial growth of N-polar GaN and its Si doping by pulsed sputtering deposition (PSD). The surface migration was enhanced by a pulsed supply of precursors, allowing step-flow growth even on N-polar GaN bulk substrates with small miscut angles. The heavily Si-doped N-polar GaN film showed a record-low resistivity and high electron mobility, making it promising for future applications like the source/drain of high-performance N-polar GaN HEMTs.
APPLIED PHYSICS EXPRESS
(2023)
Article
Chemistry, Analytical
Zhifu Feng, Andrea Gaiardo, Matteo Valt, Barbara Fabbri, Davide Casotti, Soufiane Krik, Lia Vanzetti, Michele Della Ciana, Simona Fioravanti, Stefano Caramori, Alberto Rota, Vincenzo Guidi
Summary: Tin dioxide (SnO2) is a commonly used semiconductor for gas sensing applications, but its lack of selectivity and sensitivity to humidity limit its potential usage. This study focused on highly doped SnO2:Sb and found that it exhibits high selectivity to NO2 with good sensitivity and limited influence from humidity.
Article
Materials Science, Multidisciplinary
Wafaa Magdy, Ayaka Kanai, Esam T. El Shenawy, Sherif A. Khairy, Hussam H. Hassan, Mutsumi Sugiyama, Fawzy A. Mahmoud
Summary: Adjusting the sulfur content and amount of doping is a promising approach to fabricate high-performance thin film solar cells. This study investigated the effects of sulfur content and Sb doping on the physical and optical properties of Cu2SnS3 (CTS) thin films. The results showed that Sb doping resulted in larger grain size and improved conversion efficiency of the CTS solar cells.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Sofie Vogt, Clemens Petersen, Max Kneiss, Daniel Splith, Thorsten Schultz, Holger von Wenckstern, Norbert Koch, Marius Grundmann
Summary: This study presents the structural and electrical properties of undoped and doped alpha-Ga2O3 thin films grown on m-plane sapphire. An undoped alpha-Ga2O3 buffer layer was introduced to improve crystal quality and stabilize the alpha-phase at lower substrate temperatures. Donor doping with tin and germanium achieved high electron mobilities. Suitable annealing temperature for ohmic Ti/Al/Au layer stacks was identified, while high annealing temperatures deteriorated the electrical properties of the thin films, indicating the need for low temperature contacting procedures for alpha-Ga2O3-based devices.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
Pascal Buettner, Florian Scheler, Dirk Doehler, Maissa K. S. Barr, Michael Bosch, Marcel Rey, Tadahiro Yokosawa, Sandra Hinz, Janina Maultzsch, Erdmann Spiecker, Nicolas Vogel, Ignacio Minguez-Bacho, Julien Bachmann
Summary: This study addresses the issue of morphological rearrangement of Sb2S3 during thermal crystallization by introducing a sacrificial capping layer of ZnO and oxidative treatment of the Sb2S3 surface. The concentric p-i-n heterojunction solar cells fabricated using this approach show a high refractive index contrast and achieve >5% overall solar energy conversion efficiency with a simple light absorber phase of only 35 nm thickness.
Article
Physics, Condensed Matter
Marianna Batkova, F. Stobiecki, B. Szymanski, P. Kuswik
Summary: Thin films of SmB6 were prepared using pulsed laser deposition on various substrates, showing that post-deposition annealing at 600 degrees C can result in high-quality material. However, heating the substrate during deposition leads to higher resistance. The electrical resistance measurements revealed that the resistivity can be described by a two-channel model with activation energy and impurity band effects.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Materials Science, Ceramics
Boxu Shen, Yuanhao Wang, Lin Lu, Hongxing Yang
Summary: The study investigated the influence of the pH titration endpoint on the synthesis and optical performance of antimony-doped tin oxide, revealing that the doping level and optical properties of antimony-doped tin oxide are indeed affected by the pH value.
CERAMICS INTERNATIONAL
(2021)
Article
Electrochemistry
A. Klimova, Z. A. Mikhailovskaya, E. S. Buyanova, S. A. Petrova
Summary: This study examines the possibility of synthesizing oxygen-ion conductors based on bismuth molybdate with antimony and tin substitutions, exploring their structure and properties, as well as conductivity. Characteristic frequencies of metal-oxygen bonds were determined through IR spectroscopy, and the total conductivity of compositions was studied using impedance spectroscopy. The research provides insights into the structure and properties of these materials with substitutions.
