Article
Energy & Fuels
Ke Cheng, Xingfen Shen, Jingling Liu, Xinsheng Liu, Zuliang Du
Summary: A sequential route for low-cost fabrication of high quality Ag-alloyed CIGS absorbers is reported, where Ag-alloying is introduced into the CuInGa precursor to widen the band gap and improve the crystallinity of the ACIGS absorbers. Different Ag thin layer incorporation locations are schemed for deep understanding the band gap energy and crystallinity regulation mechanism of Ag alloying, leading to a notable improvement in Voc. Finally, the ACIGS absorbers are sulfurized to achieve a highest power conversion efficiency of 13.01%.
Article
Materials Science, Ceramics
Louisiane Verger, Vinuyan Ganesaratnam, Virginie Nazabal, Sebastien Chenu, Christophe Calers, David Le Coq, Laurent Calvez, Olivier Hernandez, Xiang-Hua Zhang
Summary: Crystallization in Ga, Sb, and Se glasses was studied, and a correlation between Se content, crystalline phases, and electrical conductivity was observed. The resulting glass-ceramics exhibited significantly higher conductivity compared to other Se-based glass-ceramics.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Dongwen Gao, Li Wang, Xueqiong Su
Summary: This study investigates the influence of different doping ratios on the composition, structure, morphology, and luminescence properties of bulk ceramics, determining the optimum doping ratio in this range. The research enhances the optical performance of the material, suggesting improved microstructural, optical, and electrical properties for potential use in new optoelectronic devices.
CERAMICS INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
Md Salahuddin Mina, Enkhjargal Enkhbayar, Namuundari Otgontamir, SeongYeon Kim, JunHo Kim
Summary: In this study, narrow band gap CIGSSe solar cells were investigated with and without alkali treatment. The power conversion efficiency of the solar cell was significantly enhanced through rubidium postdeposition treatment, which facilitated defect passivation and downshift of the valence band maximum. This treatment resulted in a high efficiency tandem solar cell with a PCE of -15% and an energy band gap of less than 1.1 eV.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Wei Shangguan, Cuixia Yan, Wenqing Li, Chen Long, Liming Liu, Chenchen Qi, Qiuyang Li, Yan Zhou, Yurou Guan, Lei Gao, Jinming Cai
Summary: A new class of two-dimensional semiconductor materials with a wide band gap, excellent stability, and high mobility has been discovered. These materials have great potential for applications in optics and electronic devices.
Article
Chemistry, Physical
Abishek K. Iyer, Seung Heon Ha, Michael J. Waters, Thomas S. Ie, Seung Han Shin, James M. Rondinelli, J. I. Jang, Mercouri G. Kanatzidis
Summary: Low-dimensional chalcogenides show promising nonlinear optical responses in the infrared region. Rb(2)Sn(4)Q(9) (Q = S and Se) crystals have good thermal properties and air-water stability, making them suitable for large crystal growth and NLO applications.
CHEMISTRY OF MATERIALS
(2023)
Article
Energy & Fuels
Sinju Thomas, Tobias Bertram, Christian Kaufmann, Tim Kodalle, Jose A. Marquez Prieto, Hannes Hempel, Leo Choubrac, Wolfram Witte, Dimitrios Hariskos, Roland Mainz, Romain Carron, Jan Keller, Pablo Reyes-Figueroa, Reiner Klenk, Daniel Abou-Ras
Summary: In this study, the impacts of effective band-gap energy, electron diffusion length, and Ga/In gradient on the Gaussian broadening of parameters describing the EQE onset of thin-film solar cells were evaluated. The results show that the total standard deviation sigma(total) can be separated into contributions from these material properties and a residual component sigma(residual). It is demonstrated that a flat band-gap with no compositional gradient in the CIGSe absorber is essential to obtain the lowest sigma(total) values and thus result in lower recombination losses and gains in V-oc.
PROGRESS IN PHOTOVOLTAICS
(2022)
Article
Materials Science, Multidisciplinary
Shaohong Yang, Wencai Zhou, Jingjing Qu, Linrui Zhang, Xiaoyu Lv, Zilong Zheng, Xiaoqing Chen, Hui Yan, Ming Zhao, Daming Zhuang
Summary: Cu(In,Ga)(Se,S)(2) has distinct advantages as a photovoltaic material, allowing independent tuning of its conduction and valence bands, as well as its composition distribution. Through calculations and simulations, we achieved high-efficiency Cu(In,Ga)(Se,S)(2) solar cells with an efficiency of 23.29%, providing an understanding of tunable engineered band energy research.
