Article
Materials Science, Multidisciplinary
L'ubos Podlucky, Andrej Vincze, Sona Kovacova, Juraj Chlpik, Jaroslav Kovac, Frantisek Uherek
Summary: This paper presents the analysis of SiON films deposited on silicon wafers for optical waveguides using the PECVD process, focusing on the impact of N2O flow rate. Various film properties were studied using different instruments, showing that increasing N2O flow rate led to a decrease in refractive index and an increase in deposition rate. By adjusting the gas flow rate during PECVD, the oxygen and nitrogen ratio in the SiON film could be controlled to tailor its optical properties for waveguide applications.
Article
Energy & Fuels
Wenhao Chen, Josua Stuckelberger, Wenjie Wang, Sieu Pheng Phang, Daniel Macdonald, Yimao Wan, Di Yan
Summary: The research shows that gas flow ratio has a significant impact on the properties of SiOxNy layers and polysilicon passivating contact structures. An optimal N2O:SiH4:N-2 gas flow ratio can result in uniform polysilicon passivating contacts with high open-circuit voltage and low contact resistivity.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Materials Science, Multidisciplinary
Liangyi Hang, Weiguo Liu, Xu Zhang, Shun Zhou, Junqi Xu, Cheng Li
Summary: A simple-operation method for designing antireflection coatings (ARCs) based on tailored refractive index characteristics of thin-film materials was developed. High-transmittance, broadband ARCs with specific refractive indices and transmittances were designed and characterized. The sensitivity of the ARCs system to manufacturing errors was simulated. The results provide valuable insights for the preparation of optical films formed via PECVD.
Article
Computer Science, Information Systems
Andrei A. Gismatulin, Gennadiy N. Kamaev, Vladimir A. Volodin, Vladimir A. Gritsenko
Summary: A silicon oxynitride-based memristor was fabricated using the PECVD method, and its charge transport mechanism can be described by the space charge limited current model.
Article
Chemistry, Physical
Yu-Chen Deng, Nan-Long Zhang, Qiang Zhi, Bo Wang, Jian-Feng Yang
Summary: Dense SiC ceramics were fabricated using SiC nanoarrays as crystal seeds in a HTPVT growth process, achieving high density, large grain size, high hardness, high flexural strength, and good thermal conductivity.
Article
Energy & Fuels
Audrey Morisset, Raphael Cabal, Valentin Giglia, Adrien Boulineau, Eric De Vito, Amal Chabli, Sebastien Dubois, Jose Alvarez, Jean-Paul Kleider
Summary: By depositing a B-rich dielectric layer and annealing it, an excellent surface passivation has been achieved with the externally doped poly-Si(B) contact, showing good quality. Gradual filling of the poly-Si layer with active B dopants with increasing annealing temperature strengthens field-effect passivation and increases open-circuit voltage after annealing to 800 degrees C.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Multidisciplinary Sciences
Ang Li, Yeshaiahu Fainman
Summary: In this study, an ultra-compact single-shot spectrometer on silicon platform is presented for sparse spectrum reconstruction. It consists of 32 stratified waveguide filters with diverse transmission spectra for sampling the unknown spectrum of the input signal. The fabricated spectrometer demonstrates broad operating bandwidth and narrowband peaks that can be clearly resolved. Compact spectrometers with simple design can enable various applications in optical spectral bands.
NATURE COMMUNICATIONS
(2021)
Article
Optics
Li-Yang Sunny Chang, Steve Pappert, Paul K. L. Yu
Summary: The thermo-optic coefficient (TOC) of silicon-rich amorphous silicon carbide (a-SiC) thin film deposited by plasma-enhanced chemical vapor deposition (PECVD) was characterized in this work. It was found that the TOC increases with the silicon content of the film. The TOC showed a more than threefold improvement, reaching a value as high as 1.88 x 10-4 degrees C-1, comparable to crystalline silicon. An efficient thermo-optic phase shifter was demonstrated by integrating the silicon-rich a-SiC micro-ring structure with a NiCr heater, achieving a tunability of 0.117 nm/mW and a tuning efficiency P pi as low as 4.2 mW at an optical wavelength of 1550 nm. These findings suggest silicon-rich a-SiC as a promising material for thermo-optic applications in photonic integrated circuits.
