Article
Energy & Fuels
Sheikh Rashel Al Ahmed, Adil Sunny, Sabrina Rahman
Summary: This study designed and studied an antimony selenide (Sb2Se3)-based solar cell with a back surface field (BSF) layer, aiming to improve its performance by introducing barium silicide (BaSi2) material. Comparative analysis between conventional and proposed structures showed that the proposed solar cell structure with BaSi2 BSF layer achieved higher efficiency.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Optics
Avishek Roy, Abhijit Majumdar
Summary: Numerical simulation was conducted on CuO/CdTe/CdS/TiO2 multi-junction solar cell to optimize photovoltaic parameters, such as efficiency, open circuit voltage, short circuit current density, and fill factor by modifying the thickness of HTL, TCO and the absorber layer. Efficiencies of 23.59% and 24.48% were achieved at different acceptor/donor densities and defect concentrations, with Pt identified as the most suitable back contact metal for further efficiency improvement to 28.11%. This simulation approach will benefit the synthesis and development of new CdTe/CdS thin film solar cells.
Article
Energy & Fuels
Jyoti, Bhaskar Chandra Mohanty
Summary: Field passivation of the back contact interface has been shown to control recombination and improve efficiency in CZTS solar cells. The addition of BSF layers between Mo and CZTS can greatly enhance device efficiency. Numerical calculations have revealed the critical dependence of back contact interface recombination on various factors.
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
Salaheddine Moujoud, Bouchaib Hartiti, Samira Touhtouh, Chaymaa Rachidy, Fouad Belhora, Philippe Thevenin, Abdelowahed Hajjaji
Summary: This study modeled CuInS2 based solar cells and investigated the effects of temperature, absorber layer thickness, and alternative materials on the photovoltaic performance. Optimization suggestions were proposed to improve efficiency through design improvements.
Article
Engineering, Electrical & Electronic
Rkia El Otmani, Ahmed El Manouni, Abdelmajid Al Maggoussi
Summary: This work focuses on numerical modeling of Cu2ZnSnSe4 (CZTSe) thin film solar cells and proposes an optimal conventional cell structure as well as improved structures with different highly P-doped materials as back surface field (BSF) layers. The insertion of the BSF layer results in enhanced photovoltaic parameters and reduced recombination rate in the CZTSe absorber.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Energy & Fuels
Khuram Ali, Zohaib Ali
Summary: This study investigates the performance of thin n-CdS/p-SiGe/p+-BaSi2 heterojunction solar cells with a BaSi2 layer as the BSF material. The results show that optimal performance is achieved when the SiGe absorber layer thickness is between 10 and 15 μm. By optimizing the thickness of the BSF BaSi2 layer, an efficiency of 17.05% is anticipated for the device.
Article
Physics, Applied
Baseerat Bibi, Bita Farhadi, H. M. Noor Ul Huda Khan Asghar, Waseem Ur Rahman, Aimin Liu
Summary: This study presents a tandem solar cell made of kesterite materials that can capture sunlight over a broad spectrum. The performance of the upper and lower subcells is optimized, resulting in improved efficiency and open-circuit voltage of the solar cell.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Isaac Montoya De Los Santos, Alan A. Perez-Orozco, Diego A. Lina-Martinez, Maykel Courel, Carlos A. Meza-Avendano, Jorge A. Borrego-Perez, Laura M. Perez, David Laroze
Summary: Numerical simulation is a valuable tool for optimizing experimental processes in terms of time and cost, interpreting measurements in complex structures, designing and optimizing solar cells, and predicting optimal parameters for device manufacturing. In this study, a detailed simulation was conducted using the Solar Cell Capacitance Simulator (SCAPS) to evaluate the influence of various factors on the performance of a CdTe/CdS solar cell.
