Article
Chemistry, Physical
Metwally Madkour
Summary: In this study, CuxO thin films were successfully prepared using ultrasonic spray pyrolysis with a single coordinated organic source as the precursor. Various operational parameters were investigated, and the precursor and thin films were characterized using multiple techniques. By optimizing the deposition temperature, different compositions of CuxO thin films were obtained, and a heterostructured photocatalyst of CuO/Cu2O thin film exhibited enhanced photocatalytic activity with low recombination rates and improved charge assembly.
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Victor V. Petrov, Irina O. Ignatieva, Maria G. Volkova, Irina A. Gulyaeva, Ilya V. Pankov, Ekaterina M. Bayan
Summary: Transparent Al-doped ZnO films were synthesized by solid-phase pyrolysis and characterized by XRD, SEM, and TEM. The films exhibit wurtzite structure and have a uniform distribution of nanoparticles. The introduction of 1% Al results in a narrowed band gap and improved response time to radiation.
Article
Chemistry, Physical
Tingting Wang, Bingguo Xue, Hao Cui, Yingying Zhang, Manmen Liu, Jialin Chen, Ming Wen, Wei Wang, Xudong Sun, Shaohong Liu
Summary: LuAG:Ce is an important color converter in the white lighting industry, with LuAG:Ce film offering advantages such as efficient heat dissipation and rare earth conservation. The preparation process and photoluminescence performance of LuAG:Ce film were investigated, showing that increasing Ce3+ doping concentration enhanced the emission intensity. By coupling Ce3+ doped LuAG:Ce film with a blue laser, white light emission was successfully achieved.
Article
Materials Science, Multidisciplinary
S. P. Bharath, Kasturi V. Bangera
Summary: Aluminum-doped zinc oxide (AZO) thin films with varying doping concentrations were synthesized using spray pyrolysis technique, showing significant effects on grain size, electrical properties, and gas-sensing characteristics. Various characterization techniques were adopted to study the material formation and performance.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
S. Kurtaran, M. Kellegoz, S. Kose
Summary: CeO2 thin films doped with Gd through spray pyrolysis technique exhibit enhanced optical, structural, and electrical properties, showing high transmittance and promising photoluminescence characteristics. These films may be considered as potential materials for optoelectronic applications.
Article
Physics, Condensed Matter
V. Doni Pon, K. S. Joseph Wilson, K. Hariprasad, V Ganesh, H. Elhosiny Ali, H. Algarni, I. S. Yahia
Summary: In this study, pure and Al-doped ZnO thin films were deposited on glass substrates using a cost-effective nebulizer spray technique. The structural, optical, and electrical properties of the thin films were investigated, with the 1% Al-doped ZnO thin film showing the best photodetection performance, making it a promising candidate for photodetector applications.
SUPERLATTICES AND MICROSTRUCTURES
(2021)
Article
Engineering, Electrical & Electronic
Beyza Tonbul, Hilal Aybike Can, Tayfur Ozturk, Hasan Akyildiz
Summary: The study aimed to tailor the properties of AZO thin films for transparent heater applications, investigating the effects of various parameters on the microstructure, electrical, optical properties, and heating/deicing behaviors of the films. The optimized heater showed good sheet resistance and transmittance, with a maximum achievable surface temperature of 76 degrees C and efficient ice/water removal. The AZO heater exhibited high thermal resistance and stable and reversible heating behavior.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Iping Suhariadi, Yudi Rahmawan, Diva A. M. Muyassiroh, Muhammad A. Barrinaya, Jaka F. Fatriansyah
Summary: A single-phase CuAl2O4 thin film with porous microstructure was successfully synthesized at a low temperature using ultrasonic spray pyrolysis method. The synthesized film showed good photocatalytic performance in decomposing methylene blue dye under solar irradiation.
Article
Materials Science, Multidisciplinary
Basavaraj G. Hunashimarad, J. S. Bhat, P. Raghavendra, R. F. Bhajantri
Summary: The photoluminescence properties of spray pyrolyzed strontium (Sr) doped tin oxide (SnO2:Sr) thin films are greatly influenced by Sr doping, leading to a redshift in optical bandgap and an increase in visible emission intensity.
