Article
Chemistry, Physical
Satish A. Mahadik, Hemraj M. Yadav, Sarika S. Mahadik
Summary: By tuning surface polarity and sensitizing TiO2 nanorods with chlorophyll-a dye, improvements in DSSCs have been achieved. Various surface properties such as superhydrophobicity and reduction in oxygen defects were successfully explored. The sensitized system showed a 3.69 times improvement in PEC under 1000 W light illumination.
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
(2022)
Article
Mechanics
Yu-Hao He, Bu-Ying-Chao Cheng, Ke-Qing Xia
Summary: This laboratory study investigates the scattering, energy dissipation, and mean flow induced by internal gravity waves on slopes with different surface roughness. The results show that surface roughness leads to a more uniform distribution of energy dissipation in the normal direction to the slope. Surprisingly, surface roughness reduces both the maximum value in the dissipation profile and the total energy dissipation near the slope in most cases. The study also reveals that the off-criticality has a small effect on the distribution of energy dissipation, while surface roughness changes the structure of the scattering-induced mean flow and enhances its strength.
JOURNAL OF FLUID MECHANICS
(2022)
Article
Engineering, Electrical & Electronic
Xuekang Liu, Steven Gao, Wei Hu, Lehu Wen, Qi Luo, Benito Sanz-Izquierdo, Xiaodong Chen, Long Qian, Josaphat Tetuko Sri Sumantyo, Xue-Xia Yang
Summary: This paper presents a dual-polarized filtering antenna for base-station applications, which has steep cut-off characteristics and compact size. By utilizing split rings, slotted T-shaped branches, a single-stub tuner, and a parasitic loop, the antenna can achieve multiple radiation nulls and enhance the out-of-band suppression. The impedance bandwidth of the antenna can also be expanded with newly introduced resonant modes.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Chemistry, Applied
Hong Mo Kim, Hyun Kyu Lee, Suhyeon Kim, Jae Pil Kim
Summary: This work developed NIR absorbing films for NIR cut-off filters using anti-reflective coatings. By optimizing the thermal stability with polysulfone as the binder, the NIR cut-off ability of the filter was maximized through the use of a diimmonium dye and a cyanine dye. The combination of anti-reflective coatings and the NIR absorbing films showed superior performance without incident angle dependence and light leakage.
Article
Chemistry, Applied
Mutia Anissa Marysya, Dini Hayati, Sooyoung Han, Dang Xuan Long, Kyunggah Choi, Jongin Hong
Summary: We have successfully synthesized UV-harvesting dyes with a fluorene donor and different pi-conjugation bridges. We have also studied the spectroscopic, electrochemical, and colorific properties of the dyes, and confirmed their usefulness as photosensitizers in visibly transparent and colorless dye-sensitized solar cells. The UV-selective and visibly transparent solar cells show power conversion efficiencies ranging from 0.91% to 2.70% under one sun illumination, and from 6.17% to 8.13% under UVA illumination, with corresponding visible light transmittance of 60.73% to 58.22% and general color rendering index of 91 to 90.
Article
Materials Science, Multidisciplinary
Mufutau Abiodun Salawu, Abeeb Abolaji Ayobami, Aderonke Adebisi, Sabastine Chinedu Ezike, Yusuf Olanrewaju Saheed, Aderemi Babatunde Alabi
Summary: This study fabricated dye-sensitized solar cells using Eosin red and Hibiscus sabdariffa, with the results showing different current and voltage outputs for the two types of cells, with slightly higher efficiency for Hibiscus sabdariffa-based cells compared to Eosin red-based cells.
Article
Materials Science, Multidisciplinary
Samah Alhorani, Sarvesh Kumar, Mahaveer Genwa, P. L. Meena
Summary: This study explores the use of Bael tree leaves as a source for efficient dye extraction for green energy harvesting through DSSCs. The extracted dye shows chlorophyll as the main constituent with high ionic conductivity, enabling efficient power generation in DSSCs under different light sources. The fabricated DSSC using the novel Bael tree leaves-based dye demonstrates promising characteristics for green energy harvesting.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Transplantation
Xiao Xu, Zhikai Yang, Shaomei Li, Huayi Pei, Jinghong Zhao, Ying Zhang, Zibo Xiong, Yumei Liao, Ying Li, Qiongzhen Lin, Wenbo Hu, Yulin Li, Zhaoxia Zheng, Liping Duan, Gang Fu, Shanshan Guo, Beiru Zhang, Rui Yu, Fuyun Sun, Xiaoying Ma, Li Hao, Guiling Liu, Zhanzheng Zhao, Jing Xiao, Yulan Shen, Yong Zhang, Xuanyi Du, Tianrong Ji, Caili Wang, Lirong Deng, Yingli Yue, Shanshan Chen, Zhigang Ma, Yingping Li, Li Zuo, Huiping Zhao, Xianchao Zhang, Xuejian Wang, Yirong Liu, Xinying Gao, Xiaoli Chen, Hongyi Li, Shutong Du, Cui Zhao, Zhonggao Xu, Li Zhang, Hongyu Chen, Li Li, Lihua Wang, Yan Yan, Yingchun Ma, Yuanyuan Wei, Jingwei Zhou, Yan Li, Yingdong Zheng, Jinwei Wang, Ming-hui Zhao, Jie Dong
Summary: This study investigated the cut-off values of haemoglobin (Hb) in incident peritoneal dialysis (PD) patients and found that Hb levels below 100 g/l were significantly associated with adverse clinical outcomes.
