Article
Chemistry, Multidisciplinary
Xiaodong Li, Hui Yang, Acan Liu, Chunyan Lu, Haobo Yuan, Wenxiao Zhang, Junfeng Fang
Summary: The study proposes an iodine trapping strategy to inhibit the escape of iodine in perovskite and achieve operationally stable perovskite solar cells. This method can not only prevent the escape of iodine but also eliminate Pb0 defects in perovskite, improving the stability of the devices.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Ikram Anefnaf, Safae Aazou, Guy Schmerber, Aziz Dinia, Zouheir Sekkat
Summary: The combination of ZnO and PEIE as a cathode buffer layer has been shown to improve the efficiency of inverted polymer solar cells, especially with low-temperature solution processing. Among different molar ratios of ZAD and MEA, the ZnO (1:1)/PEIE cathode buffer layer demonstrated the highest power conversion efficiency.
Article
Chemistry, Physical
Bowei Li, Jun Deng, K. D. G. Imalka Jayawardena, Xueping Liu, Yuren Xiang, Aobo Ren, Abayomi Titilope Oluwabi, Steven Hinder, Benjamin Putland, John F. F. Watts, Hui Li, Shixuan Du, S. Ravi P. Silva, Wei Zhang
Summary: In order to understand the degradation pathway of perovskite solar cells (PSCs), an investigation on the extrinsic stability of inverted PSCs (IPSCs) was conducted. The long-term assessment revealed that the degraded power conversion efficiency was mainly caused by the fill factor and short-circuit current density, while the open-circuit voltage remained relatively stable. Absorbance evolution and density functional theory calculations further identified the perovskite rear-contact side, particularly the perovskite/fullerene interface, as the predominant degradation pathway. This study contributes to a better understanding of the aging mechanism and paves the way for enhanced durability of IPSCs in future applications.
Article
Chemistry, Physical
Luigi Angelo Castriotta, Emanuele Calabro, Francesco Di Giacomo, Sathy Harshavardhan Reddy, Daimiota Takhellambam, Barbara Paci, Amanda Generosi, Luca Serenelli, Francesca Menchini, Luca Martini, Mario Tucci, Aldo Di Carlo
Summary: Perovskite solar technology has gained attention in the last decade with efficiencies reaching up to 25.7%. However, the focus has been on performance rather than stability under stress conditions. In this study, researchers explored a universal strategy to enhance stability by using a combination of additives in the perovskite ink. The results showed significant improvements in efficiency and stability, with the modified solar cells retaining 95% efficiency after 1000 hours of light soaking and 100% efficiency after 1500 hours of stress.
Review
Chemistry, Physical
Yiwen Wang, Jinho Lee, Xueyan Hou, Chiara Labanti, Jun Yan, Eva Mazzolini, Amber Parhar, Jenny Nelson, Ji-Seon Kim, Zhe Li
Summary: While organic solar cells based on nonfullerene acceptors have achieved significant breakthroughs in their device performance, achieving long-term stability remains a major challenge for commercialization due to the lack of understanding of their degradation mechanisms and design rules for enhancing stability.
ADVANCED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Sadia Yasmeen, Yasir Qayyum Gill, Rabia Nazar, Umer Mehmood, Faisal Iqbal, Hooriya Qaswar, Zeeshan Ahmed
Summary: Conductive polymer blend gel electrolytes improve the stability of dyesensitized solar cells by reducing leakage and enhancing electrode adhesion. In this study, polyvinylpyrrolidone (PVP) and polyaniline (PANI) blends were synthesized through in-situ polymerization and characterized using various methods. The optimal composition of the electrolyte solution was selected, and the conductivity was found to be influenced by salt concentration. Solid-state dye-sensitized solar cells with gel electrolytes exhibited better long-term stability compared to conventional cells.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Green & Sustainable Science & Technology
Q. Song, J. Yoon, X. Liu, E. -C Lee
Summary: In this study, a small molecule, N-methyl-4-piperidone (NMPD), was used as an interfacial passivation filler between the perovskite and electron transport layers in inverted organic-inorganic hybrid CH3NH3PbI3 perovskite solar cells. The filler effectively reduced non-radiative charge recombination and improved electron extraction efficiency, resulting in an increased power conversion efficiency (PCE) and enhanced stability of the perovskite devices.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Chemistry, Physical
Sara Almenabawy, Yibo Zhang, Andrew Flood, Rajiv Prinja, Nazir P. Kherani
Summary: The usage of ultrathin flexible silicon foil can further extend the functionality of silicon in building and vehicle-integrated photovoltaics. In this study, inverted pyramid photonic crystals are carved on silicon to enhance its absorption of near-infrared light. The results show that a small mesa width of 35 nm can achieve high optical performance, and even after removing over 90% of the silicon from thick Si wafers, high optical absorption is still observed.