Article
Chemistry, Physical
Zelong Li, Jianmin Song, Xiaochen Duan, Hanhan Wu, Ningning Lian, Junming Xue, Xudong Meng, Fu Yang, Junjie Li, Yanfeng Wang
Summary: F and Al co-doped ZnO (FAZO) films were prepared using ultrasonic spray pyrolysis and rapid thermal annealing treatment, with the influence of substrate temperature (Ts) on the films' properties systematically studied. The results showed changes in structure, morphology, electrical, and optical properties with increasing Ts, with the film prepared at 480 degrees C exhibiting the best photoelectric characteristics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Abeer Salah, Ahmed M. Saad, Ahmed A. Aboud
Summary: The pure and Co-doped ZnO thin films were studied with different levels of Co doping. The grain size increased with Co doping, optical band gap showed changes, and the dispersion transitioned from anomalous to normal upon Co doping. The doped materials exhibited reverse saturable absorption and negative nonlinear refraction.
Article
Materials Science, Multidisciplinary
Sema Kurtaran
Summary: ZnO:Al films were produced using ultrasonic spray pyrolysis technique and annealed at different times, showing significant impact of annealing time on optical, structural, electrical and surface properties. This study highlights the importance of optimizing annealing time for enhanced performance of ZnO:Al films in various applications.
Article
Engineering, Electrical & Electronic
Anurag Kumar, Deepak Kumar Gorai, Md. Imteyaz Ahmad
Summary: Solution-processed ZnO-based TCOs have higher resistivity and lower transparency compared to vapour-based techniques due to defects, lack of preferred orientation, partial segregation of dopants, and impurities. However, quick radiative annealing in a 5%H-2+Ar atmosphere can significantly improve the properties of the thin films, including reducing resistivity, increasing transparency, and improving crystallinity. This process also passivates defects and grain boundaries, resulting in better mobility and transparency.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
E. Nurfani, A. Lailani, W. A. P. Kesuma, M. S. Anrokhi, G. T. M. Kadja, M. Rozana
Summary: The study investigates the influence of Fe doping on the structural and photosensitivity properties of ZnO thin films. It was found that Fe doping decreases crystallinity and crystallite size while increasing interplanar spacing and strain. Additionally, Fe doping significantly enhances photocurrent and UV sensitivity of ZnO thin films, making them more suitable for UV photodetection applications.
Article
Energy & Fuels
Fu Yang, Jianmin Song, Xiaoyang Chen, Xi Lu, Jianhang Li, Qianqian Xue, Bin Han, Xudong Meng, Junjie Li, Yanfeng Wang
Summary: In this study, ultrasonic spray pyrolysis technology was used to deposit F, Cl, Al, and Ga co-doped ZnO films under normal pressure conditions. The influence of substrate temperature on the morphology, structure, and electrical properties of the films was investigated. The results showed that with increasing substrate temperature, the crystal structure and carrier concentration of the films changed, leading to a decrease followed by an increase in resistivity.
Article
Nanoscience & Nanotechnology
Maged Abdelsamie, Tianyang Li, Finn Babbe, Junwei Xu, Qiwei Han, Volker Blum, Carolin M. Sutter-Fella, David B. Mitzi, Michael F. Toney
Summary: Thiocyanate-containing additive MASCN can promote the crystallization of perovskite films and the formation of perovskite phase, contributing to growth through collision and drying processes. The characteristics of intermediate phases formed during this process and their kinetics of formation/dissociation play a crucial role in nucleation and growth of the perovskite phase.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Electrochemistry
Abdessalem Aribia, Jordi Sastre, Xubin Chen, Evgeniia Gilshtein, Moritz H. Futscher, Ayodhya N. Tiwari, Yaroslav E. Romanyuk
Summary: The study shows that applying NbOx as cathode coating can significantly improve the performance of lithium-ion batteries by enhancing interfacial charge transfer and inhibiting surface degradation of the cathode, resulting in better rate performance and cycle life.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Carolin M. Sutter-Fella
Summary: Material synthesis is crucial for discovering and creating new materials for energy applications. Understanding the relationship between function and structure is key in tailoring materials with desired functions. Metastable materials are common in condensed matter and may exhibit superior properties compared to equilibrium forms.