RUSSIAN JOURNAL OF ELECTROCHEMISTRY
(2021)
Article
Metallurgy & Metallurgical Engineering
K. G. Gapparov, H. J. Erkaboev, Yu. N. Mansurov, A. A. Aksenov
Summary: The study found that Uzbekistan currently does not produce babbits for filling shells, even though there is a high demand for them. The authors have developed a technology to reuse babbit chips for filling shells, based on composition analysis and structural transformation studies.
Article
Spectroscopy
Meng Zhang, Yanan Wang, Yan Ma, Xu Wang, Bing Zhao, Weidong Ruan
Summary: In this study, a series of antimony-doped tin oxide nanoparticles were synthesized and used as SERS substrates for the first time, revealing a dependence of the SERS enhancement on the doping ratios. The research indicates a connection between the enhancement effect and the variation of optical band gap energy and free charge carrier densities in conduction bands of the nanoparticles. This provides a new perspective for the development of semiconductor-based SERS substrates and contributes to the understanding of the SERS charge transfer mechanism.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Physics, Applied
Dalawan Limthin, Piyawan Leepheng, Korakot Onlaor, Benchapol Tunhoo, Annop Klamchuen, Thutiyaporn Thiwawong, Darinee Phromyothin
Summary: In this study, the selectivity and sensitivity of salbutamol detection were enhanced by modifying a carbon plate electrode with a novel molecularly imprinted polymer (MIP) combined with reduced graphene oxide (RGO). The modified RGO/MIP electrode showed higher sensitivity and selectivity compared to the MIP electrode.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2022)
Article
Energy & Fuels
Tirapote Rattana-Amron, Annop Klamchuen
Summary: During the thermal degradation period, the Kinetic Akahira-Sunose (KAS) method was considered the optimal kinetic approach for studying motor oil oxidation, providing the highest fitting precision. The study revealed multiple reactions at the initial stage of the oxidation process and a sudden decrease in activation energy between conversion extents of 0.1 to 0.2. Further research is needed to better understand the oxidation behavior of motor oil for accurate stability prediction.
PETROLEUM SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Chanthawut Jetjamnong, Sutharat Chotikaprakhan, Rattanachai Kowong, Chanunthorn Chananonnawathorn, Atipong Bootchanont, Tossaporn Lertvanithphol, Saksorn Limwichean, Puchong Kijamnajsuk, Annop Klamchuen, Gang Meng, Anucha Watcharapasorn, Hideki Nakajima, Mati Horprathum
Summary: In this study, NiWO nanorod films were prepared using reactive magnetron co-sputtering with oblique angle deposition. The influence of Ni target sputtering power on the microstructural, morphology, and chemical composition of the films was investigated. Results showed that the sputtering power affected the diameter, length, and tilt angle of the nanorods, while surface roughness increased with increasing Ni sputtering power.
Article
Materials Science, Multidisciplinary
Saksorn Limwichean, Hideki Nakajima, Tossaporn Lertvanithphol, Kittikhun Seawsakul, Chanunthorn Chananonnawathorn, Raju Botta, Pitak Eiamchai, Viyapol Patthanasettakul, Pongpan Chindaudom, Annop Klamchuen, Noppadon Nuntawong, Prayoon Songsiriritthigul, Mati Horprathum
Summary: The study explored the long-term stability of silver nanorods (Ag NRs) for surface-enhanced Raman spectroscopy (SERS) substrates. Ag NRs films were deposited on silicon wafer substrates using magnetron sputtering with the glancing-angle deposition (GLAD) technique. It was found that storing the samples under high vacuum post-deposition suppressed background contamination in SERS spectra, leading to prolonged SERS performance with stable response even under air ambient usage. X-ray photoemission spectroscopy revealed carbon accumulation on Ag NRs film surfaces after high vacuum storage, enhancing SERS performance over three months.