ACS APPLIED ENERGY MATERIALS
(2022)
Review
Chemistry, Physical
Yakun He, Ning Li, Thomas Heumueller, Jonas Wortmann, Benedict Hanisch, Anna Aubele, Sebastian Lucas, Guitao Feng, Xudong Jiang, Weiwei Li, Peter Baeuerle, Christoph J. Brabec
Summary: This article explores the industrial application value of bulk heterojunction (BHJ) organic solar cells (OSCs) and single-component OSCs (SCOSCs), including power conversion efficiency, photostability, and synthetic complexity. The results show that despite the slightly more complex synthesis, SCOSCs have higher industrial value and greater potential with increasing efficiency. Additionally, SCOSCs exhibit excellent photostability, making them a promising choice for industrial utilization.
Article
Chemistry, Physical
D. Saranin, S. Pescetelli, A. Pazniak, D. Rossi, A. Liedl, A. Yakusheva, L. Luchnikov, D. Podgorny, P. Gostischev, S. Didenko, A. Tameev, D. Lizzit, M. Angelucci, R. Cimino, R. Larciprete, A. Agresti, A. Di Carlo
Summary: This work demonstrates the beneficial role of MXene doping in NiO-based inverted perovskite solar cells, improving charge extraction and collection efficiency to achieve superior performance. The ability to finely tune MXene work function during chemical synthesis and modify optoelectronic properties of PSC layers as dopant opens up countless possibilities for engineering inverted PSC structures.
Article
Energy & Fuels
Zafar Arshad, Sehar Shakir, Asif Hussain Khoja, Ahad Hussain Javed, Mustafa Anwar, Abdur Rehman, Rahat Javaid, Umair Yaqub Qazi, Sarah Farrukh
Summary: The modified sol-gel method was used to synthesize Ca-doped TiO2 films as the electron transport material for perovskite solar cells. The study found that 2% Ca doping showed the highest conversion efficiency and nearly doubled the efficiency compared to pristine TiO2, along with an increase in current density.
Article
Materials Science, Multidisciplinary
Ding Yang, Rui Zhang, Yu Shi, Xia Guo, Maojie Zhang
Summary: In this study, a pseudo-planar heterojunction (PPHJ) active layer and an effective anti-reflective covering layer were utilized to improve the performance and average visible transmittance (AVT) of semitransparent organic solar cells (ST-OSCs), demonstrating a unique approach for enhancing both AVT and power-conversion efficiency (PCE).
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Materials Science, Ceramics
M. A. Vidales-Hurtado, A. I. Caudana-Campos, R. A. Mauricio-Sanchez, G. Mendez-Montealvo, F. Caballero-Briones, A. Mendoza-Galvan
Summary: The study investigates the thermo-reversible sol-gel transition in solutions made of titanium n-butoxide, ethanol, water, and nitric acid using in situ temperature-dependent Fourier transform infrared spectroscopy. It was found that the nitrate ion plays a key role in substituting ligands and forming bridges and chelates, leading to gel formation. The elastic component was identified as the most important in the material's structure based on dynamic rheological studies of the temperature-dependent viscoelastic behavior.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Energy & Fuels
Jingshuai Zhu, Guilong Cai, Peiyao Xue, Boyu Jia, Changxi Zhang, Xinhui Lu, Zhen Li, Xiaowei Zhan
Summary: The study investigates the effects of incorporating fused-ring electron acceptors IOIC2 or IOIC5 into the PM6:Y6 blend on the performance of organic solar cells. Both IOIC2 and IOIC5 improved the power conversion efficiency (PCE) of the OSCs. The impact of side chains in the third component on device performance was also examined.
