Article
Chemistry, Physical
Zongge Li, Danni Wang, Huifang Li, Mang Ma, Ying Zhang, Zifeng Yan, Stefano Agnoli, Guoxin Zhang, Xiaoming Sun
Summary: This study demonstrates the potential of N-doped porous CMs with redox-able Zn atoms to achieve high Zn/N loading, pseudocapacitive behavior, and cycling stability, laying the foundation for a new type of high Zn/N-loading carbon materials.
Article
Nanoscience & Nanotechnology
Md. Ferdous Rahman, M. J. A. Habib, Md. Hasan Ali, M. H. K. Rubel, Md. Rounakul Islam, Abu Bakar Md. Ismail, M. Khalid Hossain
Summary: Inorganic CdTe and FeSi2-based solar cells have gained attention for their superior thermal stability and optoelectronic properties. This study presents an alternative technique using FeSi2 as a secondary absorber layer and In2S3 as the window layer to improve photovoltaic performance. Simulations optimize the thickness of the absorber layers and other parameters, resulting in enhanced efficiency and improved fill factor, open-circuit voltage, and short circuit current density. The addition of the FeSi2 layer improves quantum efficiency by enhancing solar spectrum absorption. This work offers a promising approach for high-performance and cost-effective CdTe-based solar cells.
Article
Chemistry, Physical
Jun Zhao, Gencai Pan, Kunlun Liu, Wenwu You, Suyue Jin, Yaxian Zhu, Huiping Gao, Huafang Zhang, Yanli Mao
Summary: Lead-free halide double perovskites with doped Er3+ ions exhibit efficient up-conversion and down-shifting emissions. The color of down-shifting luminescence can be controlled by increasing Er3+ ion doping concentration, while near-infrared light suitable for optical communication is emitted with the highest photoluminescence quantum yield reaching 38.36%. The rare earth ions doping in double perovskites shows promising potential for new functionalities in optoelectronic applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Civil
Ruoqiang Feng, Shen Liu, Chenglong Dai
Summary: Through experimental and numerical studies, it was found that the reticulated shell with double-ring joints does not damage the joints when the structure fails, with a buckling capacity of about 70% of the rigidly jointed shell. The nonlinear buckling capacity and initial stiffness of the reticulated shell with double-ring joints are approximately 66% of that of the rigidly jointed shell.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Electrical & Electronic
Olavo Cardozo, Sajid Farooq, Patricia M. A. Farias, Naum Fraidenraich, Andreas Stingl, Renato E. de Araujo
Summary: This work proposes a new approach to improve the performance of organic solar cells by using Zinc Oxide (ZnO) nanodiffusers. The experimental evaluation and computational simulations both confirmed the effectiveness of ZnO nanoparticles in enhancing the efficiency of organic solar cells. The use of ZnO nanodiffusers with a diameter of 160 nm significantly reduced device reflectance and improved light absorption, leading to an increase in the photocurrent generation.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Electrochemistry
Kyung Min Lee, Ketack Kim
Summary: The mass balance of electrodes affects the contribution of each electrode to the cell voltage, and adjusting electrode thickness can balance ion migration resistances to achieve independent contributions. Balancing electrode thickness can prolong electrolyte life and improve performance.
ELECTROCHIMICA ACTA
(2022)
Article
Thermodynamics
Zhili Sun, Xiaobao Chen, Yongan Yang, Yufeng Gao, Tong Ren, Yi'an Wang, Hailing Fu, Jieling Zhang, Sicong Hou, Feng Jiao, Di Liang, Jintao Li
Summary: This study compares mathematical models and experimental data to improve the performance of an ice bucket. Three concepts, including ice-layer drying time ratio, deicing time ratio, and water-distribution icing ratio, are introduced for optimizing the structure and water distribution of the ice bucket. The results suggest that setting appropriate ice-making period and ice-layer thickness can enhance the ice bucket's performance.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Mechanics
Jianhui Fan, Jiaao Hao, Chih-Yung Wen
Summary: This study investigates the laminar flow over a canonical 25-55 degrees double cone in hypersonic conditions using computational fluid dynamics, bispectrum analysis, and dynamic mode decomposition (DMD). The research focuses on the evolution and nonlinear behavior of perturbation modes in the flow.