Article
Optics
Jingjing Zhang, Xiaodong Shi, Zhaojian Zhang, Chao Ma, Xuefeng Chen, Liping Liu, Xiaoxian Song, Haiting Zhang, Yu Yu, Haiyan Ou, Kai Guo, Junbo Yang
Summary: In this study, we designed an efficient polarization-insensitive ultra-short MMI-based waveguide taper, which utilizes the mode spreading principle and the self-image principle to achieve high transmission efficiency and a wide bandwidth. Experimental results showed that the proposed taper has a transmission efficiency of approximately 70% and a bandwidth of over 54 nm for both TE and TM polarizations.
Article
Chemistry, Physical
Nikolett Hegedus, Csaba Balazsi, Tamas Kolonits, Daniel Olasz, Gyorgy Safran, Miklos Serenyi, Katalin Balazsi
Summary: In this study, an amorphous silicon oxynitride layer was grown in a single process run, and its optical properties, thickness, and elemental composition were characterized. It was found that the refractive index of the layer can be tuned by varying the oxygen partial pressure. By considering the metallic Si target as an oxygen gas-sputtered SiN target and applying the Berg model, the typical physical parameters of the process were determined.
Article
Optics
Jay W. Reddy, Sarah Nelson, Maysamreza Chamanzar
Summary: We demonstrate novel stratified trench optical waveguide designs that feature low-loss confinement of optical modes in thin film layers. The design uses geometrical bends in the core to enable two-dimensional confinement of light without changing the core thickness. This design eliminates the need for etching and reduces scattering loss, exhibiting low intrinsic leakage loss.
Review
Materials Science, Ceramics
Jagannath Panigrahi, Vamsi K. Komarala
Summary: Amorphous/crystalline silicon heterojunction (SHJ) solar cells are known for their high VOC potential, good bifaciality, simple fabrication process, and low thermal-budget manufacturing. Despite their high efficiency, achieving exceptional passivation and efficiency remains a challenge for researchers.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Ceramics
Hidetoshi Miyazaki, Kazuki Eguchi, Mako Tsuruda
Summary: Si2N2O with high radiative cooling ability was mixed with ordinary Portland cement to prepare cement specimens with radiative cooling abilities. Different diameter and thickness cement specimens were prepared with 2% and 10% Si2N2O powder. The temperatures of the blank specimen and the cement composite specimens were measured, and the radiative cooling abilities were evaluated. The results showed a radiative cooling ability ranging from 0.077 to 0.92 W/m(2), suggesting the possibility of a cement composite with passive cooling property.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Chemistry, Physical
Alexander Uvarov, Alexander S. Gudovskikh, Artem Baranov, Alina A. Maksimova, Dmitriy A. Kudryashov, Ekaterina A. Vyacheslavova, George E. Yakovlev, Vasily Zubkov
Summary: This study demonstrates the feasibility of creating an upper junction of multijunction III-V/Si solar cells using GaP/Si superlattices grown at temperatures not exceeding 400°C with a combination of PEALD and PECVD technologies. The results show that GaP/Si superlattices can enhance the spectral sensitivity of the upper junction in double-junction III-V/Si systems.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Energy & Fuels
Junkang Wang, Monalisa Ghosh, Karim Ouaras, Dmitri Daineka, Pavel Bulkin, Pere Roca i Cabarrocas, Sergej Filonovich, Jose Alvarez, Erik Johnson
Summary: We propose a new method for fabricating passivated interdigitated back contact (IBC) crystalline silicon solar cells by using a maskless, patterned plasma etching step. The process involves selectively lighting an etching plasma within slits in the patterned powered electrode, and the critical step of removing the damaged layer formed on the surface after the patterned etching. Through characterization and optimization at each step, it is shown that the IBC-HJT solar cells exhibit significantly improved performance using this maskless plasma patterning process.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Materials Science, Coatings & Films
