Article
Chemistry, Physical
Yunpeng Qin, Nrup Balar, Zhengxing Peng, Abay Gadisa, Indunil Angunawela, Anirban Bagui, Somayeh Kashani, Jianhui Hou, Harald Ade
Summary: Organic photovoltaic technology has achieved high power conversion efficiency, but achieving long-term stability is crucial. Research has identified a structure-T-g framework for BTP acceptors and shown that PC71BM can improve stability under certain conditions.
Article
Chemistry, Physical
Seonghoon Jeong, Seung Sik Ham, Eun Pyung Choi, David J. Hwang, Hyeonggeun Yu, Won Mok Kim, Gee Yeong Kim, Jeung-hyun Jeong
Summary: Cu(In,Ga)Se2 (CIGS) is a promising candidate for flexible photovoltaics due to its high efficiency and flexibility. However, achieving high-efficiency CIGS solar cells on a flexible polyimide (PI) substrate is challenging. In this study, we applied indium tin oxide (ITO) instead of Mo as a back-contact (BC) layer to obtain crack-free CIGS modules with superior device performance. The ITO BC-based cells show potential for achieving high-efficiency and flexible CIGS solar modules.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Energy & Fuels
Alban Lafuente-Sampietro, Katsuhisa Yoshida, Shenghao Wang, Shogo Ishizuka, Hajime Shibata, Nobuyuki Sano, Katsuhiro Akimoto, Takeaki Sakurai
Summary: In this article, the effect of the double grading in a CIGS absorber is studied from the carrier perspective. It is found that finding the ideal notch position to maximize carrier collection while minimizing recombination rate is a compromise process.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Chemistry, Multidisciplinary
Rong Deng, Pablo Ribeiro Dias, Marina Monteiro Lunardi, Jingjia Ji
Summary: Proper disposal of photovoltaic modules has become an emerging environmental and social issue, with the decommissioning volume set to increase significantly by 2030. Recycling high-purity silicon and silver from end-of-life solar cells can greatly improve recycling revenue. The development of an environmentally sustainable chemical process can efficiently recover these valuable materials in an environmentally friendly manner.
Article
Energy & Fuels
Takeshi Tayagaki, Ayumi Sasaki, Shogo Ishizuka, Masahiro Yoshita
Summary: This article investigates the effect of shunt resistances on the performance of curved thin-film photovoltaic (PV) modules. It finds that low shunt resistance can reduce current mismatch and power loss, and enhance module durability.
IEEE JOURNAL OF PHOTOVOLTAICS
(2022)
Article
Energy & Fuels
Giovan Battista Cavadini, Lauren M. Cook
Summary: The study shows that in a flat rooftop PV installation near Zurich, Switzerland, green roofs can increase annual PV energy yield by 1.8% on average compared to conventional roofs, while cool roofs can increase it by 3.4%. Results indicate that cool roofs outperform green roofs in terms of boosting PV energy yield.
Article
Energy & Fuels
Zain ul Abdin, Irfan Qasim, Owais Ahmad, Muhammad Rashid
Summary: Perovskite solar cells are cost-effective and stable in the global photovoltaic industry, with unique electronic and optical properties. Numerical investigations in this study designed novel solar cell configurations and optimized performance, exploring the impact of various electron transport materials on efficiency.
Article
Energy & Fuels
Veronika Nikitina, Christian Reichel, Denis Erath, Simon Kirner, Alexei Richter, Torsten Roessler, Angela De Rose, Achim Kraft, Holger Neuhaus
Summary: This study focuses on whether shingling can be a suitable interconnection method for perovskite-silicon tandem (PVST) cells. The simulation and prototype production confirmed the potential of shingle modules to achieve high efficiencies.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Chemistry, Physical
Jeremy Dumoulin, Emmanuel Drouard, Mohamed Amara
Summary: Radiative sky cooling is a promising method for passively cooling photovoltaic cells, with potential for temperature reduction and power enhancement. A numerical model based on detailed-balance theory allows for estimation of temperature and electrical power output for different cells. The study highlights the benefits of a broadband emissivity profile over a selective one, and discusses material-specific effects on thermal management.
SUSTAINABLE ENERGY & FUELS
(2021)
Article
Materials Science, Multidisciplinary
Serap Yigit Gezgin
Summary: In this study, ultrathin Ag/CIGS/n-Si/Al solar cells were prepared using the Pulse Laser Deposition (PLD) method, and the effect of CIGS ultrathin film thickness on the photo current was investigated. The results showed that increasing the laser ablation pulse number improved the crystallinity and photon absorption of the CIGS ultrathin films, but decreased the ratios of indium and gallium while increasing the ratios of copper and selenium.