ADVANCED ENERGY MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Agnieszka Priebe, Jordi Sastre, Moritz H. Futscher, Jakub Jurczyk, Marcos V. Puydinger Dos Santos, Yaroslav E. Romanyuk, Johann Michler
Summary: Gold is commonly used in new microdevices for energy applications, microelectronics, and biomedical solutions due to its excellent electric conductivity and chemical inertness. Fluorine gas coinjection has been found to alter the polarity of gold secondary ions, aiding in the understanding of operation mechanisms and potential degradation processes in microdevices.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Romain Dubey, Jordi Sastre, Claudia Cancellieri, Faruk Okur, Alexander Forster, Lea Pompizii, Agnieszka Priebe, Yaroslav E. Romanyuk, Lars P. H. Jeurgens, Maksym Kovalenko, Kostiantyn Kravchyk
Summary: The study finds that using Sb as an interface layer helps to improve the wettability of Li on LLZO, reducing the interfacial resistance. Experimental results show that both Li/Sb-coated LLZO/Li cells and LLZO/V2O5 full cells exhibit good electrochemical performance without external pressure.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Xubin Chen, Jordi Sastre, Abdessalem Aribia, Evgeniia Gilshtein, Yaroslav E. Romanyuk
Summary: Flash lamp annealing (FLA) is explored for crystallizing LiCoO2 (LCO) cathodes on aluminum foils, achieving rapid heating of LCO films up to 900 degrees C while avoiding aluminum melting. Microbatteries fabricated using this method on flexible aluminum foil exhibit performance comparable to those on rigid silicon, offering potential for new microbattery designs at lower production costs.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Abdessalem Aribia, Jordi Sastre, Xubin Chen, Moritz H. Futscher, Matthias Rumpel, Agnieszka Priebe, Max Doebeli, Nicolas Osenciat, Ayodhya N. Tiwari, Yaroslav E. Romanyuk
Summary: This study demonstrates that using solid-state electrolyte can significantly increase the capacity of LiNi0.8Mn0.1Co0.1O2 (NMC811) cathode material. In a thin-film architecture, the solid-state electrolyte stabilizes the interface, prevents capacity decay and resistance growth, allowing cycling over a wider voltage range. Compared to liquid electrolyte, solid-state electrolyte enables the Li-rich NMC811 cells to cycle at a fast rate and with high efficiency.
ADVANCED ENERGY MATERIALS
(2022)
Article
Polymer Science
Vitor Vlnieska, Evgeniia Gilshtein, Danays Kunka, Jakob Heier, Yaroslav E. Romanyuk
Summary: This study explores the use of aerosol jet printing (AJP) for 3D printing of free-standing pillar arrays. Using aryl epoxy photopolymer ink coupled with a cross-linking on the fly technique, pillar structures with a diameter of 50 μm and a height of 550 μm were successfully printed. The study also finds that satellite droplets and overspray are unavoidable for structures smaller than 70 μm, but can be mitigated by reactive ion etching (RIE) as a post-processing step.
Article
Chemistry, Analytical
Agnieszka Priebe, Abdessalem Aribia, Jordi Sastre, Yaroslav E. Romanyuk, Johann Michler
Summary: Massive demand for Li-ion batteries drives the research of new materials for next-generation batteries, such as all-solid-state batteries. TOF-SIMS shows outstanding potential for comprehensive characterization of novel Li-rich nickel manganese cobalt oxide thin films, potential cathode materials. The investigation reveals the presence of overlithiated grains and nanoparticles in the buried part of the thin films.
ANALYTICAL CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Goekhan Kara, Sami Bolat, Khushdeep Sharma, Matthias J. J. Grotevent, Dmitry N. N. Dirin, Dominik Bachmann, Roman Furrer, Luciano F. F. Boesel, Yaroslav E. E. Romanyuk, Rene M. Rossi, Maksym V. V. Kovalenko, Michel Calame, Ivan Shorubalko
Summary: This work successfully integrates an infrared photodetector with a polymer optical fiber, by wrapping graphene around the fiber and inkjet printing PbS quantum dots onto the curved surface. The resulting device acts as a functional coating and can detect infrared light without interrupting the waveguide. This cost-effective and adaptable hybrid detector approach brings us closer to multifunctional e-textiles and improved interfacing of the skin for wearable and non-invasive healthcare applications.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Materials Science, Ceramics
Evgeniia Gilshtein, Stefan Pfeiffer, Severin Siegrist, Vitor Vlnieska, Thomas Graule, Yaroslav E. Romanyuk
Summary: In this study, alumina and zirconia thin films modified with colored nano-FexOy pigments were sintered using the flash-lamp-annealing method. The characteristics of the thin films obtained with different additives were compared, including surface morphologies, optical properties, crystallinities, and structures.