Article
Energy & Fuels
Deb Kumar Shah, K. C. Devendra, M. Muddassir, M. Shaheer Akhtar, Chong Yeal Kim, O-Bong Yang
Summary: This paper describes a simulation study on optimizing high-performance cadmium telluride (CdTe) solar cells by varying doping concentrations, carrier lifetimes, temperature, and layer thickness. The study found the highest efficiencies with specific parameters, such as 18.29% with a doping concentration of 1.5 x 10(17) cm(-3) for the absorber layer. The research also explored the impact of carrier lifetime and layer thickness on solar cell efficiency.
Article
Engineering, Chemical
Seyed Mojtaba Mirfendereski, Jerry Y. S. Lin
Summary: A hydrophobic MFI zeolite membrane with high ethanol/water separation performance was successfully synthesized through a new method involving dual-layer seeding and varying-temperature secondary growth. The optimized membrane structure consists of a thin, fully inter-grown, and dense top zeolite layer for high selectivity, and a porous low inter-grown bottom zeolite layer to minimize resistance and aluminum transfer. The best supported MFI zeolite membrane exhibits a separation factor of 160 for ethanol/water pervaporation with a total flux of 3 kg m(-2) h(-1).
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Siyu Wang, Zhenwu Jiang, Zhan Shen, Yali Sun, Hongling Guo, Li Wu, Jianjun Zhang, Jianping Ao, Hai Wang, Yi Zhang
Summary: The study introduced an additional In(2)S(3) buffer layer and improved the properties of the Zn(O,S) and CZTSSe layers through post-annealing and etching treatments, resulting in an efficiency improvement of 24% in CZTSSe solar cells.
SCIENCE CHINA-MATERIALS
(2021)
Article
Engineering, Mechanical
Dinh-Quan Doan
Summary: This study systematically investigates the indentation behavior of Cu80Ta20/Cu20Ta80 amorphous/amorphous nanolaminates using molecular dynamics simulation. The results show that the mechanical properties of the nanolaminates are strongly dependent on the layer thickness and interface, as well as the indenter size, loading velocity, and surface layer.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Thermodynamics
He Liu, You Tian, Jia'ao Liu, Dongwei Zhang, Xuehong Wu, Zengyao Li
Summary: A new solar drying system based on silica aerogels is proposed, which has high solar heat collection efficiency, high hot air outlet temperature, and high drying efficiency. Experimental results show that the optimum thickness of the silica aerogel insulation layer is 10 mm. The proposed system can meet the drying requirements of most agricultural products without an additional heat source and shorten the drying time by 58%.