Article
Green & Sustainable Science & Technology
Shayan Umar, Adeel Waqas, Waqas Tanveer, Nadia Shahzad, Abdul Kashif Janjua, Maziar Dehghan, Muhammad Salik Qureshi, Sehar Shakir
Summary: This study investigates the effect of dew on dust and proposes an automated water-based cleaning system for PV modules. Results show that the cleaning system effectively removes dew-induced dust and has a cooling effect on the modules. Financial evaluation indicates that the system is feasible for both domestic and commercial PV systems.
Article
Chemistry, Physical
Congmeng Li, Haitian Luo, Hongwei Gu, Hui Li
Summary: In this study, a BaTiO3 layer was inserted to improve the power conversion efficiency (PCE) of CIGS solar cells. The performances of BTO-coupled CIGS solar cells with different device structures were systematically studied, and the working mechanism was proposed. The results showed that the BTO-coupled CIGS solar cell with the device structure of Mo/CIGS/CdS/BTO/AZO had the highest PCE of 24.53% and an open-circuit voltage of 931.70 mV. This suggests that combining a ferroelectric material with p-n junction materials is a novel strategy for improving the efficiency of solar cells.
Review
Chemistry, Physical
V. A. Panchenko, A. A. Kovalev, D. A. Kovalev, Yu. V. Litty
Summary: The article introduces various methods and technologies for utilizing solar energy in anaerobic bioconversion systems. It discusses different conversion methods of solar radiation, including direct use, photovoltaic, thermal, photovoltaic thermal, and concentrating. The article proposes schemes for incorporating solar energy converters into anaerobic bioconversion systems and explores various solar radiation converters for heat and electricity supply. The suggested systems and designs will reduce the reliance on thermal energy and make anaerobic bioconversion systems more cost-effective and efficient in operation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Yeon Hyang Sim, Min Ju Yun, Luthfan Fauzan, Hyekyoung Choi, Dong Yoon Lee, Seung I. Cha
Summary: As the installation of photovoltaics near urban areas increases, the proposed model can predict the performance of solar cells in urban environments. It can also serve as a tool for optimizing the design of indoor solar cells.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Green & Sustainable Science & Technology
Christian Stefano Schuster, Mehmet Koc, Selcuk Yerci
Summary: This study presents an analytical approach for calculating the power output of multi-junction solar cells and compares their performance under different climatic conditions. The results show that independently connected junctions offer the greatest flexibility and potential for harvesting efficiency.
Article
Energy & Fuels
F. Larsson, O. Donzel-Gargand, J. Keller, M. Edoff, T. Torndahl
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2018)
Article
Materials Science, Multidisciplinary
Dorothea Ledinek, Jan Keller, Carl Hagglund, Wei-Chao Chen, Marika Edoff
Article
Energy & Fuels
Jose M. V. Cunha, Tomas S. Lopes, Sourav Bose, Adam Hultqvist, Wei-Chao Chen, Olivier Donzel-Gargand, Rodrigo M. Ribeiro, Antonio J. N. Oliveira, Marika Edoff, Paulo A. Fernandes, Pedro M. P. Salome
IEEE JOURNAL OF PHOTOVOLTAICS
(2019)
Article
Energy & Fuels
Louis Gouillart, Wei-Chao Chen, Andrea Cattoni, Julie Goffard, Lars Riekehr, Jan Keller, Marie Jubault, Negar Naghavi, Marika Edoff, Stephane Collin
IEEE JOURNAL OF PHOTOVOLTAICS
(2020)
Article
Materials Science, Multidisciplinary
Faraz Khavari, Jan Keller, Jes K. Larsen, Kostiantyn V. Sopiha, Tobias Torndahl, Marika Edoff
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2020)
Article
Energy & Fuels
Louis Gouillart, Andrea Cattoni, Wei-Chao Chen, Julie Goffard, Lars Riekehr, Jan Keller, Marie Jubault, Negar Naghavi, Marika Edoff, Stephane Collin
Summary: The research investigates the design of ohmic and reflective back contacts for ultrathin CIGS solar cells, improving efficiency and short-circuit current density by carefully analyzing diffusion mechanisms and reactions in the interfaces and CIGS layer, addressing the detrimental reaction between CIGS and the top ITO layer.
PROGRESS IN PHOTOVOLTAICS
(2021)
Article
Energy & Fuels
Maximilian Krause, Jose A. Marquez, Sergej Levcenco, Thomas Unold, Olivier Donzel-Gargand, Marika Edoff, Daniel Abou-Ras
Summary: The KF post-deposition treatment can increase Voc by removing Cu-poor, Ag-poor, and Ga-rich regions near the ACIGSe/CdS interface. However, an excessive KF dose may lead to the formation of Cu-poor and K-rich regions near the interface, resulting in a decrease in Voc.