Article
Energy & Fuels
Mamta, K. K. Maurya, V. N. Singh
Summary: Antimony selenide and antimony sulfide are sustainable sources of renewable energy, with solar cells based on these materials gaining worldwide attention for their excellent performance and cost-effectiveness. By numerically analyzing these solar cells, it was found that zinc sulfide could replace toxic cadmium sulfide as a buffer layer material. Suggestions for further improving device performance were also provided.
Article
Optics
Shaikh Khaled Mostaque, Bipanko Kumar Mondal, Jaker Hossain
Summary: This article demonstrates the design and simulation of a highly-efficient CIGS-based solar cell, achieving an efficiency of 47% through longer wavelength absorption in the CGS layer with TSA two-step upconversion. The method numerically approaches the SQ detailed balance limit, providing a potential opportunity for enhancing existing PV parameters to researchers and manufacturers.
Article
Physics, Multidisciplinary
A. Najim, O. Bajjou, A. Bakour, L. Moulaoui, K. Rahmani
Summary: In this study, the potential role of graphene oxide (GO) material in CdTe-based solar cells was investigated. The electrical and photovoltaic performance of a GO/CdTe solar cell was studied using SCAPS-1D software. Understanding the impact of solar cell properties like temperature, thickness, doping concentration, and operational resistors on device performance is essential. Simulation results showed that the current exponentially changes with applied voltage. The optimized GO/CdTe solar cell achieved a high power conversion efficiency of 13.95% under certain parameters, indicating promise for future technological applications.
INDIAN JOURNAL OF PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
A. M. Islam, S. Islam, K. Sobayel, E. I. Emon, F. A. Jhuma, M. Shahiduzzaman, Md. Akhtaruzzaman, N. Amin, M. J. Rashid
Summary: The study proposes using a single layer of WS2 to replace the traditional CdS/ZnO bilayer window in CdTe solar cells, and by studying the influence of different defect state densities on performance parameters, it is found that this structure can perform as efficiently as CdTe solar cells with a CdS/ZnO bilayer.
Article
Engineering, Electrical & Electronic
Shivani Gohri, Jaya Madan, Rahul Pandey, Rajnish Sharma
Summary: CZTSSe-based solar cell structures have advantages of low cost, high stability, and high absorption coefficient, but their power conversion efficiency needs improvement. This study successfully increased efficiency from 12.57% to 16.34% and 17.04% by examining the feasibility of using SnS and Sn2S3 as BSF layer materials.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Energy & Fuels
Dan Yang, Xiaohan Yin, Jingquan Zhang, Wei Li
Summary: Research findings suggest that a single back buffer layer has inherent defects, while a double- or multi-layer structure can compensate for these drawbacks and exhibit better performance. Based on energy band analysis and simulations, it is shown that reasonable alignment and carrier density are sufficient for most cases, with the need for additional layers only in extreme scenarios.
Article
Critical Care Medicine
Pompermaier Laura, Adorno Jose, Allorto Nikki, Altarrah Khaled, Juan Barret, Carter Jeffery, Chamania Shobha, Chong Si Jack, Corlew Scott, Depetris Nadia, Elmasry Moustafa, Junlin Liao, Haik Josef, Horwath Briana, Keswani Sunil, Kiyozumi Tetsuro, Leon-Villapalos Jorge, Luo Gaoxing, Matsumura Hajime, Miranda-Altamirano Ariel, Moiemen Naiem, Nakarmi Kiran, Ahmed Nawar, Ntirenganya Faustin, Olekwu Anthony, Potokar Tom, Qiao Liang, Rai Shankar Man, Steinvall Ingrid, Tanveer Ahmed, Philipe Luiz Vana Molina, Wall Shelley, Fisher Mark
Summary: This observational study investigated the changes in burn care worldwide during the COVID-19 pandemic. It found that the availability of standard resources decreased globally, but the use of telemedicine increased. Burn units in low-income countries were more likely to be closed.
