Article
Chemistry, Multidisciplinary
Doowon Lee, Myoungsu Chae, Ibtisam Ahmad, Jong-Ryeol Kim, Hee-Dong Kim
Summary: Antireflection coatings (ARCs) with an additional tungsten trioxide (WO3) layer on silicon heterojunction solar cells (SHJ) have been proposed to increase current density (J(sc)) and enhance efficiency. Simulation and experimental results show that a 20 nm thick WO3 layer can improve J(sc) by 0.75 mA/cm(2) and efficiency by 0.5% in SHJ solar cells, suggesting that WO3 can be a low-cost candidate for improving the efficiency of SHJ solar cells.
Article
Materials Science, Ceramics
Amel Muhson Naji, Sahira Hassan Kareem, Abbas Hasan Faris, Mustafa K. A. Mohammed
Summary: In this study, the efficient strategy of utilizing polyaniline as an additive improved the quality and stability of the perovskite photoactive layer, resulting in optimized crystallinity and reduced trap density. The introduction of polyaniline enhanced the interfacial contact between materials, leading to higher efficiency and stability in the photovoltaic cells. This approach demonstrates the potential for enhanced performance and long-term stability in perovskite solar cells.
CERAMICS INTERNATIONAL
(2021)
Article
Optics
Meili Cui, Jun Ma, Xuemei Wu
Summary: By developing high-quality multilayer SiNx:H films as anti-reflection and passivation coatings, the efficiency of industrial PERC solar cells can be improved. Simulation and experimental results showed that the four-layer SiNx:H film had the best performance, significantly increasing light absorption and short-circuit current density of the cells.
Article
Computer Science, Information Systems
Maruthamuthu Subramanian, Omar M. Aldossary, Manawwer Alam, Mohd Ubaidullah, Sreedevi Gedi, Lakshminarayanan Vaduganathan, Gokul Sidarth Thirunavukkarasu, Elmira Jamei, Mehdi Seyedmahmoudian, Alex Stojcevski, Saad Mekhilef
Summary: This paper explores the impact of anti-reflection coating on the efficiency of silicon solar cells, finding that SiNx and TiO2 as single-layer anti-reflection coating can increase current density, with the highest efficiency of 20.7% achieved with SiNx ARC layer. Double-layer anti-reflection coating can further improve current density, resulting in an enhanced conversion efficiency of 21.1%.
Article
Chemistry, Physical
V. K. Gobinath, R. Rajasekar, S. Santhosh, C. Moganapriya, A. Manju Sri, S. K. Jaganathan
Summary: The study utilized RF sputtering method to prepare ARCs for non-textured polycrystalline Si solar cells, where SrTiO3-BaTiO(3) blend coated cell showed considerable impact on solar cell performance with high power conversion efficiency.
Article
Materials Science, Multidisciplinary
V. K. Gobinath, R. Rajasekar, C. Moganapriya, A. Manju Sri, G. Raja, P. Sathish Kumar, S. K. Jaganathan
Summary: The study focused on using zinc sulphide (ZnS) as Anti-Reflective Coating (ARC) to enhance the power conversion efficiency of solar cells. Optimum performance was observed with S-III coating on polycrystalline silicon solar cells, showing improved electrical characteristics and higher PCE values. Operating temperature on ZnS coated solar cells at different conditions was also investigated, demonstrating the reliability of ZnS as an ARC for enhancing solar cell efficiency.