Jurriaan Schmitz
SURFACE & COATINGS TECHNOLOGY
(2018)
Article
Materials Science, Multidisciplinary
Mengdi Yang, Antonius A. I. Aarnink, Jurriaan Schmitz, Alexey Y. Kovalgin
Article
Engineering, Electrical & Electronic
Vidhu Puliyankot, Giulia Piccolo, Raymond J. E. Hueting, Jurriaan Schmitz
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2018)
Article
Physics, Applied
Gaurav Gupta, Sourish Banerjee, Satadal Dutta, Antonius A. I. Aarnink, Jurriaan Schmitz, Alexey Y. Kovalgin, Raymond J. E. Hueting
JOURNAL OF APPLIED PHYSICS
(2018)
Article
Engineering, Electrical & Electronic
Maurits J. de Jong, Cora Salm, Jurriaan Schmitz
MICROELECTRONICS RELIABILITY
(2018)
Article
Materials Science, Multidisciplinary
Arnoud J. Onnink, Jurriaan Schmit, Alexey Y. Kovalgin
Article
Engineering, Electrical & Electronic
Maurits J. de Jong, Cora Salm, Jurriaan Schmitz
MICROELECTRONICS RELIABILITY
(2019)
Article
Engineering, Electrical & Electronic
Milou van Rijnbach, Raymond J. E. Hueting, Maciej Stodolny, Gaby Janssen, Jimmy Melskens, Jurriaan Schmitz
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2020)
Article
Engineering, Manufacturing
Kees van der Zouw, Antonius A. I. Aarnink, Jurriaan Schmitz, Alexey Y. Kovalgin
IEEE TRANSACTIONS ON SEMICONDUCTOR MANUFACTURING
(2020)
Article
Engineering, Electrical & Electronic
Matthias L. Vermeer, Raymond J. E. Hueting, Luca Pirro, Jan Hoentschel, Jurriaan Schmitz
Summary: Quantification of interface traps in double-gate fully depleted silicon-on-insulator transistors is crucial for accurate device modeling and technology development. A new method combining the g(m)/I-D method and a revised form of the k-sweep method was developed in this study, resulting in a typical trap density of 2*10^(11)cm^(-2)eV^(-1). However, the allocation of traps to the front or back interface is challenging, with at least a 20% error reported.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2021)
Review
Green & Sustainable Science & Technology
Pelin Yilmaz, Jurriaan Schmitz, Mirjam Theelen
Summary: This review paper provides an overview of studies on Potential Induced Degradation (PID) in copper indium gallium diselenide (CIGS) photovoltaics, including observations, proposed origins, testing methods, and preventive measures. Studies on cells, minimodules, and modules are presented and compared.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Review
Green & Sustainable Science & Technology
M. Aghaei, A. Fairbrother, A. Gok, S. Ahmad, S. Kazim, K. Lobato, G. Oreski, A. Reinders, J. Schmitz, M. Theelen, P. Yilmaz, J. Kettle
Summary: This article reviews the latest knowledge on the reliability of PV modules, including reliability metrics, stress factors, degradation, and failure modes. By analyzing the degradation and failure phenomena, strategies can be developed to improve the operational lifetime of PV systems and reduce the cost of electricity.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Review
Energy & Fuels
Bas van Wijngaarden, Junchun Yang, Jurriaan Schmitz
Summary: This paper reviews literature published from 2017 to 2021 on the Cox-Strack method for contact resistivity determination in photovoltaic cell engineering. It analyzes possible inaccuracies in the method and suggests that more than half of the reviewed articles may require additional analysis for accurate quantification of lower contact resistance values. The paper concludes with recommendations for improving the Cox-Strack methodology.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Emre Ozturk, Mike J. Dikkers, Kevin M. Batenburg, Cora Salm, Jurriaan Schmitz
2019 IEEE INTERNATIONAL INTEGRATED RELIABILITY WORKSHOP (IIRW)
