Article
Chemistry, Multidisciplinary
Marilou Cadatal-Raduban, Tomoki Kato, Yusuke Horiuchi, Jiri Olejnicek, Michal Kohout, Kohei Yamanoi, Shingo Ono, Kohei Yamanoi, Shingo Ono
Summary: The development of a titanium dioxide nanoparticle thin film detector with enhanced photoconductivity is reported. The film deposited on a SiO2 substrate with a thickness of 80 nm exhibited the best photoconductivity.
Article
Chemistry, Physical
Mingqi Wang, Qingyi Zeng, Sheng Chang, Shanshan Li, Chun Hu, Zhihong Chen
Summary: By introducing a ferroelectric nanolayer onto tungstic oxide nanomaterial, this study successfully enhanced the photoelectrochemical performance, significantly increasing the photocurrent density. The results indicate that the ferroelectric nanolayer plays a crucial role in improving charge transport and separation properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Jun Ohta, Takeshi Ohgai
Summary: Using the potentiostatic electrodeposition technique, zinc telluride nanocrystalline thin films and an array of nanowires were successfully synthesized in a citric acid bath. After annealing, the zinc telluride films exhibited a crystalline phase with a reddish-brown tint and demonstrated optical absorption performance in a wavelength region shorter than 559 nm.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Physical
M. P. J. Punkkinen, A. Lahti, J. Huhtala, J-P Lehtio, Z. J. Rad, M. Kuzmin, P. Laukkanen, K. Kokko
Summary: III-V semiconductor-oxide interfaces have significant potential in electronic applications, with coherent interfaces having smaller energies and the ability to stabilize oxide structures not found in bulk form. The gap state density of In-terminated quasi-coherent interfaces is small or zero, but partial oxidation of substrate P atoms can induce distinct gap states, explaining Fermi level pinning. Non-stoichiometric compositions are also investigated, with experimental results on InP native oxide growth discussed. The models can be used to study interface properties and more complex models can be based on them.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Neville J. Cory, Eran Visser, Jessica Chamier, Juliet Sackey, Franscious Cummings, Mahabubur Chowdhury
Summary: In this study, a CuO thin film sensor was prepared using electrodeposition method for photo electrochemical glucose detection, showing good amperometric performance and a wide linear range under light conditions. The band gap of photoactive CuO thin film can be tuned by etching in NH3 solution, and the oxidation of glucose is found to be an irreversible electron transfer process controlled by diffusion.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Yu Sun, Ki Hei Wong, Kin Wing Kwok
Summary: This study demonstrates precise control of optical band gap in flexible lead-free ferroelectric films through mechanical strain, showing potential for high-performance optical devices and providing a new perspective for the design and fabrication of novel ferroelectric optical devices.
Article
Materials Science, Multidisciplinary
Ahmed M. Bolbol, Omar H. Abd-Elkader, Hassan Elshimy, Zaki I. Zaki, Salah A. Shata, M. Kamel, Ahmed S. Radwan, Nasser Y. Mostafa
Summary: In this study, dense thin films of TiO2 and TiO2 doped with Zr4+ were prepared using spin coating on glass substrate and characterized. The results showed that doping Zr4+ can change the optical and crystalline structure properties of TiO2, with higher doping concentration leading to lower band gap energy, slight lattice enlargement, and smaller crystal size. Additionally, the doped films exhibited typical photoluminescence in the visible spectrum region and had a lower rate of electron-hole recombination.
RESULTS IN PHYSICS
(2022)
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
Engineering, Electrical & Electronic
[Anonymous]
Summary: Authors are requested to submit unpublished manuscripts for inclusion in an upcoming event.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Chemistry, Physical
Shrinath Dattatray Ghadge, Moni K. Datta, Oleg Velikokhatnyi, Prashant N. Kumta
Summary: This study presents a simple and effective Mo doping approach for generating high-performance photoanodes for PEC water splitting. Mo doping can enhance light absorption ability, reduce band gap, increase carrier density and photocurrent density, while also decreasing charge transfer resistance and improving PEC stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Ceramics
Housei Akazawa
Summary: Both undoped and Er3+-doped Bi2O3 thin films were sputter-deposited on Si(100) substrates, exhibiting varying refractive indices and emission characteristics. Er3+ emissions peaking at 532 nm were observed in the Er3+-doped Bi2O3 films, with concentration quenching potentially influenced by the deposition temperature.
CERAMICS INTERNATIONAL
(2021)
Review
Chemistry, Multidisciplinary
Ho Soonmin
Summary: The preparation and characterization of thin films, including metal sulfide, metal selenide, metal oxide, and metal telluride, using the successive ionic layer adsorption and reaction (SILAR) method were investigated. The properties of the films were found to be influenced by the deposition cycles, rinsing times, immersion times, and precursor concentrations. The resulting films showed suitable band gap values and high absorption coefficients, making them suitable for solar cell applications with high power conversion efficiency.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Electrical & Electronic
Maha Tariq, Naveed Afzal, Mohsin Rafique
Summary: This study demonstrates an improvement in the photodetection response of a Cupric Oxide (CuO) thin film through the annealing process. The film exhibited higher crystallinity and changes in grain structure after annealing. The photo-to-dark current ratio of the Al/CuO/Al photodetector was significantly enhanced after annealing.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Suresh Kilaru, Ramesh Gade, Yadagiri Bhongiri, Anuj Tripathi, Prabhakar Chetti, Someshwar Pola
Summary: The synthesis and characterization of new hetero polycyclic aromatic hydrocarbons (HPAHs) as potential lead molecules in organic semiconductor devices have been reported. These compounds, with good physicochemical properties, show promising carrier mobility and transport properties.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Ahmed M. Bolbol, Hassan Elshimy, Omar H. Abd-Elkader, M. Kamel, Salah A. Shata, Nasser Y. Mostafa
Summary: A simple and affordable solution-processed method was used to produce pure and antimony-doped lead iodide thin films. The doping concentration affected the crystalline sizes, optical transparency, and energy gap of the films. The resulting films showed good optical transparency in the visible and near-infrared regions, making them suitable for use in solar cells. Antimony doping also influenced the refractive index and decreased the optical conductivity and dielectric constant of the films.
Editorial Material
Public, Environmental & Occupational Health
Martin McKee, Anthony Staines
EUROPEAN JOURNAL OF PUBLIC HEALTH
(2023)
Article
Public, Environmental & Occupational Health
Manuel Serrano-Alarcon, Yuxi Wang, Alexander Kentikelenis, Martin Mckee, David Stuckler
Summary: This study examines the association between far-right politics and vaccine hesitancy during the COVID-19 vaccine roll-out in Spain. The findings show that far-right supporters were initially more vaccine-hesitant, but this decreased with a successful vaccine roll-out. However, vaccine hesitancy rebounded among far-right voters when their party leaders promoted anti-vax discourse.
EUROPEAN JOURNAL OF PUBLIC HEALTH
(2023)
Article
Chemistry, Multidisciplinary
N. S. Howard, A. J. Archer, D. N. Sibley, D. J. Southee, K. G. U. Wijayantha
Summary: This study demonstrates that the coffee ring effect during colloidal droplet evaporation can be mitigated by adding a specific concentration of a surfactant. Experiments were conducted on carbon nanotube suspensions with different surfactant concentrations on various substrates. The results showed different pattern types, with a critical surfactant concentration resulting in highly uniform deposits with coffee ring subfeatures. Image analysis and profilometry allowed for the identification of these subfeatures and the inference of deposit coverage.
Article
Public, Environmental & Occupational Health
Lucinda Hiam, Danny Dorling, Martin McKee
Summary: This study explores the views of public health experts on the adverse trends in life expectancy in England and Wales over the past decade, their causes and possible solutions, as well as their opinions on how the pre-pandemic situation influenced the UK's COVID-19 response. The findings show a lack of consensus among experts on the significance and explanations of the decline in life expectancy during this period. Some attributed it to data misinterpretation, widening health inequalities, and disinvestment in public services, while others emphasized social factors. The majority called for increased investment and implementation of existing evidence on reducing health inequalities, highlighting the need to address these underlying issues for pandemic preparedness.
Article
Public, Environmental & Occupational Health
Jonathan Cylus, Jessica Walters, Martin McKee, Peter Cowley
Summary: Covid-19 vaccination rollouts not only save lives and relieve pressures on health systems but also support economic growth and generate additional tax revenues. Meeting the 85% adult population target can partially offset the costs of vaccine programs by increasing consumption tax revenues.