Article
Polymer Science
Dalawan Limthin, Piyawan Leepheng, Annop Klamchuen, Darinee Phromyothin
Summary: Novel molecularly imprinted polymers (MIPs) functionalized with superparamagnetic nanoparticles (SPIONs) were successfully developed for gluten detection. The modified electrode surface morphology was characterized by scanning electron microscopy-energy-dispersive X-ray spectrometry. The performance of the MIP electrode was evaluated using cyclic voltammetry, amperometry, and electrochemical impedance spectroscopy. The MMIP electrode exhibited a dynamic linear range of 5-50 ppm, a detection limit of 1.50 ppm, and excellent selectivity, sensitivity, stability, and reproducibility.
Article
Crystallography
Nguentra Sucheewa, Winadda Wongwiriyapan, Annop Klamchuen, Michiko Obata, Masatsugu Fujishige, Kenji Takeuchi, Tossaporn Lertvanithphol, Tuksadon Wutikhun, Saifon Kullyakool, Wanwalee Auttasiri, Nataporn Sowasod, Theerayut Prataen, Wiwut Tanthapanichakoon, Jiti Nukeaw
Summary: This study successfully demonstrated the tailoring properties of HfN thin films via reactive gas-timing RF magnetron sputtering for SERS substrate applications. The RGT technique can fabricate HfN thin films with controlled properties, such as grain size and chemical composition, resulting in an increase in the hot spot effect.
Article
Engineering, Chemical
Kittidhaj Dhanasiwawong, Kheamrutai Thamaphat, Mati Horprathum, Annop Klamchuen, Apiwat Phetsahai, Pichet Limsuwan
Summary: This study proposed a novel vertical vibration-assisted convective deposition technique for preparing high uniformity, two-dimensional periodic nanostructures of colloidal particles. The influences of vibration amplitude and frequency on the structure of thin colloidal film were investigated. The results showed that vibration amplitude affected film uniformity, while vibration frequency promoted the formation of defect-free hexagonal close-packed nanostructures. Additionally, the self-assembled colloidal particle arrays were employed as a template for fabricating efficient metal-enhanced fluorescence substrates. This method holds great potential for plasmonic sensing platforms.
Article
Chemistry, Physical
Chakkaphan Wattanawikkam, Atipong Bootchanont, Porramain Porjai, Chanthawut Jetjamnong, Rattanachai Kowong, Tossaporn Lertvanithphol, Chanunthorn Chananonnawathorn, Prae Chirawatkul, Narong Chanlek, Hideki Nakajima, Prayoon Songsiriritthigul, Nuanlaor Kiama, Watcharapong Nareejun, Praewnapa Tomkham, Chatchai Ponchio, Sakon Rahong, Annop Klamchuen, Mati Horprathum
Summary: Ni-doped WO3 nanorod films were successfully fabricated using a reactive magnetron cosputtering with a glancing angle deposition technique. The crystal structure, surface morphology, chemical compositions, oxidation state, local structure, and phase evolution of the films were investigated. The coupling of amorphous WO3, crystalline WO3, and amorphous NiWO4 exhibited high photoelectrochemical activity after annealing at 400 ?, suggesting its potential as a promising photoelectrode material.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Panya Thanwisai, Nattha Chaiyapo, Pornjira Phuenhinlad, Yutthanakorn Kanaphan, Jeffrey Nash, Chuleekorn Chotsuwan, Annop Klamchuen, Yan Wang, Thomas Nann, Nonglak Meethong
Summary: Aluminium-ion batteries (AIBs) are a promising alternative to traditional rechargeable battery types, with activated carbon derived from coconut shell chars showing great potential as a cathode material. The study demonstrates that the mesoporosity and defect structures in this low-cost carbon material allow good storage capability for large anion species. This research emphasizes the importance of the porous and defective structures in carbon materials for storing large ion species.
Article
Instruments & Instrumentation
J. Pongkasem, D. Crespy, S. Thaiboonrod, A. Klamchuen, R. Saenmuangchin, K. Mongkolsuttirat, N. Chanthawong, J. Buajarern, J. Samranji
Summary: The purpose of this study was to develop certified reference materials of monodispersed polystyrene particles in accordance with ISO standards. The synthesized particles met the criteria for size deviation and polydispersity index. Stability testing and homogeneity testing were performed to ensure the quality and accuracy of the particles. The resulting certified value of monodispersed polystyrene particles has been successfully developed as Thailand reference materials.