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
Kees van der Zouw, Antonius A. I. Aarnink, Jurriaan Schmitz, Alexey Y. Kovalgin
2019 IEEE 32ND INTERNATIONAL CONFERENCE ON MICROELECTRONIC TEST STRUCTURES (ICMTS)
(2019)
Article
Materials Science, Coatings & Films
Yanchun Xie, Xiaodong Wang, Shenshen Cui, Jiali Hu, Yongcun Wei, Yi Lian, Anwu Xuan, Bin Yu, Erlin Zhang
Summary: In this study, Ti-xFe (x = 3,5,9 wt%) alloys were surface modified by micro-arc oxidation (MAO) to improve their antimicrobial properties and biocompatibility. The results showed that increasing the oxidation voltage greatly enhanced the roughness and hydrophilicity of Ti-xFe-MAO alloys. The Ti-xFe alloys micro-arc oxidized at 250 V and 300 V exhibited improved corrosion resistance and excellent antimicrobial and cytocompatibility properties, making them suitable for orthopedic implant materials.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Yuting Hao, Zuoyan Ye, Lili Wang, Minheng Ye, Hui Dong, Chao Wang, Yunchen Du
Summary: This study focuses on the modification of PEO coatings on Ta-12W alloy using NH4F additive. The results show that ultra-low porosity coatings can be prepared by optimizing the NH4F content. The formation process of specific structures on the coating surface is discussed, and the effects of NH4F concentration and treatment duration on coating characteristics are investigated.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Yuanzhuo Liu, Linjiang Chai, Tao Yang, Chaodan Hu, Chuanmei Wang, Guoqiang Xi
Summary: By employing a pulsed laser, laser cladding was performed on IN718 alloy pre-coated with CrCoNi-TiC/SiC powders and three defect-free coatings were successfully prepared. The addition of TiC and SiC powders generated fine carbides dispersed in the coatings and led to changes in grain and substructure morphologies, resulting in increased hardness and wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
M. Ghaemi, A. Lopez-Cazalilla, K. Sarakinos, G. J. Rosaz, C. P. A. Carlos, S. Leith, S. Calatroni, M. Himmerlich, F. Djurabekova
Summary: The use of high-power impulse magnetron sputtering can result in dense and uniform niobium films on all surfaces of superconducting rf cavities, as simulated and investigated in this study.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Jiaheng Du, Xinli Fan, Dongqin Xiao, Wuxiang Wang, Yiran Yin, Zhong Li, Kui He, Yanfei Tan, Jiyuan Yan, Gangli Liu, Ke Duan
Summary: This study investigated the electrophoretic deposition (EPD) of magnesium oxide (MgO) coatings on micro-arc oxidized titanium (MAO-Ti) and evaluated their in vitro antibacterial properties and biocompatibility. The results showed that MgO coatings significantly reduced bacterial numbers and biofilm formation, while also demonstrating good cytocompatibility and induction of osteoblast mineralization.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Samiksha Moharana, Yuichi Otsuka, R. Gnanamoorthy
Summary: The addition of titania to HAp coatings improves their wear resistance and reduces damage to titanium implants caused by debris generation. This study evaluates the fretting wear resistance of titania-added HAp suspension plasma spray coating and finds that it exhibits reduced friction coefficient and increased wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Li-Ping Wu
Summary: The functional hazenite coating deposited on AZ31 Mg alloy showed improved roughness and hydrophilicity, enhanced biocompatibility, reduced degradation rate, and decreased susceptibility to stress corrosion cracking.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Ning Tian, Delei Xu, Jinfei Wei, Bucheng Li, Junping Zhang