Article
Chemistry, Physical
Hailin Lei, Mao Peng, Jing Liu, Jinli Zhang, Wei Li
Summary: Boron and nitrogen co-modified LiNi0.6Co0.1Mn0.3O2 material was synthesized and found to significantly affect the crystal structure, electronic conductivity, and electrochemical performance. The optimal sample NCM/B4N4 showed higher initial discharge capacity, better cycle stability, and improved electronic conductivity compared to the pristine material. TEM and XPS analysis confirmed the successful doping of boron and nitrogen, while PXRD and in situ XRD tests demonstrated the inhibition of irreversible phase transition. DFT calculations and GITT test further supported the enhanced lithium ion diffusion rate in NCM/B4N4.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Xulin Li, Endi Zhang, Guohui Feng, Tianyu Wang, Xing Wang
Summary: In this study, a new phase change unit was designed using a bilayer tube and two paraffin phase change materials with different melting points. The heat storage and exothermic properties of the phase change unit are optimized from both structural and material aspects. Through experiments and numerical simulations, the same structure/material optimization method is first analyzed and selected from the best, and then the same material/structure optimization is investigated to analyze the difference in thermal performance compared to a single phase change unit. The results show that PCM-1/2 Model D has good overall performance, with a 13.4 % increase in total heat storage, a 3.4 % increase in heat storage efficiency, and a 14.1 % increase in total heat release compared to PCM-2 Model A. It is clear that the design of a phase change unit must be considered from various aspects and that structural optimization plays a crucial role in improving the overall performance of a phase change unit.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Multidisciplinary
Nilofar Asim, Marzieh Badiei, Nurul Asma Samsudin, Masita Mohammad, Halim Razali, Soroush Soltani, Nowshad Amin
Summary: Graphene and graphene-based materials have great potential in the construction industry, improving the performance and properties of building materials. However, their research and application trends are not remarkable and face challenges in terms of modification, stability, compatibility, and dispersion.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Samiya Mahjabin, Md Mahfuzul Haque, K. Sobayel, Vidhya Selvanathan, M. S. Jamal, M. S. Bashar, Munira Sultana, Mohammad Ismail Hossain, Md Shahiduzzaman, Merfat Algethami, Sami S. Alharthi, Nowshad Amin, Kamaruzzaman Sopian, Md Akhtaruzzaman
Summary: In this study, tungsten oxide (WOx) thin films were synthesized using the RF magnetron sputtering method with varying sputtering power. Different investigations were conducted to evaluate the morphological, optical, and dielectric properties of the films. The results showed that WOx films grown under different sputtering powers exhibited significant variations in these properties, making them suitable for optoelectronic applications.
Article
Materials Science, Multidisciplinary
Nur Syamimi Noorasid, Faiz Arith, Ahmad Nizamuddin Mustafa, Puvaneswaran Chelvanathan, Mohammad Istiaque Hossain, Mohd Asyadi Azam, Nowshad Amin
Summary: Perovskite Solar Cells (PSC) are rapidly growing due to their high efficiency, simple synthesis process, high voltage, and low cost. However, their stability and use of lead as a toxic heavy metal are major challenges. This paper focuses on optimizing key layers in the PSC structure and studying the impact of parameters on performance using simulation software. Different types of metal back contacts are also examined. The simulation shows that optimizing each layer improves the PSC performance, achieving impressive results.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Electrochemistry
Savisha Mahalingam, Abreeza Manap, Ramisha Rabeya, Kam Sheng Lau, Chin Hua Chia, Huda Abdullah, Nowshad Amin, Puvaneswaran Chelvanathan
Summary: The goal of this study is to investigate the impact of the chemical treatment of titanium tetrachloride (TiCl4) on graphene quantum dots (GQDs)-based dye-sensitized solar cells (DSSCs). The mechanism of how the TiCl4 treatment provides high surface area and porosity to enhance the adsorption of GQDs and dye is proposed. The electron transport analysis showed that the treatment reduced electron recombination rate and increased electron injection efficiency, resulting in improved performance of the DSSC.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Li Feng, Nowshad Amin, Jingwei Zhang, Kun Ding, Frank U. U. Hamelmann