Article
Biochemistry & Molecular Biology
Xueting Xu, Tanveer Ahmed, Lulu Wang, Xintao Cao, Zeyu Zhang, Ming Wang, Yuan Lv, Shahzina Kanwal, Muqddas Tariq, Runxia Lin, Hui Zhang, Yinghua Huang, Hao Peng, Danni Lin, Xue Shi, Didi Geng, Baohua Liu, Xiaofei Zhang, Wen Yi, Yan Qin, Miguel A. Esteban, Baoming Qin
Summary: The study demonstrates the role of mTORC1 in regulating paused pluripotency in mESCs, and reveals a context-dependent function of eIF4F in translating pluripotency genes in SL and 2iL culture conditions.
Article
Computer Science, Software Engineering
Shambhavi Mishra, Tanveer Ahmed, Vipul Mishra, Sami Bourouis, Mohammad Aman Ullah
Summary: This article proposes a multivariate and online stock price prediction approach based on kernel adaptive filtering (KAF). The approach is evaluated using ten different KAF algorithms on multiple time windows. The experimental findings show the superiority of the proposed method in both stock price prediction and high-frequency trading.
SCIENTIFIC PROGRAMMING
(2022)
Article
Computer Science, Information Systems
Siddhant Sinha, Shambhavi Mishra, Vipul Mishra, Tanveer Ahmed
Summary: Stock price prediction is a challenging task. This article proposes a 3D Convolutional Neural Network based approach for classifying the directional trends in stock prices. The method groups companies from the same sector and predicts their overall trends simultaneously to analyze the influence between companies. Experimental results show that the proposed method achieves promising performance in stock price prediction.
JOURNAL OF KING SAUD UNIVERSITY-COMPUTER AND INFORMATION SCIENCES
(2022)
Article
Ecology
Tanveer Ahmed, Afifullah Khan
Summary: This study assessed the response of avian species and avifaunal feeding guilds to landscape compositional heterogeneity. The results revealed that birds of different feeding guilds responded differently to landscape compositional heterogeneity.
JOURNAL OF TROPICAL ECOLOGY
(2022)
Article
Computer Science, Information Systems
Saira Beg, Faisal Baig, Yousaf Hameed, Adeel Anjum, Ahmed Khan
Summary: The importance of thermal images in various fields is undeniable. To secure the thermal images, we propose an encryption scheme based on chaotic systems. This scheme encrypts the thermal images using chaotic maps and substitution boxes, and it demonstrates good performance in statistical and security analysis.
MULTIMEDIA TOOLS AND APPLICATIONS
(2022)
Article
Social Sciences, Interdisciplinary
Salman Mahmood, Wen Shuhui, Shoaib Aslam, Tanveer Ahmed
Summary: This study examines the dimensions of financial inclusion and its relationship with the disposable income of Pakistani households from the beneficiaries' perspective. The findings suggest that financial inclusion, including access, availability, usage, and cost, significantly impacts disposable income. The research highlights the importance of including low-income urban households in the formal financial system to improve their disposable income and alleviate poverty.
Article
Psychology, Clinical
Tanveer Ahmed, Yang Chaojun, Yang Hongjuan, Salman Mahmood
Summary: The main objective of this study is to assess the impact of empowering leadership on employees' job performance at the academic level, with mediating variables of goal clarity and self-efficacy. The research analyzed data from 400 employees in higher education institutions in Pakistan and used statistical tools like SPSS and AMOS to evaluate the relationship between the constructs. The results indicate a positive influence of empowering leadership behaviors on goal clarity, self-efficacy, and employees' job performance, mediated by goal clarity and self-efficacy.