CHALCOGENIDE LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Xiadong Wang, Wei Wang, Jiale Liu, Jianhang Qi, Yue He, Yifan Wang, Wenjing Hu, Yanjie Cheng, Kai Chen, Yue Hu, Anyi Mei, Hongwei Han
Summary: The optical loss in printable mesoscopic perovskite solar cells (p-MPSCs) was analyzed and an antireflection coating using mesoporous SiO2 was reported to improve transmittance. The coating successfully enhanced the short-circuit current density and power conversion efficiency of p-MPSCs.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Coatings & Films
Emmanuel Rocca, Sophie Jacques
Summary: A new surface treatment for zinc-coated products has been developed to prevent premature tarnishing in moist atmosphere or during wet-dry climatic cycles. The electrochemical behavior of pure zinc was studied under different pH and potential conditions, and coatings constituted by zinc heptanoate or zinc hydroxyheptanoate were synthesized and tested.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Energy & Fuels
Jui-Yu Wang, Chien-Sheng Huang, Sin-Liang Ou, Yun-Shao Cho, Jung-Jie Huang
Summary: This study introduces a novel technique for the fabrication of front and rear surface coatings for solar cells, which shows promising potential for large-scale production in non-vacuum environments with excellent coating quality and uniformity.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Materials Science, Multidisciplinary
Somin Park, Youngkuk Kim, Junsin Yi, Muhammad Aleem Zahid, Muhammad Quddamah Khokhar, Shahzada Qamar Hussain
Summary: This study investigates the optical and electrical properties of indium zinc oxide (IZO) films compared to indium tin oxide (ITO) films, and introduces a double layer antireflection coating (DLARC) structure using an atomic layer deposition (ALD) system. The DLARC, consisting of IZO and Al2O3, significantly improves the performance of silicon heterojunction (SHJ) solar cells.
Review
Materials Science, Multidisciplinary
Anastasia Novikova, Aviad Katiyi, Alina Karabchevsky
Summary: Solar energy is a valuable and promising source of renewable energy, but the current efficiency of photovoltaic cells used for collecting solar energy is low. Addressing optical losses is the main challenge. This review provides an overview of texturization as a technique to increase surface transparency, including the basic concepts, typical patterns, and representative works. The future of nature-inspired anti-reflective patterns is also discussed to encourage researchers in enhancing solar cell efficiency and expanding their applications.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
Muhammad Aleem Zahid, Muhammad Quddamah Khokhar, Ziyang Cui, Hyeonggi Park, Junsin Yi
Summary: This study aimed to improve the optical properties of Al2O3/ITO double-layered anti-reflection coating on silicon heterojunction solar cells, resulting in decreased reflection and increased EQE. The findings showed that the DLARC had better anti-reflection properties and higher J(sc) value compared to a single-layer ITO coating.
RESULTS IN PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Shahnawaz Uddin, Md Roslan Hashim, Mohd Zamir Pakhuruddin
Summary: Nanoporous b-Si synthesized through aluminium-catalyzed chemical etching (ACCE) process demonstrates superior broadband light absorption, making it suitable for photovoltaic and optoelectronic devices.
Article
Materials Science, Multidisciplinary
Santhosh Sivaraj, Rajasekar Rathanasamy, Gobinath Velu Kaliyannan, Manivasakan Palanisamy
Summary: Optically transparent zinc oxide and tantalum pentoxide thin films were deposited on the front surface of a polycrystalline silicon solar cell to minimize light reflection. The deposition was done using vacuum or non-vacuum-based coating techniques. The research used radio frequency sputter deposition technique to achieve uniform coatings of zinc oxide (ZnO), tantalum pentoxide (Ta2O5), and ZnO-Ta2O5 blends. The coated solar cells showed improved power conversion efficiency due to enhanced light transmission and were studied for their structural, optical, electrical, morphological, and thermal characteristics.
BULLETIN OF MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
Yanhao Wang, Zeyu Gu, Le Li, Siyi Liu, Jingjie Li, Linfeng Lu, Xiaodong Li, Wenzhu Liu, Ronglin Liu, Jia Chen, Yichen Wang, Shan-Ting Zhang, Dongdong Li
Summary: This study investigates the potential of zinc sulfide (ZnS) as electron selective contacts (ESCs) in n-type crystalline silicon (c-Si) solar cells. The ZnS-based dopant-free n-Si solar cells achieved an efficiency of 20.03% with SiOx(FGA)/ZnS/Mg/Ag contact, which is currently the highest reported efficiency for ZnS-based c-Si solar cells. Furthermore, the device maintained over 98% of its initial efficiency after being stored in the air for 30 days, indicating its promise for long-term deployment. This work highlights the great potential of using metal sulfides as high-performance and stable passivating contacts in dopant-free c-Si solar cells.