Summary: This study presents a simple and low-cost approach to evaluate the real-time status and localize faults of a smart PV system at module level. The performance evaluation approach is developed using performance indicators, a data matrix, and a thermal model. The potential of the approach is demonstrated through successful experiments. The approach is effective in evaluating module-level performance and diagnosing faulty modules, especially for cracks.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Electrical & Electronic
Omsri Vinasha Aliyaselvam, Faiz Arith, Ahmad Nizamuddin Mustafa, Puvaneswaran Chelvanathan, Mohd Asyadi Azam, Nowshad Amin
Summary: A high conductivity, density, and uniform Copper(I) Iodide (CuI) film was directly prepared on an Indium-doped Tin Oxide (ITO) substrate, serving as an efficient Hole Transporting Layer (HTL) for perovskite solar cell (PSC) applications. Using Monoethanolamine (MEA) as a green solvent without additional additives, the CuI film exhibited desirable properties. The use of lower temperature (350 degrees C) for the growth of gamma-CuI reduced fabrication costs, and an optimized annealing temperature of 80 degrees C resulted in a high conductivity of 28.38 S/cm. The CuI-based PSC achieved a power conversion efficiency (PCE) of 21.37%, fill factor (FF) of 82.77%, short-circuit current density (J(sc)) of 22.74 mA/cm², and open-circuit voltage (V-oc) of 1.14 V, indicating the effectiveness of MEA as a solvent and the importance of annealing temperature in CuI structure formation. This study highlights the potential for simple, inexpensive, and rapid HTL film preparation, contributing to the cost reduction in solar cell production.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Fazliyana 'Izzati Za'abar, Ahmad Wafi Mahmood Zuhdi, Camellia Doroody, Puvaneswaran Chelvanathan, Yulisa Yusoff, Siti Fazlili Abdullah, Mohd. Shaparuddin Bahrudin, Wan Sabeng Wan Adini, Ibrahim Ahmad, Wan Syakirah Wan Abdullah, Nowshad Amin
Summary: The effect of Mo thin film deposition power on the formation of MoSe2 interfacial layer grown via the annealing of CIGSe/Mo precursors in an Se-free atmosphere was investigated. By increasing the deposition power, the conductivity of the Mo film significantly improved and the formation of MoSe2 increased. Controlling the Mo deposition power can regulate the thickness of the unintentional MoSe2 layer growth and contribute to improved CIGSe solar cell performance and stability.
Article
Chemistry, Physical
Hasrul Nisham Rosly, Camellia Doroody, Muhammad Najib Harif, Ili Salwani Mohamad, Mustapha Isah, Nowshad Amin
Summary: The effect of nontoxic chloride treatment on the crystallinity and optoelectrical characteristics of CdSe thin films was investigated. Comparative analysis using different molarities of InCl3 showed that CdSe properties were significantly improved. XRD measurements revealed that the treated CdSe samples had larger crystallite size and reduced strain compared to the untreated samples. Compositional analysis confirmed the presence of indium in the treated samples, and FESEM images demonstrated optimized grain arrangements. UV-Vis measurements showed a decrease in band gap after treatment, and Hall effect results indicated an increase in carrier concentration without affecting resistivity.
Article
Crystallography
Muhammad Najib Harif, Camellia Doroody, Allina Nadzri, Hasrul Nisham Rosly, Nur Irwany Ahmad, Mustapha Isah, Nowshad Amin
Summary: In this study, the loss mechanism and performance limitations of the CdTe solar cell device were analyzed using a SCAPS-1D simulator, with a focus on the band-bending effect caused by the copper chloride treatment and Cu2Te layer formation at the back contact. The optimal energy bandgap range for the back surface layer of Cu2Te was determined to be 1.1 eV to 1.3 eV, resulting in a maximum conversion efficiency of around 21.3%. The effect of the absorber layer's carrier concentration on CdTe film thickness, bandgap, and operational temperature was also investigated, revealing the significant contribution of acceptor concentration to the device performance.
