Article
Chemistry, Applied
Cosmin Butnarasu, Nadia Barbero, Claudia Barolo, Sonja Visentin
Summary: The study investigated the binding of different squaraine dyes with proteins such as transferrin, fibrinogen, trypsin, and pepsin, and explored the protein-dye interaction mechanism and quantum yield of the complexes. It was found that the surface hydrophobicity of proteins plays a significant role in the fluorescence turn-on response of squaraine dyes, especially for those with shorter alkyl chains.
Article
Chemistry, Multidisciplinary
Arthur Turkin, Marco Holzapfel, Mohit Agarwal, David Fischermeier, Roland Mitric, Ralf Schweins, Franziska Groehn, Christoph Lambert
Summary: A protecting group strategy was used to synthesize a series of longer oligomers of indolenine squaraine dye, which exhibit a distinct solvent dependence in their absorption spectra. This behavior is explained by exciton coupling theory, with H-type coupling attributed to helix folding in solvents with a small Hansen dispersity index.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Physical
Natthapong Monarumit, Thanapong Lhuaamporn, Pornsawat Wathanakul, Chatree Saiyasombat, Wiwat Wongkokua
Summary: Recently, the concept of Fe3+-Ti4+ mixed acceptor states in the energy band gap of sapphire has been proposed as the cause of blue coloration. The blue color in sapphire is faded and turns yellow by beryllium heat treatment. It has been revealed as the color center in Be-treated yellow sapphires. The mechanism underlying these phenomena was explained and discussed in this study.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Abdelbaki Hacini, Ahmad Hadi Ali, Nurul Nadia Adnan
Summary: The structural, optical, and surface properties of indium tin oxide (ITO) thin films deposited by RF magnetron sputtering were investigated in this study. It was found that deposition time affects the crystalline size, surface roughness, optical transmittance, band gap, and refractive index of the ITO thin films. The thickness, elemental concentration, and controllability of the ITO thin films were also discussed in relation to deposition time.
Article
Food Science & Technology
Gema Puertas, Patricia Cazon, Manuel Vazquez
Summary: Membrane separation technology is widely used in research, food and pharmaceutical industries. This study assessed the application of UV-VIS-NIR spectroscopy in quantifying the composition of fractions obtained through membrane separation. The results showed that UV-VIS-NIR spectroscopy combined with chemometric tools is a reliable and efficient method for composition analysis in the membrane filtration process.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Praveen Dhangada, Smita Survase, Madhavi Thakurdesai, Nishant Tayade, M. P. Tirpude
Summary: Swift heavy ion irradiation is a powerful method for creating nanostructures on thin films' surfaces. The localized rise in temperature and rapid energy dissipation lead to the formation of disordered or amorphous ion tracks. Increasing ion fluence and overlapping of these tracks result in surface instabilities and the formation of nanostructures.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Chemistry, Physical
Krunoslav Juraic, Pavo Dubcek, Mario Bohac, Andreja Gajovic, Sigrid Bernstorff, Miran Ceh, Aden Hodzic, Davor Gracin
Summary: Fluorine-doped tin oxide thin films are commonly used in thin-film solar cells as transparent electrodes due to their suitable electrical and optical properties. This study investigates the surface morphology of undoped and doped SnO2 thin films and how they affect the optical properties. Various methods, such as atomic force microscopy, transmission electron microscopy, and grazing-incidence small-angle X-ray scattering, are used to analyze the surface morphology. The results provide insights into the relationship between surface morphology and optical properties.