CERAMICS-SWITZERLAND
(2022)
Article
Chemistry, Physical
Moritz H. Futscher, Thomas Amelal, Jordi Sastre, Andre Muller, Jyotish Patidar, Abdessalem Aribia, Kerstin Thorwarth, Sebastian Siol, Yaroslav E. Romanyuk
Summary: The use of amorphous carbon as an intermediate layer between the Cu current collector and the Lipon solid electrolyte improves the nucleation and growth of Li metal, leading to enhanced performance of anode-free solid-state batteries.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Materials Science, Multidisciplinary
Jordi Sastre, Moritz H. Futscher, Lea Pompizi, Abdessalem Aribia, Agnieszka Priebe, Jan Overbeck, Michael Stiefel, Ayodhya N. Tiwari, Yaroslav E. Romanyuk
Summary: Research has shown that tuning the lithium stoichiometry in LLZO can form an amorphous phase, effectively blocking the growth of lithium dendrites, increasing ionic conductivity while maintaining high electronic insulation. The amorphous Li-La-Zr-O as a dendrite blocking layer shows excellent performance in microbatteries, promising to accelerate the development of better solid-state batteries.
COMMUNICATIONS MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Evgeniia Gilshtein, Jasmine Tacneng, Sami Bolat, Galo Torres Sevilla, Yaroslav E. Romanyuk
Summary: The study introduces a method for creating a transparent security system based on printed conductive indium tin oxide (ITO) with high transparency and good conductivity through inkjet printing and flash lamp annealing. This technology can be used to produce a transparent security access system that is completely invisible.
FRONTIERS IN NANOTECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Matthias Rumpel, Michael Machhaus, Jordi Sastre, Simon Ziegler, Xubin Chen, Andreas Flegler, Yaroslav E. Romanyuk, Guinevere A. Giffin
Summary: The production process of TF-SSB requires high temperatures, leading to challenges in thermal interfacial stability. Interdiffusion between electrode and substrate affects the utilization of cathode active materials. Testing different conductive interdiffusion barriers, ITO was found to effectively prevent interdiffusion and improve discharge capacity of TF-SSBs.
MATERIALS ADVANCES
(2021)
Article
Energy & Fuels
Shahriyar Safat Dipta, Md Habibur Rahaman, Walia Binte Tarique, Ashraful Hossain Howlader, Ayush Pratik, John A. Stride, Ashraf Uddin
Summary: Implementing a double-sided passivation approach can enhance the performance of n-i-p structured PSCs and improve the stability and photovoltaic properties of the cells.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Daniel Ourinson, Andreas Brand, Andreas Lorenz, Marwan Dhamrin, Sebastian Tepner, Michael Linse, Nathalie Goettlicher, Kosuke Tsuji, Jonas D. Huyeng, Florian Clement
Summary: This work presents two approaches to reduce the amount of silver on the rear side of M2-sized industrial iTOPCon solar cells. The Cu-based approach shows promise with similar power conversion efficiency compared to the conventional approach, while the Al-based approach exhibits some limitations but demonstrates the potential of such type of contact for iTOPCon solar cells.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Abasifreke Ebong, Donald Intal, Sandra Huneycutt, Thad Druffel, Ruvini Dharmadasa, Kevin Elmer, Apolo Nambo
Summary: This study demonstrates the successful metallization of a PERC silicon solar cell using screen-printable copper (Cu) paste. The Cu paste contains antioxidant additives and diffusion inhibitors to prevent oxidation and diffusion of Cu. The Cu-printed cells achieved an efficiency of 19% and showed no Cu diffusion after characterization tests. The long-term stability and effectiveness of the Cu diffusion barrier were also confirmed.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Senami Zogbo, Wilfried Favre, Olivier Bonino, Marie-Estelle Gueunier-Farret
Summary: Measuring specific contact resistivity (pc) is crucial for interface engineering in high efficiency solar cells. The Transfer Length Method (TLM) is commonly used for evaluating layer sheet resistance (Rsheet) and pc, but it is not suitable for metal/Transparent Conductive Oxide (TCO) interface evaluation in silicon heterojunction (SHJ) cells. This study investigates the parameters that restrict current confinement within the TCO, including mid-gap trap density (Dit) at the a-Si:H/c-Si interface and the activation energy (Ea = Ec - EF) variation of a-Si:H contact layers.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Jean-Baptiste Charpentier, Philippe Voarino, Julien Gaume
Summary: The phenomenon of ribbon lengthening in PV modules exposed to thermal cycling is not well explained in the literature. In this study, a three layers model is proposed to explain this effect, and the predictions of the model are validated through finite element method simulations and experiments. The results show that the model predictions are consistent with the indirect measurements, but not with the direct measurements. Additionally, it is inferred that the encapsulant plays a role after the solder failure.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Jean-Baptiste Charpentier, Philippe Voarino, Julien Gaume