NEPHROLOGY DIALYSIS TRANSPLANTATION
(2023)
Article
Crystallography
Daiana Albulescu, Daniel Ursu, Lucian-Mircea Rusnac, Sabina Nitu, Marinela Miclau, Melinda Vajda
Summary: The optimization of the photoactive electrode based on TiO2 with a complex architecture, combined with water-based electrolyte, has significantly improved the efficiency of dye-sensitized solar cells. The cell achieved a photovoltaic efficiency 1.45 times higher than the best reported for synthetic dye and 3 times for curcumin dye. The cells also maintained transparency across the Photosynthetic Active Radiation domain and exhibited high efficiency for various illumination conditions. The study demonstrates the viability and cost-effectiveness of implementing dye-sensitized solar cells in autonomous greenhouses.
Article
Multidisciplinary Sciences
Awatif A. Hendi, Meznah M. Alanazi, Wadha Alharbi, Taghreed Ali, Manal A. Awad, Khalid M. Ortashi, Haia Aldosari, Fatimah S. Alfaifi, Rabia Qindeel, Gul Naz, Tarfa H. Alsheddi
Summary: Researchers are interested in dye-sensitized solar cells (DSSCs) based on titanium dioxide (TiO2) nanoparticles (NPs) due to their unique characteristics and high efficiency. This study aims to fabricate DSSCs using TiO2 NPs and green natural dyes. The TiO2NPs were synthesized with an average size of 151.6 nm and characterized optically and structurally. The DSSCs achieved efficiencies of 0.24% and 2.19% using spinach and henna dyes as sensitizers, respectively.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Chin-Li Wang, Ming-Chi Tsai, Kum-Han Jian, Chien-Lin Li, Hung-Ming Chang, Ching-Yao Lin
Summary: Four pyrene-porphyrins were synthesized to investigate the influence of different isomers on the photovoltaic performance of dye-sensitized solar cells. The 1,8-isomer showed superior efficiency, possibly due to the "umbrella effect". These findings offer insights into isomeric dye design for future applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Luka Matovic, Nemanja Trisovic, Jelena Ladarevic, Vesna Vitnik, Zeljko Vitnik, Cagdas Yavuz, Burak Sen, Albashir Yasir, Sule Erten Ela, Dusan Mijin
Summary: Five novel D- pi-A structured pyridinium based compounds with different electron-donating units were synthesized and characterized. Their solvatochromic and electronic properties were investigated. The compounds were added to a liquid electrolyte to improve the photovoltaic performance of N719-sensitized solar cells. The highest conversion efficiency of 4.11% was achieved with the compound containing the 4-(N,N-dimethylamino)phenyl group.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Environmental Sciences
Ebru Batur, Sinan Kutluay, Orhan Baytar, Omer Sahin, Sabit Horoz
Summary: This study evaluates the performance of activated carbon produced from defatted black cumin in photovoltaic applications. The results show that using activated carbon support can significantly increase the photovoltaic efficiency of CdS semiconductor materials, and further enhancement can be achieved with molybdenum doping and different CdS concentrations. This study presents a new strategy to increase the solar cell efficiency of semiconductor-based solar cell structures using biowaste-based activated carbon supported CdS semiconductor materials.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Rua B. Alnoman, Eman Nabil, Shazia Parveen, Mohamed Hagar, Mohamed Zakaria, Ahmed A. Hasanein
Summary: This study introduces a novel synthesis method for five UV-selective absorbers and evaluates their potential application in transparent DSCs through computational and experimental analysis. The results demonstrate the advantages of using these dyes to improve the overall power conversion efficiency of DSCs.