PROGRESS IN PHOTOVOLTAICS
(2022)
Article
Materials Science, Multidisciplinary
Faraz Khavari, Nishant Saini, Jan Keller, Jes K. Larsen, Kostiantyn Sopiha, Natalia M. Martin, Tobias Torndahl, Charlotte Platzer Bjorkman, Marika Edoff
Summary: A new method of sulfur grading in CuInSe2 thin-film solar absorbers is proposed by introducing an ultrathin sacrificial CuInS2 layer. The sulfur grading phenomenon is observed in the Se- and SeS-treated samples, and the formation of mixed CuIn(S,Se)2 phase is confirmed. The treated bilayer samples show higher optical bandgap and V-OC, but exhibit lower efficiency due to the blocking effect of internal electron barrier.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2022)
Article
Energy & Fuels
Kevin Oliveira, Jennifer P. Teixeira, Wei-Chao Chen, Jackson Lontchi Jioleo, Antonio J. N. Oliveira, Ihsan Caha, Leonard Deepak Francis, Denis Flandre, Marika Edoff, Paulo A. Fernandes, Pedro M. P. Salome
Summary: In this study, SiO$_x$ passivation based substrates were developed and integrated into ultrathin Cu(In,Ga)Se$_2$ (CIGS) solar cells to investigate the impact of SiO$_x$ layer thickness on the device performance. Experimental study and optical/electrical simulations were conducted to decouple the optical and electronic gains of the SiO$_x$ layer, allowing for a detailed analysis of its effect on the CIGS solar cell performance. The results showed that an increase in passivation layer thickness led to a rise in parasitic losses, indicating the importance of finding a balance between beneficial passivation and optical effects with harmful architectural constraints to achieve optimal solar cell performance.
IEEE JOURNAL OF PHOTOVOLTAICS
(2022)
Article
Chemistry, Multidisciplinary
Jes K. Larsen, Kostiantyn Sopiha, Clas Persson, Charlotte Platzer-Bjorkman, Marika Edoff
Summary: This contribution investigates the stable and metastable phases forming in CuInS2 (CIS) thin films, which has gained renewed interest due to its potential application in tandem solar cells. The study utilizes a combined theoretical and experimental approach, including ab initio calculations, X-ray diffraction (XRD) patterns, and Raman spectra analysis. Multiple CIS structures with different lattices are identified, and their XRD/Raman patterns are shown to have overlapping features. Thin films with different compositions are synthesized, and it is found that several CIS polymorphs are formed. Additionally, CuIn5S8 and NaInS2 compounds accommodating In-excess are found alongside the CIS polymorphs. The study emphasizes the importance of tight composition control for stabilizing the metastable polymorphs.
Article
Physics, Condensed Matter
Patrick Pearson, Jan Keller, Lars Stolt, Marika Edoff, Charlotte Platzer Bjorkman
Summary: The effect of composition on the stability of (Ag, Cu)(In, Ga)Se-2 solar cells with different stoichiometry values was assessed. It was found that the depletion width strongly depends on the stoichiometry value, and can be greatly varied through light-soaking and dry-heat treatments. The device performance, particularly the current output, shows a stoichiometry dependence and is significantly affected after each round of treatment.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2022)
Editorial Material
Energy & Fuels
Marika Edoff
Summary: Researchers demonstrate a high-power output bifacial solar cell that can harvest sunlight from both sides and improve the efficiency of power generation.
Article
Chemistry, Physical
Kostiantyn Sopiha, Jes K. Larsen, Jan Keller, Marika Edoff, Charlotte Platzer-Bjorkman, Jonathan J. S. Scragg
Summary: This study evaluates the tolerance to off-stoichiometry of thin-film photovoltaic materials in the I-III-VI systems, identifies two empirical principles for recognizing solar energy materials with high tolerance to off-stoichiometry, and discusses practical implications for the deposition of I-III-VI absorbers based on computational results and experimental findings.
FARADAY DISCUSSIONS
(2022)
Article
Energy & Fuels
Jackson Lontchi, Maria Zhukova, Milan Kovacic, Janez Krc, Wei-Chao Chen, Marika Edoff, Sourav Bose, Pedro M. P. Salome, Julie Goffard, Andrea Cattoni, L. Gouillart, Stephane Collin, Viktoria Gusak, Denis Flandre
IEEE JOURNAL OF PHOTOVOLTAICS
(2020)
Article
Chemistry, Physical
Kostiantyn Sopiha, Jes K. Larsen, Olivier Donzel-Gargand, Faraz Khavari, Jan Keller, Marika Edoff, Charlotte Platzer Bjorkman, Clas Persson, Jonathan J. S. Scragg
JOURNAL OF MATERIALS CHEMISTRY A
(2020)