MATERIALS TODAY ENERGY
(2023)
Article
Chemistry, Physical
S. Santhosh, R. Rajasekar, V. K. Gobinath, C. Moganapriya, S. Arun Kumar, A. Manju Sri
Summary: The study focuses on the development of MoSe2 nano-crystalline structure as an effective antireflective material for solar cells. Through electrospraying technique, thin films were deposited on the solar cell surface, resulting in improved power conversion efficiency and enhanced light trapping ability.
Article
Engineering, Mechanical
K. Suganeswaran, R. Parameshwaran, R. Sathiskumar, T. Ram Prabhu, N. Nithyavathy
Summary: The novel friction stir technology is adopted in modern automotive industries to enhance the properties of AA7075 surface composites. The addition of fly ash and emery particles improves hardness, impact toughness and tribological behavior. The composites show a fine and homogenous distribution of reinforcements, and good interface between the reinforcement particulates and base substrate. The hybrid composite specimen 50E50FA exhibits superior hardness, reduced grain size, increased crack propagation resistance, and decreased wear rate.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2022)
Article
Engineering, Chemical
K. Suganeswaran, P. Muthukumar, R. Parameshwaran, N. Nithyavathy, T. Mohanraj, K. Deepandurai
Summary: Aluminum alloy-based surface composites processed by friction stir processing exhibit enhanced hardness and impact energy, making them potentially suitable for aircraft and automotive applications. The use of design of experiments (DOEs) helps determine the optimal combination of process parameters. The number of passes is identified as the key factor impacting hardness and impact energy. The surface hybrid composite with both WO3 and SiC particles shows significantly increased microhardness and enhanced impact energy.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
C. Moganapriya, R. Rajasekar, R. Santhosh, S. Saran, S. Santhosh, V. K. Gobinath, P. Sathish Kumar
Summary: This research successfully applied specific coatings for dry machining of austenitic stainless steels and optimized the process parameters through multi-criteria decision making, leading to improved cutting performance.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Review
Mechanics
A. Mohan Kumar, R. Parameshwaran, R. Rajasekar, C. Moganapriya, R. Manivannan
Summary: This review discusses the drilling process of various composite materials with different fibers. Different drill tools, their materials and geometries, as well as drilling methods, are considered. Various numerical models for determining the critical thrust force and delamination are analyzed. It is concluded that unconventional geometries and materials yield better results in reducing thrust force and delamination compared to traditional materials and geometrical shapes of drill tools.
MECHANICS OF COMPOSITE MATERIALS
(2022)
Article
Chemistry, Physical
P. Kanakarajan, C. Moganapriya, R. Rajasekar, S. Sundaram, M. Syed Thasthagir, S. Soundararajan, K. Manu Barath
Summary: This study focuses on the machining of advanced ceramic elements in the engineering field. By conducting machining tests under different process parameters, a parametric analytical model is developed. The experimental results align with the predicted values, demonstrating the effectiveness of the model.
SURFACE REVIEW AND LETTERS
(2022)
Article
Materials Science, Multidisciplinary
N. Muralidharan, K. Chockalingam, K. Kalaiselvan, N. Nithyavathy
Summary: The fabrication of AA6061 metal matrix reinforcement with various weight ratios of ZrO2 and its effect on the microstructure and mechanical properties of the composites were investigated. The results showed that the addition of ZrO2 improved the hardness and tensile strength of the composites.
