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Advances in Emerging Solar Cell Technologies

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A2: Solar Energy and Photovoltaic Systems".

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 5132

Special Issue Editor


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Guest Editor
School of Chemistry and Molecular Biosciences, Faculty of Science, The University of Queensland, Brisbane, QLD 4072, Australia
Interests: solar cells; photovoltaics; nanotechnology; 2D materials

Special Issue Information

Dear Colleagues,

Solar energy is considered one of the most promising energy sources that is capable of meeting our rapidly growing energy demand due to its cleanliness, sustainability, and effectiveness. To date, intensive efforts have been made to develop efficient, stable, and low-cost photovoltaic (PV) devices. This has resulted in various types of emerging solar cells, such as organic solar cells, dye-sensitized solar cells, quantum dot solar cells, and perovskite solar cells, being introduced as suitable alternatives to replace the expensive silicon-based solar cells that are currently dominating the PV market. Despite this excellent progress, there is still plenty of room to further improve the performance, scalability, and long-term stability of those cutting-edge systems.

This Special Issue on “Advances in Emerging Solar Cell Technologies” is dedicated to highlighting the recent advances made in the development of state-of-the-art photovoltaic technologies. Original research articles based on theoretical/experimental studies and critical reviews are highly welcomed.

Dr. Abdulaziz Bati
Guest Editor

Manuscript Submission Information

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Keywords

  • solar cells
  • photovoltaic materials
  • upscaling
  • fabrication
  • characterization

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Published Papers (2 papers)

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Research

34 pages, 6868 KiB  
Article
Double-Slope Solar Still Productivity Based on the Number of Rubber Scraper Motions
by Ali O. Al-Sulttani, Amimul Ahsan, Basim A. R. Al-Bakri, Mahir Mahmod Hason, Nik Norsyahariati Nik Daud, S. Idrus, Omer A. Alawi, Elżbieta Macioszek and Zaher Mundher Yaseen
Energies 2022, 15(21), 7881; https://doi.org/10.3390/en15217881 - 24 Oct 2022
Cited by 1 | Viewed by 1767
Abstract
In low-latitude areas less than 10° in latitude angle, the solar radiation that goes into the solar still increases as the cover slope approaches the latitude angle. However, the amount of water that is condensed and then falls toward the solar-still basin is [...] Read more.
In low-latitude areas less than 10° in latitude angle, the solar radiation that goes into the solar still increases as the cover slope approaches the latitude angle. However, the amount of water that is condensed and then falls toward the solar-still basin is also increased in this case. Consequently, the solar yield still is significantly decreased, and the accuracy of the prediction method is affected. This reduction in the yield and the accuracy of the prediction method is inversely proportional to the time in which the condensed water stays on the inner side of the condensing cover without collection because more drops will fall down into the basin of the solar-still. Different numbers of scraper motions per hour (NSM), that is, 1, 2, 3, 4, 5, 6, and 7, are implemented to increase the hourly yield of solar still (HYSS) of the double-slope solar still hybrid with rubber scrapers (DSSSHS) in areas at low latitudes and develop an accurate model for forecasting the HYSS. The proposed model is developed by determining the best values of the constant factors that are associated with NSM, and the optimal values of exponent (n) and the unknown constant (C) for the Nusselt number expression (Nu). These variables are used in formulating the models for estimating HYSS. The particle swarm optimization (PSO) algorithm is used to solve the optimization problem, thereby determining the optimal yields. Water that condensed and accumulated inside the condensing glass cover of the DSSSHS is collected by increasing NSM. This process increases in the specific productivity of DSSSHS and the accuracy of the HYSS prediction model. Results show that the proposed model can consistently and accurately estimate HYSS. Based on the relative root mean square error (RRMSE), the proposed model PSO–HYSS attained a minimum value (2.81), whereas the validation models attained Dunkle’s (78.68) and Kumar and Tiwari’s (141.37). Full article
(This article belongs to the Special Issue Advances in Emerging Solar Cell Technologies)
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18 pages, 1955 KiB  
Article
Machine Learning Analysis on the Performance of Dye-Sensitized Solar Cell—Thermoelectric Generator Hybrid System
by Zoltan Varga and Ervin Racz
Energies 2022, 15(19), 7222; https://doi.org/10.3390/en15197222 - 1 Oct 2022
Cited by 17 | Viewed by 2662
Abstract
In cases where a dye-sensitized solar cell (DSSC) is exposed to light, thermal energy accumulates inside the device, reducing the maximum power output. Utilizing this energy via the Seebeck effect can convert thermal energy into electrical current. Similar systems have been designed and [...] Read more.
In cases where a dye-sensitized solar cell (DSSC) is exposed to light, thermal energy accumulates inside the device, reducing the maximum power output. Utilizing this energy via the Seebeck effect can convert thermal energy into electrical current. Similar systems have been designed and built by other researchers, but associated tests were undertaken in laboratory environments using simulated sunlight and not outdoor conditions with methods that belong to conventional data analysis and simulation methods. In this study four machine learning techniques were analyzed: decision tree regression (DTR), random forest regression (RFR), K-nearest neighbors regression (K-NNR), and artificial neural network (ANN). DTR algorithm has the least errors and the most R2, indicating it as the most accurate method. The DSSC-TEG hybrid system was extrapolated based on the results of the DTR and taking the worst-case scenario (node-6). The main question is how many thermoelectric generators (TEGs) are needed for an inverter to operate a hydraulic pump to circulate water, and how much area is required for that number of TEGs. Considering the average value of the electric voltage of the TEG belonging to node-6, 60,741 pieces of TEGs would be needed, which means about 98 m2 to circulate water. Full article
(This article belongs to the Special Issue Advances in Emerging Solar Cell Technologies)
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