Summary: This study investigates the problematic ribbon lengthening observed in PV modules exposed to high amplitude thermal cycling. A simplified system model is proposed and accurate predictions are obtained using the Finite Element Method. The results show that the thickness of the encapsulant has a substantial impact on the lengthening of the ribbons.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
S. Catalan-Gomez, E. Martinez Castellano, M. Schwarz, M. Montes Bajo, L. Dorado Vargas, A. Gonzalo, A. Redondo-Cubero, A. Gallego Carro, A. Hierro, J. M. Ulloa
Summary: This study investigates the use of core-shell gallium nanoparticles as functional light scatterers on solar cells. By optimizing the nanoparticle size, the short-circuit current of the solar cells is significantly improved. The underlying physical mechanism is studied through optical measurements and simulations, and a method to reduce the plasmonic effect of the nanoparticles is demonstrated.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
M. Gamel, G. Lopez, A. M. Medrano, A. Jimenez, A. Datas, M. Garin, I. Martin
Summary: In this study, a highly reflective ohmic contact to p-type c-Ge material is demonstrated, which can improve the efficiency of thermophotovoltaic devices. The experimental results show that this contact can simultaneously meet the requirements of good back surface passivation, low electrical resistivity, and high reflectivity. Moreover, simulations suggest that implementing these back contacts has the potential to achieve conversion efficiencies comparable to high-efficiency c-Ge TPV cells.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Hongyang Wei, Qing Xu, Dongchu Chen, Min Chen, Menglei Chang, Xiufang Ye
Summary: This study prepared solar selective absorption films based on anodic aluminum oxide (AAO) photonic crystals using a unique electrodeposition method. The Co-Ag electrodeposited film exhibited superior solar selective absorption properties and thermal stability.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Ankit Kumar, Ankit Chauhan, Jordi Llobet, Helder Fonseca, Patricia C. Sousa, Carlos Calaza, Gil Shalev
Summary: This study found that decorating subwavelength arrays with SiO2 quasi-nanolenses (qNL arrays) can enhance the absorption of the solar spectrum. Optical absorption mechanisms in qNL arrays were investigated using near-field scanning optical microscopy (NSOM), revealing that the enhancement is a result of the combination of effective antireflection coating, increased optical interactions between adjacent dielectrics for elevated light trapping, and strong light concentration due to the presence of qNLs.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
S. Pingel, T. Wenzel, N. Goettlicher, M. Linse, L. Folcarelli, J. Schube, S. Hoffmann, S. Tepner, Y. C. Lau, J. Huyeng, A. Lorenz, F. Clement
Summary: This study demonstrates the potential to reduce silver consumption in highly efficient SHJ cells through fine-line screen printing using low temperature paste with various screens. The results show that using finer mesh allows for narrower grid fingers and lower resistance, leading to improved cell efficiency. Simulation results indicate that module wire configuration is crucial for reducing silver consumption.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Xibo He, Jun Qiu, Wei Wang, Yicheng Hou, Yong Shuai
Summary: This paper proposes a novel phase change material with high thermal conductivity and stability for fast photo-thermal conversion and storage. The experimental results demonstrate excellent durability and stability of the phase change material, with good performance in thermal conductivity and thermal storage efficiency.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Qingyuan Liu, Lin Wang, Zheng Liu, Guohua Liu
Summary: A new evaporating structure consisting of liquid marble with tunable nanowire array is proposed to enhance solar evaporation. The experiments show that the liquid marble with nanowire array exhibits outstanding evaporation performance, which has significant implications for seawater desalination or wastewater treatment.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Hao Liu, Qiming Liu, Jinpei Liu, Yonggang Zhao, Yingjie Yu, Yue An, Ganghui Wei, Yanzheng Li, Yujun Fu, Junshuai Li, Deyan He
Summary: Moisture in the air is identified as the main cause of performance degradation in organic-inorganic hybrid solar cells. Exposure to air leads to the growth of thin oxide layer on the interface and the formation of silver sulfide, increasing the series resistance and decreasing the fill factor, thus degrading the cell performance.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
E. Blanco, P. Martin, M. Dominguez, P. Fernandez-Palacios, I. Lombardero, C. Sanchez-Perez, I. Garcia, C. Algora, M. Gabas
Summary: This study addresses the lack of optical parameters for p-type Ge wafers by determining the complex refractive indices of commercial Ge wafers with varying doping levels. The obtained data successfully reproduces the critical points associated with interband transitions and absorption features below the bandgap. The refractive indices were validated through experimental measurements and solar cell simulations.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
