Article
Materials Science, Multidisciplinary
Alaa Y. Y. Ali, Natalie P. P. Holmes, Nathan Cooling, John Holdsworth, Warwick Belcher, Paul Dastoor, Xiaojing Zhou
Summary: The performance of P3HT:PCBM organic photovoltaic devices is influenced by environmental conditions, thermal annealing, and material blend composition. Optimized laboratory fabricated devices show that humidity during fabrication can cause electrode oxidation and photo-oxidation, while thermal annealing can enhance device performance by modifying the morphology of the active layer. Additionally, the choice of PEDOT:PSS material affects the performance of P3HT:PCBM devices.
Article
Materials Science, Multidisciplinary
Mahmoud N. Zidan, Tawfik Ismail, Irene S. Fahim
Summary: A bulk heterojunction organic solar cell using a blend of P3HT and PCBM as the photoactive layer was simulated, showing varying optical and electrical performance at different operating temperatures with better efficiency in flexible devices. The study also revealed that a maximum power conversion efficiency is achieved with a 220 nm thick active layer and reducing the thickness of ITO and PEDOT: PSS layers can minimize optical losses.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Chemistry, Multidisciplinary
David Muller, Ershuai Jiang, Laura Campos Guzman, Paula Rivas Lazaro, Clemens Baretzky, Shankar Bogati, Birger Zimmermann, Uli Wurfel
Summary: Organic Photovoltaics (OPV) is a promising technology for powering IoT devices with artificial illumination. OPVs can achieve efficiencies as high as 30.2% under warm white LED light and show remarkable stability under indoor illumination. A study on cost-effective ITO-free cell stack with absorber materials processed from non-halogenated solvents has achieved efficiencies up to 21% with outstanding stabilities. Further efficiency increase can be expected with a wide range of potential organic semiconducting materials.
Article
Chemistry, Physical
Timo Raab, Tim Mayer, Tobias Seewald, Lukas Schmidt-Mende
Summary: This study investigates the spin coating process of a P3HT/PC71BM blend and reveals that it can be divided into three phases. The crystallization phase has the most significant influence on the final morphology of the film.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Energy & Fuels
Eduardo Henrique dos Santos Rosa, Edemir Luiz Kowalski, Luiz Felipe Ribeiro Barrozo Toledo
Summary: This study simulates the power conversion efficiency of organic solar cells (OSCs) and optimizes the thickness of the active layer for better efficiency. By comparing the simulated efficiency results with real data, there is an average increase of 16% in efficiency.
Article
Materials Science, Multidisciplinary
Xueqiao Zhang, John G. Labram
Summary: This article examines the working mechanism of retinomorphic sensors based on organic semiconductors as the active layer. By varying the ratio of P3HT to PCBM in the absorption layer, the optimal performance was found.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Polymer Science
Feng Zhao, Xiangjun Zheng, Shuixing Li, Kangrong Yan, Weifei Fu, Lijian Zuo, Hongzheng Chen
Summary: Organic solar cells (OSCs) have the potential for low-cost and greener solar energy utilization. This study presents high-performance OSC devices using non-halogen solvents and additives, demonstrating the advantages of green processing, flexibility, and upscaling.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Linge Xiao, Yanxun Li, Hong Zhang, Gaosheng Huang, Qian Cheng, Shilin Li, Yuan Zhang, Huiqiong Zhou
Summary: Semitransparent organic photovoltaics (ST-OPVs) have attracted attention for their high power generation, thermal insulation, and aesthetic features. However, traditional optical evaluation only focuses on transmission properties and ignores reflection behaviors. In this study, an optical microcavity architecture was introduced into ST-OPVs to achieve high transmittance homogeneity and controllable reflection by tuning the thickness of individual layers. A set of parameters was proposed to quantitatively describe the optical characteristics.
ADVANCED MATERIALS
(2023)
Article
Polymer Science
Sohyun Park, Seungsun Choi, Hyunchan Lee, Jiyeon Lee, Yunseo Woo, Yu-Jin Jung, Young Mee Jung, Junkyeong Jeong, Jeehong Park, Yeonjin Yi, Soohyung Park, Hyunbok Lee
Summary: This study investigated the effect of gamma-ray irradiation on the electronic structures of organic semiconductor films. It was found that PCBM showed a higher degree of oxidation compared to P3HT, resulting in significant oxidation reactions. Additionally, the chemical interactions triggered by gamma rays altered the electronic structures of the semiconductors.