EUROPEAN JOURNAL OF PUBLIC HEALTH
(2023)
Editorial Material
Medicine, General & Internal
Lucinda Hiam, Danny Dorling, Martin McKee
JOURNAL OF THE ROYAL SOCIETY OF MEDICINE
(2023)
Article
Medicine, General & Internal
Sharon Friel, Jeff Collin, Mike Daube, Anneliese Depoux, Nicholas Freudenberg, Anna B. Gilmore, Paula Johns, Amos Laar, Robert Marten, Martin McKee, Melissa Mialon
Summary: This paper discusses the future role of the commercial sector in global health and health equity. It does not propose the overthrow of capitalism or full support for corporate partnerships. There is no single solution to eliminate the harms caused by commercial determinants of health, but evidence suggests that progressive economic models, international frameworks, government regulation, compliance mechanisms, and strategic civil society mobilisation can collectively bring about systemic, transformative change to reduce these harms and promote human and planetary wellbeing. The question is not whether the world has the resources or will to act, but whether humanity can survive without making these efforts.
Article
Health Policy & Services
Samantha Thomas, May C. van Schalkwyk, Mike Daube, Hannah Pitt, Darragh McGee, Martin McKee
Summary: Children around the world are exposed to extensive marketing for gambling products, which normalizes gambling as harmless entertainment despite evidence of its harms. Regulatory efforts to protect children from gambling marketing are inconsistent and inadequate. A comprehensive public health approach is urgently needed to limit the influence of gambling marketing on young people.
HEALTH PROMOTION INTERNATIONAL
(2023)
Article
Public, Environmental & Occupational Health
Thomas Stubbs, Alexandros Kentikelenis, Daniela Gabor, Jayati Ghosh, Martin McKee
Summary: Recognising the lack of preparedness for the COVID-19 pandemic, international organisations are calling for additional funding to strengthen pandemic preparedness and response systems in low-income and middle-income countries. This article examines the prospects of national health budgets increasing in such a context, revealing that public spending will decrease for almost half of these countries by 2024. The increase in public spending on repaying external debt is a key driver of this austerity wave, potentially leading to deteriorating population health and reduced public health services.
Article
Materials Science, Multidisciplinary
Paulo Luis, Darren Southee, George W. Weaver, Upul Wijayantha
Summary: In order to address the issue of long-term electrochemical stability in metal-based materials for flexible energy storage, researchers have developed a method to protect the current collector by applying a conductive carbon-based barrier layer, resulting in improved electrical properties.
FLEXIBLE AND PRINTED ELECTRONICS
(2023)
Article
Medicine, General & Internal
Peter Binyaruka, Blake Angell, Martin McKee, Antonio Andreoni, Masuma Mamdani, Eleanor Hutchinson, Dina Balabanova
Summary: This study developed a discrete choice experiment (DCE) to address informal payments in the health sector in Tanzania. Through a mixed-methods approach, the researchers identified six attributes for the DCE and validated them through a pilot study. The findings provide important insights for policy interventions.
Editorial Material
Medicine, General & Internal
Martin Mckee
BMJ-BRITISH MEDICAL JOURNAL
(2023)
Article
Medicine, General & Internal
Mark A. Green, Martin McKee, Olivia K. L. Hamilton, Richard J. Shaw, John Macleod, Andy Boyd, Srinivasa Vittal Katikireddi
Summary: This study examined the association between disrupted access to healthcare during the covid-19 pandemic and the risk of avoidable hospital admissions. The findings showed that people who experienced disrupted access had a higher likelihood of potentially preventable hospital admission. This highlights the importance of increasing healthcare investment to address the implications of the pandemic and protect treatments and procedures during future pandemics.
BMJ-BRITISH MEDICAL JOURNAL
(2023)
Article
Public, Environmental & Occupational Health
Vincenzo Galasso, Vincent Pons, Paola Profeta, Martin Mckee, David Stuckler, Michael Becher, Sylvain Brouard, Martial Foucault
Summary: The study found that altruistic messages have stronger effects on COVID-19 vaccine intentions and behavior compared to egoistic messages. These effects are more significant in countries with high COVID-19 mortality, while weaker in countries with low mortality rates.
Review
Health Care Sciences & Services
Alexander Kentikelenis, Abdul Ghaffar, Martin McKee, Livia Dal Zennaro, David Stuckler
Summary: Health policy and systems research (HPSR) is a neglected area in global health financing, with only 2% of funding calls including a discernible HPSR component. Efforts should be made to convince global health funders to institutionalize the inclusion of HPSR components in all funding calls.
HEALTH POLICY AND PLANNING
(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)