Article
Chemistry, Physical
Oana Cojocaru-Miredin, Elaheh Ghorbani, Mohit Raghuwanshi, Xiaowei Jin, Dipak Pandav, Jens Keutgen, Reinhard Schneider, Dagmar Gerthsen, Karsten Albe, Roland Scheer
Summary: Research has shown that intense sulphurization processes in Cu(In,Ga)Se-2 thin-film solar cells, combined with Ga-grading, can lead to improved electrical properties of the buffer/absorber heterojunction by reducing p-doping and altering the band diagram. This process results in the formation of a S-rich compound at the absorber surface, ultimately offering new possibilities for synthesizing high-performance Cu(In,Ga)(Se,S)(2) solar cells.
Article
Engineering, Electrical & Electronic
Wei Wang, Guanghui Liu, Lingyun Hao, Ling Lin, Lei Zhang, Qing Lin, Hangmin Guan
Summary: This study investigated the properties of Cu3Sb(Sx,Se1-x)4 thin films and found that the selenium source temperature significantly influenced the film's performance, with an increase in selenium concentration leading to a decrease in band gap. The results also showed that the thin films exhibited p-type electrical behavior and distinct photoconductivity.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Energy & Fuels
Yunxiang Zhang, Lin Shi, Zhongjie Wang, Hailu Dai, Zhaojing Hu, Shengjie Zhou, Hongyue Chen, Xichen Feng, Jun Zhu, Yun Sun, Wei Liu, Qinfang Zhang
Summary: This study employs SCAPS simulation to investigate the effects of silver-doped CIGS absorber layer on lattice defect and band gap gradient. It is found that appropriate substitution of copper with silver can reduce defect concentrations and enlarge the ideal band gap. Moreover, solar cell efficiency has a relative increase with the ideal lattice structure.
Article
Materials Science, Multidisciplinary
Luanhong Sun, Yijie Zhao, Yuanfeng Ye, Lingyun Hao, Wei Wang, Hangmin Guan, Jinze Li
Summary: A convenient and effective strategy for Ga doping is proposed to suppress defects and tailor the residual stress of CZTSSe thin film solar cells. The CZTGSSe with a doping concentration of 0.28 mol L-1 exhibits an optimized heterojunction characteristic with a CBO of -0.30 eV and a released residual stress of -1.87 GPa. The ultimately structured device achieves a PCE of 5.37% and maintains 80% of its original PCE after exposure to a harsh bending environment.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Inorganic & Nuclear
Son-Tung Nguyen, Pham Cuong, Nguyen Q. Cuong, Chuong Nguyen
Summary: In this study, novel 2D Janus XMoGeN2 materials were proposed and their controllable electronic features under external electric field and strain were examined using first-principles prediction. The results showed that these materials are structurally and dynamically stable indirect semiconductors, and their electronic band gap and band structures can be controlled by external electric field and strain, making them promising candidates for flexible optoelectronics and nanoelectronics.
DALTON TRANSACTIONS
(2022)
Article
Engineering, Chemical
R. Pravina, Haripriyan Uthayakumar, A. Sivasamy
Summary: This study uses semiconductor solar photocatalysis to mineralize dyes in wastewater and finds optimal treatment conditions through experimental design and optimization methods. By developing RSM-ANN and RSM (GA-ANN) hybrid models, the percentage degradation of the dye could be successfully predicted, with the RSM (GA-ANN) model showing higher accuracy and prediction capability.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Optics
V. S. Shiryaev, M. Sukhanov, A. P. Velmuzhov, E. Karaksina, T. Kotereva, G. E. Snopatin, R. D. Blagin, B. Denker, B. Galagan, V. V. Koltashev, V. G. Plotnichenko, S. E. Sverchkov
Summary: High-purity 700 ppmw Sm3+-doped Ga2.2Ge26.5As14.6Se56.7 glass has been prepared and investigated, showing low impurity content and high stability. The glass purification process involves multiple stages for individual components and the basic glass-forming melt. The Sm3+-doped Ga-Ge-As-Se glass exhibits photoluminescence in several spectral regions.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Physical
Shiva Choupanian, Wolfhard Moller, Martin Seyring, Carsten Ronning
Summary: This study experimentally demonstrates channeling of low-energy ions in crystalline nanoparticles, which differs from conventional high-energy ion irradiation. Channeling has a significant impact on ion transport in crystals and is relevant for focused ion beam (FIB) applications. Therefore, it is recommended not to solely rely on standard Monte-Carlo algorithms for predicting ion distribution depths in amorphous materials.
Article
Nanoscience & Nanotechnology
Hongyan Mei, Alexander Koch, Chenghao Wan, Jura Rensberg, Zhen Zhang, Jad Salman, Martin Hafermann, Maximilian Schaal, Yuzhe Xiao, Raymond Wambold, Shriram Ramanathan, Carsten Ronning, Mikhail A. Kats
Summary: In this study, we demonstrated the ability to spatially modify metal oxides using a direct writing approach with a focused ion beam system. By doping a wide-bandgap semiconductor, zinc oxide, we achieved variable carrier concentrations, and by defect engineering a correlated semiconductor, vanadium dioxide, we locally modified its insulator-to-metal transition temperature. This area-selective modification method provides a simple and mask-less route to fabricate optical structures.
Article
Materials Science, Multidisciplinary
Lukas Peters, Christoph Margenfeld, Jan Krugener, Carsten Ronning, Andreas Waag
Summary: The presence of carbon impurities in AlN was believed to be the main cause of the absorption at 265 nm. However, this study revealed that the intrinsic nitrogen-vacancy defect V-N plays a crucial role in the absorption. This finding is significant for further improvement of UV-LEDs.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Parijat Barman, Abhik Chakraborty, Denis A. Akimov, Ankit Kumar Singh, Tobias Meyer-Zedler, Xiaofei Wu, Carsten Ronning, Michael Schmitt, Juergen Popp, Jer-Shing Huang
Summary: Plasmonic gratings with spatially resolved broadband momentum were used to investigate plasmonic enhancement effects in two nonlinear optical processes, TPPL and SHG. The experimental spatial distributions of nonlinear signals agreed well with analytical predictions, highlighting the antenna function of the grating in plasmonic nonlinear signal generation.
Article
Optics
Daniel Repp, Angela Barreda, Francesco Vitale, Isabelle Staude, Ulf Peschel, Carsten Ronning, Thomas Pertsch
Summary: Semiconductor nanowire lasers can have their lasing threshold modified by their environment, and using metallic substrates can access low-volume Surface-Plasmon-Polariton (SPP) modes and describe mode competition in nanowire lasers. The study found that an aluminum substrate decreases the lasing threshold for ZnO nanowire lasers, while a silver substrate increases the threshold compared to a dielectric substrate. These findings allow for predictions about the interaction between planar metals and semiconductor nanowires, guiding future improvements in highly-integrated laser sources.
Article
Chemistry, Multidisciplinary
Christian T. Plass, Valentina Bonino, Maurizio Ritzer, Lukas R. Jager, Vicente Rey-Bakaikoa, Martin Hafermann, Jaime Segura-Ruiz, Gema Martinez-Criado, Carsten Ronning
Summary: The dynamics of color centers in quantum technology are influenced by the local environment, and a combined approach of X-ray fluorescence analysis and X-ray excited optical luminescence (XEOL) was used to study this relationship. The simultaneous acquisition of data revealed compositional and functional variations at the nanoscale, demonstrating the extraordinary capabilities of these techniques. The findings on cobalt doped zinc oxide nanowires showed an anticorrelation between the band edge emission of the zinc oxide host and the intra-3d cobalt luminescence, indicating two competing recombination paths. Time-resolved XEOL measurements also revealed two exponential decays of the cobalt luminescence, with the fast decay attributed to a recombination cascade within the cobalt atom.
Proceedings Paper
Physics, Atomic, Molecular & Chemical
K. Bharuth-Ram, T. B. Doyle, V. Adoons, C. Ronning
Summary: This study reports on the magnetic behavior of single crystal ZnO substrates implanted with different concentrations of Mn ions. Conversion electron Mossbauer spectroscopy and magnetization isotherms analysis reveal no evidence of ferromagnetic behavior, but show paramagnetic behavior dominated by nanoscale magnetic clusters.
HYPERFINE INTERACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Ivona Kafedjiska, Igal Levine, Artem Musiienko, Natalia Maticiuc, Tobias Bertram, Amran Al-Ashouri, Christian A. Kaufmann, Steve Albrecht, Rutger Schlatmann, Iver Lauermann
Summary: The performance of five hole-transporting layers (HTLs) in single-junction perovskite and Cu(In, Ga)Se-2 (CIGSe)-perovskite tandem solar cells was investigated. Among them, NiOx:Cu+SAM was found to be the most suitable HTL for the monolithic CIGSe-perovskite tandem devices. It exhibited superior interfacial charge-carrier dynamics and achieved a power-conversion efficiency of 23.4%, V-oc of 1.72V, and a fill factor of 71%.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Physics, Applied
F. Vitale, D. Repp, T. Siefke, U. Zeitner, U. Peschel, T. Pertsch, C. Ronning
Summary: In this study, a mode selection scheme based on distributed feedback was proposed to achieve quasi-single mode lasing action in plasmonic nanowires. The orientation of the nanowire on the grating was found to affect the emission spectrum, with an additional peak emerging when the nano-cavity was perpendicular to the ridge direction. This peak was attributed to a hybrid mode dominating the mode competition and supported by localized plasmon polaritons on the metal grating ridges.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
M. Popovic, M. Novakovic, D. Vana, C. Ronning, D. Jugovic, V. Rajic, P. Noga
Summary: In this study, sequential implantation of gold and silver ions with varying ion fluence, as well as subsequent annealing, were used to modify the optical and plasmonic properties of TiN thin films and correlate them with their structural properties. The implanted films showed reduced metallicity and lower losses compared to the as-deposited film, while subsequent annealing partially recovered the destroyed structure and improved the metallic properties. By optimizing the implantation fluence of silver ions, TiN films with desirable optical performances were obtained.