Article
Chemistry, Multidisciplinary
Taeyoon Ki, Changhoon Lee, Jehan Kim, In-Wook Hwang, Chang-Mok Oh, Kiyoung Park, Sanseong Lee, Ju-Hyeon Kim, Chandran Balamurugan, Jaemin Kong, Hyeon-Seok Jeong, Sooncheol Kwon, Kwanghee Lee
Summary: This study demonstrates a novel strategy of eliminating problematic organic metal-binding ligands in TMO precursors through an anion-induced catalytic reaction (ACR) at room temperature, promoting the formation of a metal-oxygen network. The ACR-derived TMO thin film on top of a photoactive layer shows excellent electrical conductivity and work function tunability, leading to higher efficiency and longer stability in inverted device configurations.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Sarika Kumari, Jose G. Sanchez, Muhammad Imran, Ece Aktas, Dora A. Gonzalez, Liberato Manna, Eugenia Martinez-Ferrero, Emilio Palomares
Summary: This study reports the use of two carbazole-based self-assembled molecules as hole injecting materials in perovskite-based LEDs. The extra phenyl ring in the bridge of these molecules provides improved stability to the devices, surpassing the widely used polymer PTAA. Additionally, the efficiency of the devices is increased due to the structural and electronic characteristics of the self-assembled molecules.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Energy & Fuels
Johan J. Estrada-Lopez, Javier Vazquez-Castillo, Andrea Castillo-Atoche, Edith Osorio-de-la-Rosa, Julio Heredia-Lozano, Alejandro Castillo-Atoche
Summary: Intelligent sensing systems based on edge-computing are crucial for IoT and Agriculture 4.0 applications. Developing wireless sensing systems that utilize edge-computing improves accuracy in soil sensing and data interpretation. The challenge is to sustainably power the wireless sensing system with alternative energy sources, such as plant microbial fuel cells, and this study aims to develop a solution using a forage-grass-power fuel cell for an IoT LoRa network. The experiment demonstrates the feasibility of utilizing the plant microbial fuel cell for soil monitoring with sustainable energy generation and transmission capabilities.
Article
Chemistry, Multidisciplinary
Jaime Ortegon-Aguilar, Alejandro Castillo-Atoche, Guillermo Becerra-Nunez, Johan Jair Estrada-Lopez, Edith Osorio-de-la-Rosa, Roberto Carrasco-Alvarez, Asim Datta, Javier Vazquez-Castillo
Summary: Precision medicine is expanding to include internet-of-wearable-things (IoWT) applications. To process large amounts of data in real time, novel systems and digital signal processing algorithms are needed. However, this leads to increased power consumption in IoWT systems. A proposed solution is to develop energy-aware techniques using low-power machine learning algorithms.
APPLIED SCIENCES-BASEL
(2023)
Article
Computer Science, Hardware & Architecture
Rosa M. Woo-Garcia, V. Herrera-Nevraumont, E. Osorio-de-la-Rosa, S. E. Vazquez-Valdes, F. Lopez-Huerta
Summary: A monitoring and locating system for sailboats has been developed using GPRS/GSM and GPS technology. This system can track the location of sailboats that stay within 10 km of the coast. It utilizes a GPS module to obtain boat coordinates and includes a sensing station for environmental measurements and ship movement. Data received via AVR-GPRS is stored in a SQL database. System monitoring tests were conducted on a 24-km sailboat route along the coast of the Atlantic Ocean and Gulf of Mexico.
IEEE EMBEDDED SYSTEMS LETTERS
(2023)
Article
Energy & Fuels
Alfonsina Abat Amelenan Torimtubun, Maria Mendez, Enas Moustafa, Josep Pallares, Emilio Palomares, Lluis F. Marsal
Summary: A ternary strategy using nonfullerene acceptor ITIC-M and fullerene acceptor PC70BM as third components with the binary blend of PM6:Y7 has been demonstrated to improve the power conversion efficiency (PCE) of organic solar cells. The higher LUMO of the guest acceptors can enhance the open-circuit voltage and reduce energy loss and charge recombination. The good miscibility between the components facilitates efficient exciton dissociation and electron transport, leading to improved short-circuit current density and fill factor.
Article
Nanoscience & Nanotechnology
Alejandro Rojas Gomez, Laura K. Acosta, Josep Ferre-Borrull, Abel Santos, Lluis F. Marsal
Summary: Gold-coated gradient-index filters based on nano-porous anodic alumina were studied to investigate the properties and applications of Tamm plasmons. The quality factor of Tamm resonance can be improved by tuning the features of the dielectric mirror and the thickness of the porous gold coating layer. The Tamm resonances in Au-coated NAA-GIFs are weak due to the narrow bands of the photonic crystal structures, but become better resolved and more intense after broadening of the photonic stopband. The hybrid Tamm porous system provides a nanoporous structure that can be readily tailored for various photonic technologies.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Agustin O. Alvarez, Ferdinand Ledee, Marise Garcia-Batlle, Pilar Lopez-Varo, Eric Gros-Daillon, Javier Mayen Guillen, Jean-Marie Verilhac, Thibault Lemercier, Julien Zaccaro, Lluis F. Marsal, Germa Garcia-Belmonte, Osbel Almora
Summary: Research on metal halide perovskites as absorbers for X-ray detection is important due to their optimal optoelectronic properties. However, the contact degradation and long-term instability of the current limit device performance, which is related to the dual electronic-ionic conductivity of perovskites. The study characterizes the long-term dark current and photocurrent of methylammonium-lead bromide (MAPbBr(3)) samples under X-ray incidence, revealing the influence of large ionic-related built-in fields on charge kinetics and suggesting a method to estimate ionic mobility and concentration.
