Article
Nanoscience & Nanotechnology
Iain Hamilton, Minwon Suh, Jim Bailey, Donal D. C. Bradley, Ji-Seon Kim
Summary: Modification of the pi-conjugated backbone structure of CPEs and LEPs allows for control of the CPE/LEP interface properties, leading to improved efficiency and response time in PLED devices. However, the formation of a type II heterojunction at the CPE/LEP interface causes interfacial luminance quenching and reduces device efficiency. A deep CPE LUMO is found to be beneficial for fast device turn-on.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Maopeng Xu, Desui Chen, Jian Lin, Xiuyuan Lu, Yunzhou Deng, Siyu He, Xitong Zhu, Wangxiao Jin, Yizheng Jin
Summary: Researchers developed a set of NiOx HILs with controlled work functions for QLEDs, finding that using HILs with higher work functions can improve efficiency roll-off and operational stability.
Article
Chemistry, Physical
Maopeng Xu, Desui Chen, Jian Lin, Xiuyuan Lu, Yunzhou Deng, Siyu He, Xitong Zhu, Wangxiao Jin, Yizheng Jin
Summary: Researchers developed a new type of hole-injection layer with controlled work functions to improve the efficiency and stability of quantum-dot light-emitting diodes (QLEDs). The study found that hole-injection layers with higher work functions can enhance the efficiency and lifetime of the devices. This research provides important guidance for the future design of QLEDs.
Article
Chemistry, Physical
D. R. Arunkumar, S. Anjelin Ursula Portia, K. Ramamoorthy
Summary: In this study, high performance dye sensitized solar cells based on Tb-doped BaTiO3 thin films were prepared using three different techniques. The SPC-assisted Tb:BTO thin films showed superior properties in terms of visible light absorption and photo conversion efficiency, with higher surface area and specific porous structure compared to other techniques.
SURFACES AND INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
John A. Tomko, Evan L. Runnerstrom, Yi-Siang Wang, Weibin Chu, Joshua R. Nolen, David H. Olson, Kyle P. Kelley, Angela Cleri, Josh Nordlander, Joshua D. Caldwell, Oleg V. Prezhdo, Jon-Paul Maria, Patrick E. Hopkins
Summary: An energy transduction mechanism across metal/semiconductor interfaces has been demonstrated through ultrafast infrared spectroscopy, relying on electron-electron energy transfer instead of charge transport. The study shows a novel mechanism where hot electrons in metal transfer their energy to free electrons in semiconductor without charge transfer, providing a unique means to modulate plasmonic interactions. These findings are supported by optical modeling and first-principle calculations, indicating the potential for improved plasmonic enhancement beyond traditional charge injection mechanisms.
NATURE NANOTECHNOLOGY
(2021)
Article
Plant Sciences
Sarah E. Flannery, Christopher Hepworth, William H. J. Wood, Federica Pastorelli, Christopher N. Hunter, Mark J. Dickman, Philip J. Jackson, Matthew P. Johnson
Summary: This study investigated the changes in thylakoid protein levels during long-term acclimation of Arabidopsis to different light intensities and found correlations with key photosynthetic parameters. High light promoted improved photosynthetic capacity and cyclic electron transport, while low light favored slowly reversible non-photochemical quenching. The data provide insights into how Arabidopsis tunes photosynthetic electron transfer and its regulation during developmental acclimation to light intensity.
Article
Chemistry, Multidisciplinary
Yunkyu Park, Hyeji Sim, Kyung-Yeon Doh, Minguk Jo, Donghwa Lee, Si -Young Choi, Junwoo Son
Summary: This study demonstrates the importance of electron supply in controlling charged ionic flow and proposes a strategy for ion-defect-induced emergent properties at interfaces.
Article
Materials Science, Coatings & Films
Le Wang, Yingge Du, Scott A. Chambers
Summary: The behavior and functionality of semiconductor heterojunctions rely on band alignment, traditionally measured using x-ray photoelectron spectroscopy. A new study shows that band alignment can also be determined using a single core-level photoelectron spectrum for a common element in both materials, based on energy splitting between photoemission features from the two materials.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2021)
Article
Chemistry, Physical
Shunta Nishioka, Takayoshi Oshima, