Article
Energy & Fuels
Hamsa Ahmed, Mohamed Elshabasi, Joerg Ohland, Marko Stoelzel, Alfons Weber, Robert Lechner, Thomas Dalibor, Juergen Parisi, Sascha Schaefer, Stephan J. Heise
Summary: Cu(In,Ga)(S,Se)2 (CIGSSe) thin film solar cells have lower temperature sensitivity compared to conventional silicon-based technologies. The absorber layer was found to have the largest influence on the temperature dependence of power efficiency, mainly governed by a change in the open-circuit voltage.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Environmental Sciences
Ilias Fountoulakis, Kyriakoula Papachristopoulou, Emmanouil Proestakis, Vassilis Amiridis, Charalampos Kontoes, Stelios Kazadzis
Summary: Default aerosol extinction coefficient profiles are commonly used instead of measured profiles in radiative transfer modeling, increasing the uncertainties in the simulations. The present study aimed to determine the magnitude of these uncertainties and contribute towards the understanding of the complex interactions between aerosols and solar radiation. Using measured instead of default profiles for the simulations led to more significant differences in the atmosphere, especially during dust episodes.
Article
Engineering, Electrical & Electronic
Xi Jiang, Jun Wang, Hengyu Yu, Jianjun Chen, Zhong Zeng, Xin Yang, Z. John Shen
Summary: The article presents a potential approach for junction temperature estimation of SiC MOSFETs based on dynamic threshold voltage without the influence of load current variation. Experimental evaluation demonstrates a linear relationship between dynamic threshold voltage and junction temperature for SiC MOSFETs.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Green & Sustainable Science & Technology
Seok Min Choi, Ga Ram Lee, Chang Dae Park, Sung Hoon Cho, Byung Ju Lim
Summary: This study conducted numerical simulations to predict the wind loads on solar panels at different turbulence intensities and wind speeds. It was found that the first row of solar panels showed the highest drag and lift coefficients at different turbulence intensities, and the wind angle also had an impact on the drag and lift forces.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Physics, Applied
Rune Strandberg
Summary: When the quality of multi-junction solar cells reaches a certain level, the radiative exchange of photons between cells becomes crucial in accurately modeling such devices. This study demonstrates how transfer coefficients, which are constants, can be used to consider radiative coupling in series-connected multi-junction solar cells composed of several sub-cells following the single diode equation. The introduction of transfer coefficients enables the voltage-current relationship of the device to be expressed using a convenient closed-form expression that captures the general physics of radiatively coupled multi-junction cells, similar to how the single diode equation describes single-junction solar cells. The model also allows for easy calculation of the short circuit current and open circuit voltage of radiatively coupled multi-junction cells, with the potential to incorporate non-idealities.
APPLIED PHYSICS LETTERS
(2023)
Article
Construction & Building Technology
Huihui Zhao, Shuaiqi Wang, Yufeng Zhang, Lihua Zhao, Yongchao Zhai, Robert D. Brown, Ling Jin, Renzhi Wu
Summary: Walking promotes human health and well-being, but increasing temperatures due to climate change and urban heat islands pose challenges to urban walkability. This study investigates the thermal impacts of solar radiation on walking individuals and finds that thermal sensation varies depending on the direction of radiation.
BUILDING AND ENVIRONMENT
(2023)
Article
Materials Science, Multidisciplinary
Iman Gharibshahian, Ali A. Orouji, Samaneh Sharbati
Summary: The spike-like energy level alignment of Sb2Se3 absorber with a Zn(O,S) buffer layer is crucial for high efficiency solar cells. The distortions in the current-voltage characteristic in some Sb2Se3 solar cells with Zn(O,S) buffer layer are influenced by the junction barrier at Sb2Se3/Zn(O,S) interface. The presence of a large junction barrier at Sb2Se3/Zn(O,S) interface leads to distortions in J-V curves, which can be eliminated by adjusting carrier density, operating temperature, and sulfur content in Zn(O,S).
Article
Thermodynamics
Prateek Bandi, Neeraj Paul Manelil, M. P. Maiya, Shaligram Tiwari, A. Thangamani, J. L. Tamalapakula
Summary: The study investigates the thermal comfort of the driver in an automobile cabin under the influence of solar radiation and different cooling jet directions. Using simulations, it evaluates the effects of different variables such as vertical guide vane angles on the driver's thermal comfort and identifies the optimal guide vane angle for enhanced mixing and comfort.
APPLIED THERMAL ENGINEERING
(2022)
Article
Chemistry, Physical
Yuehua Hong, Xuefeng Zheng, Yunlong He, Zijian Yuan, Xiangyu Zhang, Fang Zhang, Hao Zhang, Xiaoli Lu, Xiaohua Ma, Yue Hao
Summary: NiOx/Ga2O3 heterostructure is widely used in Ga2O3 electronics devices for high power density and severe ambient temperature. The heat effect on band offsets in NiOx/Ga2O3 junction is investigated using in-situ temperature-dependent XPS characterization technique. The conduction band offset (Delta Ec) and valence band offset (Delta Ev) decrease with increasing temperature, indicating an advancement in suppression of band bending. The temperature dependence of I-V measurement of NiOx/Ga2O3 pn diode is also studied to verify the findings from XPS analysis. The work provides insights into interfacial properties and offers suggestions for designing Ga2O3 power electronics.
APPLIED SURFACE SCIENCE
(2023)
Article
Thermodynamics
Seok Min Choi, Chang-Dae Park, Sung-Hoon Cho, Byung-Ju Lim
Summary: In this study, the local pressure distributions on a solar panel array were experimentally measured and economic analysis was conducted. The results showed that the position of the panels affected the drag and lift coefficients. By using lower-cost materials, the manufacturing cost of floating photovoltaic systems can be reduced.
Article
Green & Sustainable Science & Technology
Fahad Al-Amri, Farooq Saeed, Muhammad Abdul Mujeebu
Summary: One of the major challenges in the PV industry is to effectively cool the PV panel during its operation. This study introduces a dual-function PV panel racking structure that acts as both a mechanical support and a heat sink. Numerical analysis and field experiments validate that the modified structure can reduce panel temperature and increase panel efficiency, resulting in a lower levelized cost of electricity.
Article
Chemistry, Physical
Duygu Akin Kara, Edmund K. Burnett, Koray Kara, Ozlem Usluer, Benjamin P. Cherniawski, Edward J. Barron, Burak Gultekin, Mahmut Kus, Alejandro L. Briseno
Summary: Single crystal studies provide a better understanding of the basic properties of organic photovoltaic devices. This work investigates the effects of different forms of rubrene (single crystal, polycrystalline, and amorphous) on the charge carrier recombination mechanism in organic solar cells. The results show that single crystal devices are less affected by trap assisted recombination compared to amorphous and polycrystalline devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Physics, Fluids & Plasmas
Elena A. Plis, Daniel P. Engelhart, Vanessa J. Murray, Alexey N. Sokolovskiy, David A. Barton, Dale C. Ferguson, Ryan C. Hoffman
Summary: The harsh space environment at geosynchronous orbit induces differential charging of spacecraft surfaces due to simultaneous fluxes of electrons, which can cause local discharges endangering the normal operation of satellites. This study focuses on evaluating the effects of electron radiation on material properties of commonly used space solar cell coverglasses.
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2021)
Article
Physics, Applied
Boris Chesca, Marat Gaifullin, Daniel John, Jonathan Cox, Sergey Savelev, Christopher Mellor
Summary: This study reports on the influence of preferential magnetic vortices motion on the inverse ac Josephson effect and the coherent operation of asymmetrical parallel arrays of YBa2Cu3O7-delta Josephson junctions. The results suggest that preferential vortex-flow has a significant impact on the coherent microwave operation of superconducting devices.
APPLIED PHYSICS LETTERS
(2022)
Article
Engineering, Manufacturing
Lingfeng Shao, Guoqing Xu, Yi Hu
Summary: The article introduces a method based on voltage-rise time and loss of power devices for detection and prediction of junction temperature. The model based on voltage-rise time and loss is verified to have good linearity, fixed sensitivity, and can provide nondestructive IGBT junction temperature extraction through theoretical analysis and simulation verification.
IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY
(2021)
Article
Physics, Condensed Matter
Asmaa Ibral, Asmaa Zouitine, El Mahdi Assaid, Hicham El Achouby, El Mustapha Feddi, Francis Dujardin
PHYSICA B-CONDENSED MATTER
(2015)
Article
Thermodynamics
H. El Achouby, M. Zaimi, A. Ibral, E. M. Assaid
ENERGY CONVERSION AND MANAGEMENT
(2018)
Article
Thermodynamics
M. Zaimi, H. El Achouby, O. Zegoudi, A. Ibral, E. M. Assaid
ENERGY CONVERSION AND MANAGEMENT
(2020)
Proceedings Paper
Green & Sustainable Science & Technology
M. Zaimi, H. El Achouby, A. Ibral, E. M. Assaid, M. S. El Maliki
PROCEEDINGS OF 2019 7TH INTERNATIONAL RENEWABLE AND SUSTAINABLE ENERGY CONFERENCE (IRSEC)
(2019)
Proceedings Paper
Green & Sustainable Science & Technology
Mhammed Zaimi, Hicham El Achouby, Asmaa Ibral, El Mahdi Assaid, Mohammed Salaheddine El Maliki, Rachid Saadani
2018 6TH INTERNATIONAL RENEWABLE AND SUSTAINABLE ENERGY CONFERENCE (IRSEC)
(2018)
Article
Energy & Fuels
Siddharth Sradhasagar, Omkar Subhasish Khuntia, Srikanta Biswal, Sougat Purohit, Amritendu Roy
Summary: In this study, machine learning models were developed to predict the bandgap and its character of double perovskite materials, with LGBMRegressor and XGBClassifier models identified as the best predictors. These models were further employed to predict the bandgap of novel bismuth-based transition metal oxide double perovskites, showing high accuracy, especially in the range of 1.2-1.8 eV.
Article
Energy & Fuels
Wei Shuai, Haoran Xu, Baoyang Luo, Yihui Huang, Dong Chen, Peiwang Zhu, Gang Xiao
Summary: In this study, a hybrid model based on numerical simulation and deep learning is proposed for the optimization and operation of solar receivers. By applying the model to different application scenarios and considering multiple performance objectives, small errors are achieved and optimal structure parameters and heliostat scales are identified. This approach is not only applicable to gas turbines but also heating systems.
Article
Energy & Fuels
Mubashar Ali, Zunaira Bibi, M. W. Younis, Muhammad Mubashir, Muqaddas Iqbal, Muhammad Usman Ali, Muhammad Asif Iqbal
Summary: This study investigates the structural, mechanical, and optoelectronic properties of the BaCuF3 fluoroperovskite using the first-principles modelling approach. The stability and characteristics of different cubic structures of BaCuF3 are evaluated, and the alpha-BaCuF3 and beta-BaCuF3 compounds are found to be mechanically stable with favorable optical properties for solar cells and high-frequency UV applications.
Article
Energy & Fuels
Dong Le Khac, Shahariar Chowdhury, Asmaa Soheil Najm, Montri Luengchavanon, Araa mebdir Holi, Mohammad Shah Jamal, Chin Hua Chia, Kuaanan Techato, Vidhya Selvanathan
Summary: A novel recycling system is proposed in this study to decompose and reclaim the constituent materials of organic-inorganic perovskite solar cells (PSCs). By utilizing a one-step solution process extraction approach, the chemical composition of each layer is successfully preserved, enabling their potential reuse. The proposed recycling technique helps mitigate pollution risks, minimize waste generation, and reduce recycling costs.
Article
Energy & Fuels
Peijie Lin, Feng Guo, Xiaoyang Lu, Qianying Zheng, Shuying Cheng, Yaohai Lin, Zhicong Chen, Lijun Wu, Zhuang Qian
Summary: This paper proposes an open-set fault diagnosis model for PV arrays based on 1D VoVNet-SVDD. The model accurately diagnoses various types of faults and is capable of identifying unknown fault types.