ACS PHYSICAL CHEMISTRY AU
(2023)
Article
Chemistry, Multidisciplinary
Jorge Labella, Jose Garcia-Calvo, Magaly Ramirez-Como, Josep Pallares, Lluis F. F. Marsal, Tomas Torres
Summary: Imide-based Subphthalocyanines (SubPcs) have been synthesized and their photovoltaic performance as non-fullerene acceptors in organic solar cells has been studied. The introduction of PMI units results in a red-shifted absorption, combining the absorption properties of SubPc and PMIs fragments.
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES
(2023)
Article
Materials Science, Multidisciplinary
Pilar Formentin, Laura K. Acosta, Lluis F. Marsal
Summary: Hydrophobic/oleophilic nanoporous anodic alumina substrates were fabricated using a two-step anodization method and chemically modified with 1H, 1H, 2H, 2H-perfluorooctyltrichlorosilane (FOTS). The surface morphology was characterized using scanning electron microscopy, and the influence of surface topography and pore size on contact angle measurements with different solvents was studied. The results showed that the water repellence capacity of the nanoporous structure depended on the pore diameter, but there was a critical value beyond which the water contact angle decreased. Chemical modification eliminated this effect and the porous topography did not enhance oleophilicity. Non-porous surfaces exhibited lower contact angles compared to the structured surfaces when tested with different solvents. These findings can be used to design desired wettability properties, as modified nanoporous anodic alumina exhibited hydrophobicity and permeability for solvents with low surface tension.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Physics, Multidisciplinary
Agustin O. Alvarez, Antonio J. Riquelme, Rosinda Fuentes-Pineda, Elena Mas-Marza, Lluis F. Marsal, Osbel Almora, Juan A. Anta, Francisco Fabregat-Santiago
Summary: Light intensity modulated photocurrent and photovoltage spectroscopies, IMPS and IMVS respectively, are characterization techniques for studying charge carrier transport and recombination properties of photosensitive samples. An analysis is presented on the unusual low-frequency response of IMPS and IMVS which appears for some light sources at high illumination intensities. A protocol for detecting the modulation of electroluminescence is proposed, combining the simultaneous use of the IMPS of a reference photodiode and the impedance spectroscopy of the light source. Discerning whether these low-frequency signal 'tails' are due to the measurement setup or the sample is of major importance to avoid misinterpretations in any study, especially for perovskite solar cells.
Article
Biotechnology & Applied Microbiology
Matthieu Renaud, Philippe Bousquet, Gerard Macias, Gael Y. Rochefort, Jean-Olivier Durand, Lluis F. Marsal, Frederic Cuisinier, Frederique Cunin, Pierre-Yves Collart-Dutilleul
Summary: Currently, bone regeneration techniques using biomaterials have limited efficiency. Tissue engineering combining biomaterials and stem cells is an important avenue of development to improve bone regeneration. In this study, the use of porous silicon (pSi) particles carrying dental pulp stem cells (DPSC) was found to promote greater bone formation in vivo.
BIOENGINEERING-BASEL
(2023)
Article
Nanoscience & Nanotechnology
Panthihage Ruvini L. Dabare, Akash Bachhuka, Jing Yang Quek, Lluis F. F. Marsal, John Hayball, Krasimir Vasilev
Summary: It has been shown that macrophage polarization can be regulated by modifying the surface features of biomaterials, and this effect can be maintained over a prolonged period. In this study, differentiated THP-1 cells were used to control macrophage polarization on nano-rough surfaces for 7 days. The results demonstrate that regardless of surface roughness, the expression of pro-inflammatory cytokines decreases while the expression of anti-inflammatory cytokines increases, and the predominant cell type on the modified surfaces exhibits an M2 anti-inflammatory phenotype.
Article
Chemistry, Physical
Magaly Ramirez-Como, Enas Moustafa, Mohamed Samir, Alfonsina Abat Amelenan Torimtubun, Jose G. Sanchez, Josep Pallares, Lluis F. Marsal
Summary: Organic solar cells (OSCs) have high efficiency but low long-term stability. This study investigated the degradation of non-fullerene solar cells (NFA-OSCs) based on PM6:Y7. The degradation analysis revealed that the drop in open circuit voltage (V-OC) is the main cause. Encapsulated devices and devices exposed to N-2 atmosphere had longer T-80 lifetimes compared to non-encapsulated devices.
SUSTAINABLE ENERGY & FUELS
(2023)
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.