Article
Materials Science, Multidisciplinary
Lukas Peters, Hendrik Spende, Stefan Wolter, Christoph Margenfeld, Carsten Ronning, Tobias Voss, Andreas Waag
Summary: In this study, carbon-implanted and high-temperature annealed AlN layers were analyzed using cathodoluminescence spectroscopy. Donor-acceptor pair transitions between carbon and oxygen impurities were identified. The presence of oxygen led to absorption in the deep UV range, while carbon was responsible for an absorption band at around 265 nm. The findings were supported by temperature- and power-dependent emission energy shifts and luminescence transients.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2023)
Article
Multidisciplinary Sciences
Nicholas A. Gusken, Ming Fu, Maximilian Zapf, Michael P. Nielsen, Paul Dichtl, Robert Roeder, Alex S. Clark, Stefan A. Maier, Carsten Ronning, Rupert F. Oulton
Summary: Since Purcell's seminal report 75 years ago, electromagnetic resonators have been used to control light-matter interactions to make brighter radiation sources and unleash unprecedented control over quantum states of light and matter. In this letter, the authors report a strong radiative emission rate enhancement of Er3+-ions across the telecommunications C-band in a single plasmonic waveguide based on the Purcell effect. The waveguide uses a reverse nanofocusing approach to efficiently enhance, extract, and guide emission from the nanoscale to a photonic waveguide, while keeping losses at a minimum.
NATURE COMMUNICATIONS
(2023)
Article
Energy & Fuels
I Kafedjiska, G. Farias Basulto, F. Ruske, N. Maticiuc, T. Bertram, C. A. Kaufmann, R. Schlatmann, I Lauermann
Summary: We propose monolithic copper-indium-gallium-diselenide (Cu(In,Ga)Se-2, CIGSe)-perovskite tandem solar cells with NiOx:Cu as a hole-transporting layer (HTL) transferred in air or N-2. The tandem with N-2-transferred NiOx:Cu + SAM achieves a champion efficiency of 23.2%, V-oc of 1.69 V, and FF of 78.3%. Air-transferred NiOx:Cu + SAM samples exhibit V-oc and FF losses, while those without SAM have heavy shunts. Exposure to air leads to loss in Ni2+ species, changes in NiOx:Cu's work function and valence band maxima, negatively impacting the tandems' V-oc and FF. Various morphological defects are detected in tandems with poor performance, originating from defects in the bottom CIGSe cell or cracking/delaminating of the perovskite top cell. The NiOx:Cu + SAM HTL bi-layer can decouple the growth of the top device from the rough, defect-rich and defect-tolerant bottom device, enabling high-performing devices.
JOURNAL OF PHYSICS-ENERGY
(2023)
Article
Materials Science, Multidisciplinary
Robert Wonneberger, Gloria Kirste, Martin Seyring, Martin Hafermann, Carsten Ronning, Maximilian Schaal, Felix Otto, Torsten Fritz, Andreas Undisz
Summary: Understanding the growth mechanism of oxide layer on 316 L requires knowledge of reaction front position, oxide phase formation, and elements diffusion paths. By using Mn as a tracer in a new experimental approach, essential information of the early stages of oxidation up to 600 °C is obtained. The study suggests a previously undocumented role of Cr valence state during oxide growth, as Cr6+ is detected at 600 °C.
Article
Materials Science, Multidisciplinary
Alexander Koch, Hongyan Mei, Jura Rensberg, Martin Hafermann, Jad Salman, Chenghao Wan, Raymond Wambold, Daniel Blaschke, Heidemarie Schmidt, Jurgen Salfeld, Sebastian Geburt, Mikhail A. A. Kats, Carsten Ronning
Summary: This study demonstrates the heavy and hyper doping of ZnO with gallium (Ga) ions using a focused ion beam (FIB) system combined with post-implantation laser annealing. The ion implantation allows for the incorporation of impurities with high concentrations, while the laser annealing process activates the dopants close to or beyond the solid-solubility limit of Ga in ZnO. Heavy doped ZnO:Ga with a free-carrier concentration of approximately 10^(21) cm^(-3) and a plasma wavelength of 1.02 μm is achieved, making it a promising plasmonic material for applications in the near infrared regime.
ADVANCED PHOTONICS RESEARCH
(2023)
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)