Article
Engineering, Environmental
Yangzi Shangguan, Renji Zheng, Qiuyue Ge, Xuezhen Feng, Ranhao Wang, Yuanhao Zhou, Siyuan Luo, Lele Duan, Jia Lin, Hong Chen
Summary: The research demonstrates that platinum decoration based on interfacial engineering can effectively enhance the photocatalytic efficiency of semiconductor photocatalysts by modulating band structure and accelerating interfacial reaction dynamics. The Pt/CuFeS2 QDs show improved light absorption capability and faster charge transfer efficiency, leading to a three-fold increase in photocatalytic Cr(VI) reduction efficiency compared to original CuFeS2 QDs.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
C. J. Keerthi, Sayan Halder, Sohel Siraj, Chanchal Chakraborty, Parikshit Sahatiya, Subhradeep Pal
Summary: In this letter, we present a MoSSe-based wideband photodetector (PD) synthesized hydrothermally, which exhibits excellent responsivity and sub-second response time. The device structure consists of MXene/MoSSe/Ag on a Si substrate, with MXene (Ti(3)C(2)Tx) and Ag serving as the cathode and anode contact of the PD, respectively. The Ti(3)C(2)Tx and MoSSe layers are deposited using the spin-coating method, while the Ag electrode is deposited through thermal evaporation. The fabricated PD shows outstanding photodetection capability from 350 nm to 950 nm, with a peak responsivity of 8.89 A.W-1 at 460 nm. The measured external quantum efficiency (EQE) and detectivity (D*) at 420 nm are 24.96% and 9.07 x 10(9) Jones, respectively. Additionally, the PD demonstrates good linearity performance up to 343 K, and the rise and fall times are approximately 0.12 sec and 0.13 sec, respectively.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Pawan Kumar, Nisha, Prosenjit Sarkar, Sachin Singh, B. C. K. Mishra, Ram S. Katiyar
Summary: ZnO thin films were deposited on ITO coated glass substrate using the pulsed laser deposition technique at different annealing temperatures. The topological structure and optical properties of the films were affected by the post-annealing process, as confirmed by AFM and UV-Vis spectroscopy. Raman spectroscopy and XRD were used to confirm the presence of ZnO material. Surface roughness was slightly affected by annealing temperature. The calculated optical bandgap showed a decrease and then an increase with increasing annealing temperatures. The surface roughness of the ZnO thin films was associated with variations in the optical bandgap, suggesting the significant impact of post-growth annealing.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Guangqiang He, Zhihui Xiong, Hui Yang, Ming Yang, Zhixi Li, Tixian Zeng, Xinyou An, Min Zhang
Summary: Cadmium chalcogenide thin films (CdSe0.2Te0.8) were successfully deposited on glass substrates by radio frequency magnetron sputtering, exhibiting a cubic zinc-blende structure with no secondary phases. The band gap of CdSe0.2Te0.8 varied slightly with film thickness in the range of 1.41-1.43 eV, making them potentially suitable for use as a photovoltaic absorption layer in ultra-thin solar cells.
Review
Instruments & Instrumentation
Xuan Qi, Yudong Lian, Luyang Xie, Yulei Wang, Zhiwei Lu
Summary: Water pollution poses a significant threat to public health and social stability due to rapid economic development and urbanization. Therefore, accurate and rapid monitoring of water quality is crucial. Spectral analysis technology, as an environmentally friendly, nondestructive, and efficient detection technology, provides an effective tool for qualitative analysis and quantitative detection of pollutants in the water environment. This paper studies the principles of UV-Vis spectroscopy and near-infrared (NIR) spectroscopy and their applications in water quality detection. It discusses the use of UV-Vis and NIR spectroscopy techniques for detecting various water quality parameters.
APPLIED SPECTROSCOPY REVIEWS
(2023)
Article
Biochemistry & Molecular Biology
Iulia V. Savina, Anton A. Ivanov, Ilia V. Eltsov, Vadim V. Yanshole, Natalia V. Kuratieva, Andrey Y. Komarovskikh, Mikhail M. Syrokvashin, Michael A. Shestopalov
Summary: This study focuses on the synthesis and reactivity of a new square pyramidal molybdenum chalcogenide cluster compound. The obtained compounds were thoroughly characterized and their absorption properties in the UV-visible and near-infrared region were studied.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Food Science & Technology
Patricia Cazon, Daniel Cazon, Manuel Vazquez, Esther Guerra-Rodriguez
Summary: The study found that UV-VIS-NIR spectroscopy combined with chemometric techniques can be used to authenticate the origin and determine the composition of polysaccharide-based films.