POLYMER DEGRADATION AND STABILITY
(2021)
Article
Chemistry, Multidisciplinary
William James, Colette M. Sullivan, Nicholas Marshall
Summary: The study found that EDOT and 3MOT can form core-shell composites directly in HKUST-1, while they can also be loaded into the pores of HKUST-1 without reaction when dissolved in hexanes, resulting in a filled composite. Additionally, 3HOT can also be loaded into HKUST-1 in a similar manner. Heating the hexane-loaded composites can lead to the formation of either core-shell or filled composites, depending on the reaction conditions chosen.
Article
Energy & Fuels
S. S. Rawat, A. Rana, Ashish Kumar, Sanjay Kumar Swami, R. Srivastava, C. K. Suman
Summary: The nickel phthalocyanine (NiPc) thin film is investigated for its magneto-conductance and optoelectrical properties. It is observed that the NiPc thin film has a potential application in polymer solar cells. The study discusses the spin interaction, relaxation time of carriers, and traps filling phenomena using magneto-conductance and impedance spectroscopy techniques. Introduction of NiPc thin film as a hole interface buffer layer in organic solar cells improves the device performance by reducing the series and shunt resistance.
Article
Nanoscience & Nanotechnology
Hailin Pan, Jie Wang, Zhi Chen, Ziqi Su, Zheng Tang, Zaifei Ma
Summary: The impact of surface modification by insulating polymers on the ultraviolet-enhanced conductivity of non-atomically doped ZnO films is investigated. Polymer modifiers rich in amino and hydroxyl groups are effective in increasing the concentration of oxygen vacancies and the conductivity of the films. The highest conductivity achieved is over 1000 S cm(-1) using polyethylenimine ethoxylated as the modifier for NAD-ZnO films. Replacement of ITO in organic photovoltaic devices with a ZnO/PEIE electrode is successfully realized, and the devices exhibit comparable or better performance than ITO-based devices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Guillaume Freychet, Yuxuan Huang, Wen Liang Tan, Peter A. Gilhooly-Finn, Christian B. Nielsen, Henning Sirringhaus, Christopher R. McNeill
Summary: This study investigates the relationship between molecular ordering and optoelectronic properties in semicrystalline polymer P3HT. By using polarized tender X-rays tuned to the sulfur K-edge, strong contrast is generated to easily observe the layering sequence of thin film P3HT samples. The results of this study provide promising techniques for studying nanoscale ordering in not only semiconducting polymers, but also other soft matter systems.
ACS MATERIALS LETTERS
(2022)
Proceedings Paper
Computer Science, Theory & Methods
Loren Mora Pastrana, Jose Enrique Eirez Izquierdo, Dennis Cabrera Garcia, Oswaldo Hideo Ando Junior, Mariane Yuka Tsubaki Oide, Viviane Nogueira Hamanaka, Marco Roberto Cavallari, Fernando Josepetti Fonseca
Summary: In this study, the effect of deposition methods on the performance of organic solar cells using PEDOT:PSS and P3HT:PCBM was thoroughly investigated using optical, morphological, and structural characterization techniques. Process parameters such as surface treatment, filtration, concentration, additives, and deposition speed were studied to optimize OSC performance. The deposition techniques of spin and blade coating significantly impacted the thin-film crystallinity and absorption rate of P3HT:PCBM.
INTERNATIONAL CONFERENCE ON ELECTRICAL, COMPUTER AND ENERGY TECHNOLOGIES (ICECET 2021)
(2021)
Article
Polymer Science
Md Faizul Islam, Emely Adame-Ramirez, Eric R. Williams, Preecha Kittikhunnatham, Andrew Wijesekera, Siteng Zhang, Ting Ge, Morgan Stefik, Mark D. Smith, Perry J. Pellechia, Andrew B. Greytak, Linda S. Shimizu
Summary: In this study, pyrrole and ethylenedioxythiophene monomers are loaded into a self-assembled bis-urea host and polymerized within its nanochannels, dramatically altering the properties of the crystalline complexes. The findings suggest that supramolecular polymerization strategies have the potential to easily modulate the properties of nanostructured materials.
Article
Chemistry, Physical
Louise B. Hamdy, Russell J. Wakeham, Marco Taddei, Andrew R. Barron, Enrico Andreoli
CHEMISTRY OF MATERIALS
(2019)
Review
Chemistry, Physical
Saeed Khodabakhshi, Pasquale F. Fulvio, Enrico Andreoli
Review
Chemistry, Physical
Sandra Hernandez-Aldave, Enrico Andreoli
Article
Chemistry, Physical
Saeed Khodabakhshi, Sajad Kiani, Yubiao Niu, Alvin Orbaek White, Wafa Suwaileh, Richard E. Palmer, Andrew R. Barron, Enrico Andreoli
Summary: A new environmentally friendly method for synthesizing ultramicroporous carbon spheres was developed using a simple one-step non-catalytic CVD process at 800 degrees C. The carbon spheres exhibited high CO2 capture capacity and good regeneration performance.