Article
Materials Science, Multidisciplinary
Camellia Doroody, Kazi Sajedur Rahman, Puvaneswaran Chelvanathan, Mohd Adib Ibrahim, Kamaruzzaman Sopian, Nowshad Amin, Shahariar Chowdhury, Sittiporn Channumsin
Summary: The study aims to insert a highly resistive transparent (HRT) layer with optimized UV transmission by engineering the bandgap through varying thickness and dopant concentration. ZnO and Mg-doped ZnO (MZO) are proposed as potential HRT layers for CdTe solar cell devices to manage bandgap, achieve high transmission at short wavelength, and reduce current loss. Key performance parameters of the proposed devices, including open circuit voltage, short circuit current, fill factor, conversion efficiency, and quantum efficiency, are evaluated using SCAPS-1D modelling software. The simulation is based on experimental data to validate the findings. Results show that the conversion efficiency for thin-film solar cells with ITO/CdS/CdTe, ITO/ZnO/CdS/CdTe, and ITO/MZO/CdS/CdTe configurations are 17.83%, 18.76%, and 20.27% respectively. The optimal carrier concentration for efficient CdTe solar cells design using ZnO and MZO is found to be 1016 cm-3.
RESULTS IN PHYSICS
(2023)
Article
Thermodynamics
Tariq Nawaz Chaudhary, Ali Akbar, Muhammad Usman, Muhammad Atif Mahmood, Ali O. M. Maka, Baixin Chen
Summary: Parametric and sensitivity analysis were conducted to investigate the effects of different operational and geometrical parameters on cell performance and thermal impacts in SOFCs. The results showed that an increase in operating temperature led to an increase in current density and thermal stress generation. The sensitivity analysis revealed that operating temperature had the largest contribution to cell performance, followed by electrolyte thickness, material porosity, air-fuel ratio, and flow configuration.
ENERGY CONVERSION AND MANAGEMENT-X
(2023)
Article
Chemistry, Physical
Ili Salwani Mohamad, Camellia Doroody, Wabel Mohammed Alkharasani, Mohd Natashah Norizan, Puvaneswaran Chelvanathan, Seyed Ahmad Shahahmadi, Nowshad Amin
Summary: In this study, the integration of perovskite and silicon solar cells was investigated by varying the properties of the interconnecting layer (ICL). The investigation was conducted using the computer simulation software wxAMPS. The best electrical performance was achieved by inserting a 50 nm thick (E-g = 2.25 eV) interconnecting layer, which improved optical absorption coverage and current matching, leading to enhanced overall performance of the tandem solar cell.
Article
Energy & Fuels
Li Feng, Jingwei Zhang, Tiong Sieh Kiong, Kun Ding, Nowshad Amin, Frank U. Hamelmann
Summary: The study proposes an approach to investigate the effects of microcracks on the output characteristics of photovoltaic modules. A theoretical model derived from the equivalent single-diode model and an optimization algorithm based on particle swarm optimization are used to extract the parameters. The study shows that microcracks form early without creating inactive areas in solar cells, and they have minimal effects on the output performance of the modules.
IEEE JOURNAL OF PHOTOVOLTAICS
(2023)
Article
Multidisciplinary Sciences
Tariq Nawaz Chaudhary, Ali O. M. Maka, Muhammad Wajid Saleem, Nadeem Ahmed, Muneeb Ur Rehman, Muhammad Umer Azeem
Summary: Solar PV system technology is a crucial energy source that requires minimal effort and has no moving parts. It can help combat climate change and achieve sustainability. However, one of the main challenges is the deposition of dirt particles on the panel's surface, which decreases efficiency. This study investigates the impact of soiling deposition and surface temperature on PV module performance, finding that ash has the most detrimental effect, reducing current production by 50-60% compared to sand and soil.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Review
Chemistry, Multidisciplinary
Nilofar Asim, Mohd Sukor Su'ait, Marzieh Badiei, Masita Mohammad, Md. Akhtaruzzaman, Armin Rajabi, Nowshad Amin, Mariyam Jameelah Ghazali
Summary: Graphene-based materials incorporated with biopolymers have been widely studied and applied due to their interesting properties and potential applications. This study provides an overview of the various applications and recent progress in this field. Modification, stability, and compatibility are essential for developing advanced composites with desired properties. Despite the challenges, studying the applications and trends can guide researchers in overcoming obstacles and optimizing sustainable composites for specific industrial uses.
NANOTECHNOLOGY REVIEWS
(2022)