Article
Energy & Fuels
Boda Zheng, Qingsheng Zhu, Jian Ku Shang
Summary: An inexpensive and highly catalytic carbon/AgNWs counter electrode was developed for flexible dye-sensitized solar cells. By adding an organic surfactant, depositing a uniform catalytic layer on AgNW transparent conductive electrode, and post-treating with low temperature UV irradiation, the surface of the catalytic layer was cleaned. The electrochemical tests demonstrated that the carbon/AgNWs counter electrode exhibits higher catalytic activity and the assembled DSSC shows superior photoelectrical conversion efficiency.
Article
Energy & Fuels
Adam Pockett, Michael Spence, Suzanne K. Thomas, Dimitrios Raptis, Trystan Watson, Matthew J. Carnie
Summary: The study demonstrates a new experimental methodology capable of accurately resolving the high frequency response of perovskite devices, particularly signals observable in the second and third quadrants of the complex plane. By combining single-frequency IMPS/IMVS measurements, it constructs the time dependence of device responses to initial illumination. The techniques reveal significant negative signals at high frequency as devices reach steady state, allowing assessment of underlying interfacial recombination and ion migration processes.
Review
Chemistry, Multidisciplinary
Matthew Burton, Geraint Howells, Jonathan Atoyo, Matthew Carnie
Summary: Thermoelectric technology can convert wasted heat energy into electrical energy, helping to facilitate the transition to sustainable energy. However, its application has been limited due to high manufacturing costs and geometric constraints. Printing technology offers a potential solution by reducing costs and allowing for customized fabrication of thermoelectric materials.
ADVANCED MATERIALS
(2022)
Article
Energy & Fuels
Harrison Ka Hin Lee, Katherine Stewart, Declan Hughes, Jeremy Barbe, Adam Pockett, Rachel C. Kilbride, Keith C. Heasman, Zhengfei Wei, Trystan M. Watson, Matthew J. Carnie, Ji-Seon Kim, Wing Chung Tsoi
Summary: Recent developments of solution-processed bulk-heterojunction organic photovoltaic (OPV) cells have demonstrated high power conversion efficiencies (PCEs) up to 18% for single-junction devices. Despite a drop in performance, the retaining percentage of the performance is higher than the current market-dominating space PV technology, showing a high potential of OPV cells for space applications.
Article
Energy & Fuels
Gregory Burwell, Oskar J. Sandberg, Wei Li, Paul Meredith, Matt Carnie, Ardalan Armin
Summary: The key parameters for improving the efficiency of large-area indoor photovoltaic devices using drift-diffusion and finite element modeling were examined. The performance of large-area indoor photovoltaic devices at low light intensities is mainly affected by shunt resistance, rather than the sheet resistances of the transparent conductive electrodes. These findings provide an important pathway for the practical implementation of large-area organic photovoltaic cells for indoor applications.
Article
Chemistry, Physical
Michael Spence, Richard Hammond, Adam Pockett, Zhengfei Wei, Andrew Johnson, Trystan Watson, Matthew J. Carnie
Summary: Multijunction solar cells have the potential to exceed the efficiency limit of single-junction devices. To reduce optical reflection losses in silicon-perovskite tandem devices, textured anti-reflective coatings (ARCS) such as textured polydimethylsiloxane (PDMS) can be used. This study found that PDMS film can significantly reduce the reflectance of non-textured silicon-perovskite tandem cells and increase the integrated J(SC) by 3-5% in each sub-cell.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
David Beynon, Ershad Parvazian, Katherine Hooper, James McGettrick, Rahul Patidar, Tom Dunlop, Zhengfei Wei, Peter Davies, Rodrigo Garcia-Rodriguez, Matt Carnie, Matthew Davies, Trystan Watson
Summary: In this study, a fully R2R printable device architecture of perovskite photovoltaics is successfully fabricated using a low-temperature device structure and R2R-compatible solution formulations. The n-i-p device structure of SnO2/perovskite/poly(3,4-ethylenedioxythiophene)/carbon is employed to achieve an ohmic contact and overcome interlayer incompatibilities and recombination losses. The results show that the small-scale device efficiencies reach 13-14%, matching the device performance of evaporated gold electrodes. Furthermore, the entirely R2R-coated perovskite prototype demonstrates a significant breakthrough with over 10% stabilized power conversion efficiency and long-term stability.