MAPAN-JOURNAL OF METROLOGY SOCIETY OF INDIA
(2022)
Article
Materials Science, Multidisciplinary
Narathon Khemasiri, Annop Klamchuen, Sukittaya Jessadaluk, Prapakorn Rattanawarinchai, Punlapa Borklom, Adirek Rangkasikorn, Sakon Rahong, Chaiyuth Saekung, Mati Horprathum, Chanunthorn Chananonnawathorn, Tuksadon Wutikhun, Jiti Nukeaw, Navaphun Kayunkid
Summary: Transparent electrode (TE) plays a crucial role in optoelectronics, and the surface properties of TE layer greatly affect its electrical performance. This study investigates the morphological properties of laser-ablated aluminum-doped zinc oxide (AZO) films and finds a significant impact of laser fluence on the electrical properties. The optimized AZO film with low resistivity and high optical transmittance achieved from controlling the laser fluence is utilized for electrochromic devices.
Article
Chemistry, Multidisciplinary
Sukittaya Jessadaluk, Narathon Khemasiri, Navaphun Kayunkid, Adirek Rangkasikorn, Supamas Wirunchit, Narin Tammarugwattana, Kitipong Mano, Chanunthorn Chananonnawathorn, Mati Horprathum, Annop Klamchuen, Sakon Rahong, Jiti Nukeaw
Summary: This study investigates the influence of antimony (Sb) species on the electrical properties of Sb-doped zinc oxide (SZO) thin films. The Sb species-related defects were controlled by changing the Sb2O3 content in the ablating target. Increasing the Sb2O3 content led to the dominance of Sb3+ species and a conversion from n-type to p-type conductivity in the SZO films. The substituted Sb species and Sb-Zn complex defects were responsible for the different conductivity types at low and high-level doping.
Article
Chemistry, Multidisciplinary
Yutthanakon Kanaphan, Annop Klamchuen, Voranan Piyavarakorn, Viyada Harnchana, Sutham Srilomsak, Jeffrey Nash, Tuksadon Wutikhun, Alongkot Treetong, Monrudee Liangruksa, Nonglak Meethong
Summary: Silicene has gained increasing attention in recent years due to its unique structure and outstanding anode properties. In this study, researchers successfully fabricated multilayered silicene from end-of-life silicon solar cells and used it as anode material in lithium-ion batteries. The fabricated composite showed good cycling performance and stability, providing a new opportunity for commercial application of silicene and recycling of solar waste.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Pareesa Pormrungruang, Supranee Phanthanawiboon, Sukittaya Jessadaluk, Preeda Larpthavee, Jiraphon Thaosing, Adirek Rangkasikorn, Navaphun Kayunkid, Uraiwan Waiwijit, Mati Horprathum, Annop Klamchuen, Tanapan Pruksamas, Chunya Puttikhunt, Takao Yasui, Mitra Djamal, Sakon Rahong, Jiti Nukeaw
Summary: This study presents the development and evaluation of a Zinc Oxide nanorod (ZnO NR)-surface-integrated microfluidic platform for the early detection of Dengue virus. The ZnO NR substrate demonstrated superior functionalization efficiency and remarkable sensitivity for immunofluorescence detection of DENV-3. This research highlights the potential of ZnO NRs and microfluidic platforms for early disease detection.
Article
Chemistry, Multidisciplinary
Dalawan Limthin, Piyawan Leepheng, Benchapol Tunhoo, Korakot Onlaor, Annop Klamchuen, Darinee Phromyothin, Thutiyaporn Thiwawong
Summary: In this study, enhanced sensitivity and selectivity in the photoelectrochemical determination of melamine were achieved using a combination of copper(ii) oxide (CuO) and a molecularly imprinted polymer (MIP). CuO nanomaterials were synthesized and used for surface modification of the MIP. The modified CuO/MIP electrodes showed high sensitivity and selectivity for melamine detection in a pH 7.4 PBS buffer solution.