Article
Chemistry, Multidisciplinary
Stephen J. Shearan, Jannick Jacobsen, Ferdinando Costantino, Roberto D'Amato, Dmitri Novikov, Norbert Stock, Enrico Andreoli, Marco Taddei
Summary: Two perfluorinated Ce-IV-based MOFs, F4_UiO-66(Ce) and F4_MIL-140A(Ce), can form pure or mixed phases depending on reaction parameters. Heating accelerates nucleation, while the addition of AcOH leads to the formation of mixed-phase products.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Editorial Material
Chemistry, Physical
Enrico Andreoli
Summary: Research has found that using a polymer-modified copper catalyst can significantly enhance the selectivity of CO2 conversion to ethylene, with a production rate of 87%.
Article
Chemistry, Physical
Saeed Khodabakhshi, Marco Taddei, Jennifer A. Rudd, Matthew J. McPherson, Yubiao Niu, Richard E. Palmer, Andrew R. Barron, Enrico Andreoli
Summary: Highly microporous carbons were prepared through two facile synthetic strategies, achieving diverse morphologies, textural properties, and oxygen contents, with assessed CO2 and N-2 sorption properties. The study found that at low pressure, the simultaneous presence of large ultra-micropore volume and high oxygen content in the sorbents contributed to competitive CO2 uptake and CO2/N-2 selectivity, suggesting the importance of interplay between ultra-microporosity and oxygen doping in determining CO2/N-2 separation properties.
Article
Chemistry, Physical
Saeed Khodabakhshi, Pasquale F. Fulvio, Ahmad Sousaraei, Sajad Kiani, Yubiao Niu, Richard E. Palmer, Winson C. H. Kuo, Jennifer Rudd, Andrew R. Barron, Enrico Andreoli
Summary: Nitric acid treatment of Black Pearls 2000 leads to the synthesis of micrometer long multilayer carbon nanoribbons with high oxygen content and nitrogen doping, while treatment of other grades of carbon black yields irregular graphene oxide fragments or carbon quantum dots. Nitric acid treatment of carbon materials is shown to be a powerful tool for synthesizing technology-relevant carbon nanoribbons, unlocking the potential of applying this straightforward oxidation chemistry to inexpensive and commercially available carbon black.
Article
Materials Science, Multidisciplinary
Mauricio Pavia, Melanie Emo, Fahad Alnjiman, Enrico Andreoli, Jean-Francois Pierson, Emmanuel Flahaut, Ewa Kazimierska, Brigitte Vigolo
Summary: This work explores a novel approach to disperse purified double-walled carbon nanotubes in high ionic strength aqueous media, i.e. a copper ion solution, to further prepare double-walled carbon nanotubes/Cu composites by co-electrodeposition. The capability of different surfactants to disperse the carbon nanotubes in the copper ion solution is analyzed, and Pluronic-P123 shows the best dispersive level. The dispersion mechanism suggests that the hydrophobic nature of Pluronic-P123 promotes efficient steric repulsions, enabling stable dispersion in the copper electrolyte.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Review
Chemistry, Physical
Sandra Hernandez-Aldave, Enrico Andreoli
Summary: Scientists and engineers worldwide are developing carbon dioxide utilisation technologies to support net-zero targets; the experience from the chlor-alkali electrochemical industry can help address challenges in CO2 electrolysis.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Louise B. Hamdy, Abel Gougsa, Wing Ying Chow, James E. Russell, Enrique Garcia-Diez, Viktoriia Kulakova, Susana Garcia, Andrew R. Barron, Marco Taddei, Enrico Andreoli
Summary: New self-supported polyamine CO2 adsorbents were prepared by cross-linking branched polyethyleneimine (PEI) with a specific compound. The adsorbent showed high CO2 adsorption and fast kinetics at ambient temperature, with a CO2/N-2 selectivity equal to that of highly selective metal-organic frameworks. The presence of water was found to enhance CO2 uptake capacity and promote strong chemisorption. However, the CO2 uptake enhancement was highly dependent on relative humidity and CO2 partial pressure conditions.