Summary: This study reports the preparation of a superhydrophobic and anti-bacterial fabric for face masks. The fabric exhibits high superhydrophobicity and excellent moisture resistance, enabling functionality effectiveness in cold weather conditions. The fabric also demonstrates remarkable anti-bacterial activity against E. coli, attributed to the synergistic effect of superhydrophobicity and embedded ZnO nanoparticles. This superhydrophobic anti-bacterial fabric holds great potential for various practical applications in personal protective equipment, healthcare, and disease prevention.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Katharina Beck, Anke S. Ulrich, Andreas K. Czerny, Emma M. H. White, Martin Heilmaier, Mathias C. Galetz
Summary: Refractory metal based alloys have great potential as structural materials for high-temperature applications due to their high melting points. However, they are prone to catastrophic oxidation at around 700 degrees C. This study investigated the effect of aluminium diffusion coatings on the oxidation resistance of pure molybdenum, niobium, tantalum, and tungsten. The results showed that the aluminization improved the oxidation behavior and decreased the oxide growth rate for molybdenum and tantalum.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Wenwen Shuai, Haijun Dou, Zhichen Guan, Wei Qian, Zhibao Li, Yinqun Hua, Jie Cai
Summary: This study synthesized (Y1-xLax)3Al5O12 (x = 0, 0.1, 0.2, 0.3) materials by doping lanthanum ions, and found that the doped materials exhibited improved mechanical properties and thermal expansion coefficient, as well as enhanced resistance to CMAS corrosion. These materials have potential applications.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Xianglei Liu, Jiahui Ding, Wanbo Hou, Xinhao Shi, Tao Feng, Xiangyuan Meng, Shifeng Wen, Mingde Tong, Zhufeng Yue
Summary: A composite coating was developed to improve the adhesion, wear resistance, and corrosion resistance, which exhibited significant enhancements in these properties.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Hongxuan Xing, Jidong Li, Xianwei Hu, Liang Tian, Renyun Zhang, Yiyong Wang
Summary: By depositing a Cu/Co-Mo corrosion-resistant plating layer on the surface of 6061 Al alloy, the bonding strength between the alloy and the plating layer can be improved and the corrosion resistance can be enhanced. The composite coating forms an obvious three-layer structure with Co-Mo coating exhibiting amorphous characteristics and Co3Mo phase composition. The composite coating improves the corrosion resistance and hardness of the substrate, effectively protecting the 6061 Al alloy.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Fan Yang, Debin Wang, Tianrun Li, Baijun Yang, Suode Zhang, Jianqiang Wang
Summary: The impact-corrosion behavior of monolayer and hierarchical Fe-based amorphous coatings fabricated by HVAF was investigated in 3.5 wt% NaCl solution. The monolayer coating exhibits corrosion failure with increased impact energy, while the hierarchical coating shows improved resistance. However, at high impact energies, both coatings experience corrosion degradation.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Shoaib Ahmad, Muddasir Nawaz, Solaiman Mohammad, R. A. Shakoor, Ramazan Kahraman, Talal Mohammed Al Tahtamouni
Summary: This research presents a novel self-healing anti-corrosion composite coating that demonstrates higher inhibition efficiency and self-healing effect, providing protection for metallic structures against corrosive environments.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Hui-Wen Peng, Chun-Hway Hsueh
Summary: A series of (CoCrNi)100-x-ySixNdy medium entropy alloy films with manipulated metalloid element, Si, and rare earth element, Nd, were synthesized using magnetron three-target co-sputtering. The films showed different structures and mechanical properties with varying Si and Nd contents. The optimized mechanical properties were observed in the film with Si0.61Nd5.14, attributed to precipitation strengthening and grain refinement.
SURFACE & COATINGS TECHNOLOGY
(2024)