ADVANCED MATERIALS
(2023)
Article
Engineering, Chemical
Katherine Rebecca Davies, Michael. G. G. Allan, Sanjay Nagarajan, Rachel Townsend, Vijayshankar Asokan, Trystan Watson, A. Ruth Godfrey, M. Mercedes Maroto-Valer, Moritz. F. F. Kuehnel, Sudhagar Pitchaimuthu
Summary: This study demonstrates a photoelectrocatalysis technique using mesoporous WO3/BiVO4 photoanode for simultaneous degradation of surfactant pollutants and generation of green hydrogen under simulated sunlight. The properties of WO3/BiVO4 films, including morphology, crystallite structure, chemical environment, optical absorbance, and bandgap energy, were examined and discussed.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Proceedings Paper
Krishna Seunarine, Dani Kalarikalayil Raju, Gethin Thomas, Suzanne Thomas, Adam Pockett, Thomas Reitmaier, Cameron Steer, Tom Owen, Yogesh Kumar Meena, Simon Robinson, Jennifer Pearson, Matt Carnie, Deepak Ranjan Sahoo, Matt Jones
Summary: This paper introduces a design that uses light, shade, and reflection to output information and harness energy from light sources. Through cross-cultural workshops and technical validation, the authors demonstrate the feasibility and practicality of these designs.
PROCEEDINGS OF THE 2022 CHI CONFERENCE ON HUMAN FACTORS IN COMPUTING SYSTEMS (CHI' 22)
(2022)
Article
Materials Science, Multidisciplinary
David Richards, Daniel Burkitt, Rahul Patidar, David Beynon, Trystan Watson
Summary: Lightweight flexible perovskite solar cells offer advantages including power to weight, variety of form factor and ability to scale. Roll-to-roll coating technique enables large-scale production and improved performance of the perovskite solar cells.
MATERIALS ADVANCES
(2022)
Review
Chemistry, Physical
Ethan Berger, Mohammad Bagheri, Somayyeh Asgari, Jin Zhou, Mikko Kokkonen, Parisa Talebi, Jingshan Luo, Ana Flavia Nogueira, Trystan Watson, Syed Ghufran Hashmi
Summary: The advancements in organic-inorganic lead halide perovskite-based solar cell technology have made it a competitive option for creating affordable and sustainable electricity. This review focuses on the development of precursor inks for large-area perovskite solar cell technology and highlights their potential applications in building-integrated photovoltaics and IoT devices.
SUSTAINABLE ENERGY & FUELS
(2022)
Article
Environmental Sciences
J. Delgado-Gallardo, G. L. Sullivan, M. Tokaryk, J. E. Russell, G. R. Davies, K. Johns, A. P. Hunter, T. M. Watson, S. Sarp
Summary: The COVID-19 pandemic has led to increased production and use of disposable plastic face masks globally. The disposal of these masks, whether regulated or unregulated, has resulted in the release of micro- and nanopollutants into the environment. This study examines the emission of pollutants from medical-grade disposable plastic face masks when submerged in deionized water, simulating both regulated and unregulated disposal. The study finds that all six brands of masks investigated contain particles and fibers in the micro- and nanoscale, with analysis revealing the presence of heavy metals and organic species related to plastic additives and contaminants.
Article
Materials Science, Multidisciplinary
C. Worsley, D. Raptis, S. M. P. Meroni, R. Patidar, A. Pockett, T. Dunlop, S. J. Potts, R. Bolton, C. M. E. Charbonneau, M. Carnie, E. Jewell, T. Watson
Summary: The study demonstrates that adding methanol solvent can improve the performance and reproducibility of perovskite solar cell precursors based on gamma-valerolactone, achieving higher power conversion efficiency. This not only enhances stability, but also showcases the potential application of green solvent engineering in the development of novel photovoltaics.
MATERIALS ADVANCES
(2022)
Review
Environmental Sciences
Javier Delgado-Gallardo, Geraint L. Sullivan, Peter Esteban, Ziyan Wang, Ozgur Arar, Zhenyu Li, Trystan M. Watson, Sarper Sarp
Summary: Plastic pollution is a significant environmental issue globally, posing challenges to the quality of water bodies, land, and air, as well as potential harm to animals, plants, and humans. Various techniques have been developed by scientists to analyze the type and source of plastics in water bodies, including sampling, separation, purification, and identification.
Article
Chemistry, Physical
Ben Jones, Katherine R. Davies, Michael G. Allan, S. Anantharaj, Ian Mabbett, Trystan Watson, James R. Durrant, Moritz F. Kuehnel, Sudhagar Pitchaimuthu
Summary: The feasibility of using a solar-driven photoelectrochemical process to generate hydrogen fuel and recover heavy metals from metal mine polluted water has been explored. Electron transport from the photoanode to the cathode is crucial for generating hydrogen and scavenging Zn2+ ions in the form of ZnO.
SUSTAINABLE ENERGY & FUELS
(2021)