MATERIALS ADVANCES
(2022)
Review
Materials Science, Multidisciplinary
Louise B. Hamdy, Chitrakshi Goel, Jennifer A. Rudd, Andrew R. Barron, Enrico Andreoli
Summary: The article discusses the role of amines and polyamines in solid CO2 sorption and CO2 electrochemical reduction for reducing global atmospheric CO2 concentration. It also highlights the challenges in scaling up lab-scale research to pilot or industrial applications, as well as defining effective adsorbent parameters and testing methods.
MATERIALS ADVANCES
(2021)
Article
Chemistry, Multidisciplinary
Jennifer A. Rudd, Sandra Hernandez-Aldave, Ewa Kazimierska, Louise B. Hamdy, Odin J. E. Bain, Andrew R. Barron, Enrico Andreoli
Summary: In this study, a porous copper electrode capable of catalyzing the reduction of carbon dioxide into higher-value products was fabricated and investigated. The morphological and crystal structure of the foams under different conditions were analyzed, along with their performance as a catalyst. Alterations in the morphology, crystallinity and surface composition of the catalyst were found to be conducive to the deactivation of the copper foams after CO2 electrolysis.
CHEMISTRY-SWITZERLAND
(2021)
Article
Chemistry, Physical
Athanasios Koutsianos, Louise B. Hamdy, Chun-Jae Yoo, Jason J. Lee, Marco Taddei, Jagoda M. Urban-Klaehn, Jerzy Dryzek, Christopher W. Jones, Andrew R. Barron, Enrico Andreoli
Summary: Polyamine-based carbon dioxide sorbents face challenges in balancing amine content and efficiency. By incorporating short fluoroalkyl chains into poly(allylamine) (PAA) and cross-linking with C-60, additional diffusion pathways are generated, resulting in increased CO2 uptake and amine efficiency in diluted gas streams at room temperature. The presence of void volume in fluoroalkyl-functionalized PAA sorbents disrupts the strong amine hydrogen bonding network, leading to improved performance of the sorbent.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Inorganic & Nuclear
Marco Taddei, Matthew J. McPherson, Abel Gougsa, Jamie Lam, Jack Sewell, Enrico Andreoli
Article
Materials Science, Multidisciplinary
Katerina Skopalova, Itana Nusa Bubanja, Dragomir Stanisavljev, Nikola Cvjeticanin, Vera Kasparkova, Eliska Dad'ova, Erika Pavlikova, Marek Koutny, Marija Gizdavic-Nikolaidis, Petr Humpolicek
Summary: This study compares the biological properties of PANI prepared by different synthesis methods and oxidizing agents, which improves its potential applications in the biomedical field.
Article
Materials Science, Multidisciplinary
Hui-Ping Li, Cai-Yan Gao, Zhi-Ping Chen, Xin-Heng Fan, Lian-Ming Yang
Summary: In this study, a novel type of D-A non-fused-ring copolymers was designed and synthesized to overcome the trade-off relationship between electrical conductivity and Seebeck coefficient in organic semiconductors. The incorporation of fluorine atoms into the polymer backbone effectively increased the ordered degree of molecular stacking and improved both the electrical conductivity and Seebeck coefficient. The bimodal orientation of polymers played a crucial role in decoupling the correlation between electrical conductivity and Seebeck coefficient.
Article
Materials Science, Multidisciplinary
Mansour A. S. Salem, Amjad Mumtaz Khan, Hatem A. M. Saleh, Khalil M. A. Qasem, Mizna Ahmed, Aadil Shafi Bhat, Abdulaziz Abdullah Qasem Ali, Younes S. A. Ghanem, Ali Alrabie, Abdel-Basit Al-Odayni, Waseem Sharaf Saeed, Basheer Al-Anesi
Summary: This research focuses on the versatile substance, polyaniline/layered double hydroxide (PANI@Nd-Co/LDH), under solvothermal conditions. A thorough analysis of its structure and morphology was conducted using various analytical methods. The findings showed that PANI@Nd-Co/LDH exhibited highly sensitive and specific fluorescence detection of Pb(II) and Al(III), outperforming other heavy metal ions. The sensor demonstrated a turn-off fluorescence response for Pb(II) ions and a turn-on fluorescence response for Al(III) ions. The minimum detectable limits (MDL) were determined to be 9.6 nM for Pb(II) and 220 nM for Al(III). PANI@Nd-Co/LDH could be easily regenerated and reused for multiple cycles. The detection mechanisms involved the inner filter effect (IFE) for Pb(II) and the chelation-enhanced fluorescence (CHEF) effect for Al(III). These results highlight the excellent potential of PANI@Nd-Co/LDH in the detection and recognition of Pb(II) and Al(III) ions.