PSYCHOLOGY RESEARCH AND BEHAVIOR MANAGEMENT
(2022)
Article
Critical Care Medicine
Laura Quinn, Tanveer Ahmed, Henry Falk, Ariel Miranda Altamirano, Adelin Muganza, Kiran Nakarmi, Ahmed Nawar, Michael Peck, Shankar Man Rai, Jo Sartori, Luiz Philipe Molina Vana, Benjamin Wabwire, Naiem Moiemen, Richard Lilford
Summary: The incidence of burns remains high in Low- and Middle-Income Countries (LMICs) while decreasing in high-income countries. However, the causes of burns in LMICs are poorly documented. This study aimed to document the causes of severe burns and their changes over time. A cross-sectional survey was conducted in eight burn centers across Africa, Asia, and Latin America. The results showed that hot liquid and flame burns were the most common, with electric burns also being common in certain areas. Burns primarily occurred in household settings, but occupational burns and intentional self-harm or assault were also observed. The study also found variations in mortality rates and a decrease in hospital stay duration.
JOURNAL OF BURN CARE & RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Jiaxin Wu, Hongjuan Yang, Tanveer Ahmed
Summary: Poverty eradication is crucial for sustainable development. China's main poverty alleviation policy is the continuous poverty alleviation policy in poverty-stricken areas. The research shows that this policy significantly increased GDP in these areas and promoted economic development through industrial structure adjustment.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)
Article
Energy & Fuels
Amal Bouich, Joeluis Cerutti Torres, Hasnae Chfii, Julia Mari-Guaita, Yousaf Hameed Khattak, Faisal Baig, Bernabe Mari Soucase, Pablo Palacios
Summary: In this study, a successful technique is proposed to produce delafossite materials as Hole Transport Layer (HTL) in inorganic lead halide Perovskite solar cells (PSCs). The effects of M cations, such as Al, Ga, Fe, Cr, Ni, Co, Cr, on the crystal structure, morphology, and optical properties of delafossite CuMO2 were investigated. Experimental and DFT calculations were conducted to analyze the electronic properties of the delafossite layers. Numerical analysis in SCAPS-1D software showed that the HTL delafossite layers achieved the highest power conversion efficiency (PCE%) of 22.90. This research provides a valuable direction for improving the performance of Perovskite-based solar cells (PSCs).
Article
Physics, Condensed Matter
Imen Harabi, Yousaf Hameed Khattak, Safa Jemai, Shafi Ullah, Hanae Toura, Bernabe Mari Soucase
Summary: InP QDs are a promising alternative to traditional QDs, and the synthesis of ZnS/ZnS double shell QDs improves their photoluminescence and surface morphology. Deposition of these QDs onto TiO2 NTAs leads to significantly improved photocurrent efficiency, with InP/ZnS/ZnS/TiO2 having a photocurrent density almost six times higher than TiO2/InP QDs.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Energy & Fuels
Yousaf Hameed Khattak, Faisal Baig, Amal Bouich, Julia Mari-Guaita, Ahmed Shuja, Bernabe Mari Soucase
Summary: This paper presents a comprehensive numerical investigation of CZTS-based solar cells, revealing the potential to significantly enhance the power conversion efficiency through optimization and the integration of new materials. The exploration of electron transport layer materials and hole transport layer materials has also achieved significant progress.
Review
Green & Sustainable Science & Technology
Amal Bouich, Inmaculada Guaita Pradas, Mehwish Aziz Khan, Yousaf Hameed Khattak
Summary: In order to meet climate targets, the production and consumption of energy must transition to renewable alternatives. Solar photovoltaic systems have gained popularity as an alternative energy source. Research indicates that both developed and developing countries possess significant potential to mitigate climate change effects through renewable energy adoption.
Article
Agriculture, Dairy & Animal Science
A. A. Shad, T. Ahmad, M. Iqbal, M. J. Asad
Summary: The experiment showed that protease supplementation significantly improved body weight gain and feed efficiency of broiler chickens, as well as the digestibility of nitrogen, protein, and amino acids in low protein diets. However, it had no effect on carcass parameters, blood chemistry, and intestinal integrity.
BRAZILIAN JOURNAL OF POULTRY SCIENCE
(2022)