FOOD PACKAGING AND SHELF LIFE
(2022)
Article
Chemistry, Analytical
Zhenzhen Xu, Zakir Hussain Talpur, Wuye Yang, Yinran Xiong, Ting Wu, Yuqi Zhang, Xinyi Shen, Yiping Du
Summary: In the extraction process of traditional Chinese medicine, the use of dual-spectrum technology has been found to be effective in the rapid detection of active components. This method provides a simple, stable, and accurate online monitoring system that can analyze and predict the quantitative composition of traditional Chinese medicines.
Article
Chemistry, Multidisciplinary
Shawn M. Huston, Jiuyang Wang, Terry McAfee, Marsha Loth, John E. Anthony, Harald W. Ade, Brad R. Conrad, Daniel B. Dougherty
CRYSTAL GROWTH & DESIGN
(2015)
Article
Nanoscience & Nanotechnology
Benjamin C. Hoffman, Terry McAfee, Brad R. Conrad, Marsha A. Loth, John E. Anthony, Harald W. Ade, Daniel B. Dougherty
ACS APPLIED MATERIALS & INTERFACES
(2016)
Article
Chemistry, Physical
Andrew S. DeLoach, Brad R. Conrad, T. L. Einstein, Daniel B. Dougherty
JOURNAL OF CHEMICAL PHYSICS
(2017)
Article
Chemistry, Physical
Stephen G. Urquhart, Mercedes Martinson, Shaylin Eger, Victor Murcia, Harald Ade, Brian A. Collins
JOURNAL OF PHYSICAL CHEMISTRY C
(2017)
Article
Chemistry, Physical
Shawn M. Huston, Jiuyang Wang, Marsha A. Loth, John E. Anthony, Brad R. Conrad, Daniel B. Dougherty
JOURNAL OF PHYSICAL CHEMISTRY C
(2012)
Article
Chemistry, Physical
Susan Spencer, Jeremy Cody, Scott Misture, Brandon Cona, Patrick Heaphy, Garry Rumbles, John Andersen, Christopher Collison
JOURNAL OF PHYSICAL CHEMISTRY C
(2014)
Article
Chemistry, Physical
M. A. Groce, B. R. Conrad, W. G. Cullen, A. Pimpinelli, E. D. Williams, T. L. Einstein
Article
Chemistry, Physical
Prabodh Dhakal, Thomas Ferron, Awwad Alotaibi, Victor Murcia, Obaid Alqahtani, Brian A. Collins
Summary: The study reveals a causal relationship between mixed donor-acceptor interfaces and charge generation in polymer-fullerene solar cells, demonstrating the significant impact of mixed phases on organic photovoltaic performance compared to pure aggregated domains at the interface. The analysis eliminates alternative explanations for performance trends, establishing causality and highlighting the importance of sharp interfaces for realizing theoretical efficiency limits in organic photovoltaics.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Obaid Alqahtani, Seyed Mehrdad Hosseini, Thomas Ferron, Victor Murcia, Terry McAfee, Kevin Vixie, Fei Huang, Ardalan Armin, Safa Shoaee, Brian A. Collins
Summary: Through studying the NT812/PC71BM system, it has been found that charge recombination can be highly suppressed at thicknesses >400 nm. Large well-ordered conduits and sharp interfaces between domains in the nanomorphology help enhance charge collection, allowing for optimal performance in thick active layers for OSCs.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Obaid Alqahtani, Jie Lv, Tongle Xu, Victor Murcia, Thomas Ferron, Terry McAfee, Devin Grabner, Tainan Duan, Brian A. Collins
Summary: This study presents the device performance and morphology of two polymer-NFA organic solar cells that are highly sensitive to the solvent additive chloronaphthalene. Adding 1% chloronaphthalene significantly improves device efficiency, but concentrations slightly above the optimum hinder device performance.
Article
Engineering, Electrical & Electronic
Andrew M. Zeidell, Nathanael D. Cox, Shawn M. Huston, Jamie E. Rossi, Brian J. Landi, Brad R. Conrad
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
(2015)
Proceedings Paper
Energy & Fuels
Susan Spencer, Victor Murcia, Obadiah Reid, Garry Rumbles, Kevin Belfield, Jeremy Cody, Christopher Collison
2012 38TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
(2012)
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)