ADVANCES IN MATERIALS AND PROCESSING TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
K. Suganeswaran, S. Ragu Nathan, R. Parameshwaran, N. Nithyavathy, N. R. Dhineshbabu
Summary: This study fabricated Surface Hybrid Composites (SHCs) using Friction Stir Processing to enhance the strength and hardness properties of the automotive monocoque. The results showed that this technique achieved a homogeneous distribution of reinforcements and improved the microhardness and ultimate tensile strength of the composites.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Multidisciplinary
Moganapriya Chinnasamy, Rajasekar Rathanasamy, Sathish Kumar Palaniappan, Samir Kumar Pal
Summary: By applying cryogenic treatment, the wear resistance and hardness of rock cutting bits can be enhanced, leading to changes in their microstructure and an increase in wear rate.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2023)
Article
Engineering, Geological
Sathish Kumar Palaniappan, Samir Kumar Pal, Moganapriya Chinnasamy, Rajasekar Rathanasamy
Summary: In this study, a newly designed shaping machine and a triaxial force dynamometer were used to measure the efficiency of rock cutting and the wear behavior of aluminum titanium nitride-coated conical cutting bits. The results showed that the coated bits had a higher hardness range and reduced wear rate compared to the uncoated bits. The findings of this research contribute to extending the application of surface miners in excavating harder rocks in mines.
INTERNATIONAL JOURNAL OF GEOMECHANICS
(2023)
Article
Chemistry, Physical
Rajasekar Rathanasamy, Gobinath Velu Kaliyannan, Santhosh Sivaraj, Essakkiappan Muthiah, Abdul Azeem Ajmal Khaan, Dharmaprakash Ravichandran, Md. Elias Uddin
Summary: This research work focuses on enhancing the power conversion efficiency of polycrystalline silicon solar cells by using synthesized molybdenum disulphide (MoS2) as an antireflection coating. The results showed that the 120-minute coated sample achieved the highest conversion efficiency of 17.96% and 18.82% under direct sunlight and neodymium light, with a resistivity as low as 2.79x10-3 omega-cm. The analysis also revealed that the MoS2 coating had excellent optical properties, with a maximum transmittance of 93.6% and minimum reflectance of 6.3% for the A-IV sample in the visible UV spectrum.
INTERNATIONAL JOURNAL OF PHOTOENERGY
(2023)
Article
Materials Science, Multidisciplinary
Moganapriya Chinnasamy, Rajasekar Rathanasamy, Biswajit Samanta, Samir Kumar Pal, Sathish Kumar Palaniappan, Roja Rani Korrayi, Padmakumar Muthuswamy, Shibayan Roy
Summary: This study evaluates the effect of cryogenic treatment on the hardness and wear resistance of WC-6%Co rock cutting bits. The results show that cryogenic treatment increases the hardness and wear resistance of the cutting bits and reduces the fraction of the b-Co phase. Cryo-treated bits also exhibit higher coefficient of friction compared to untreated bits.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Santhosh Sivaraj, Rajasekar Rathanasamy, Gobinath Velu Kaliyannan, Manivasakan Palanisamy
Summary: Optically transparent zinc oxide and tantalum pentoxide thin films were deposited on the front surface of a polycrystalline silicon solar cell to minimize light reflection. The deposition was done using vacuum or non-vacuum-based coating techniques. The research used radio frequency sputter deposition technique to achieve uniform coatings of zinc oxide (ZnO), tantalum pentoxide (Ta2O5), and ZnO-Ta2O5 blends. The coated solar cells showed improved power conversion efficiency due to enhanced light transmission and were studied for their structural, optical, electrical, morphological, and thermal characteristics.
BULLETIN OF MATERIALS SCIENCE
(2023)
Proceedings Paper
Materials Science, Multidisciplinary
Essakkiappan Muthiah, Rajasekar Rathanasamy, Dharmaprakash Ravichandran, Dhayananth Palanichamy, Santhosh Sivaraj
Summary: The research mainly focused on analyzing the performance of plastic crushers designed as alternatives to traditional impact crushers. The operating mechanism of the injection molding machine combined with the shredder involves cutting the plastic with double-edged blades and then loading the shredded plastic into the hopper and pressing it against the desired mold. The blades, designed using PET materials, reduce mechanical complexity and grinding cost while having higher tensile strength. The cutting time required for shredding the plastic is directly proportional to the thickness and type of plastic material used.
MATERIALS TODAY-PROCEEDINGS
(2022)
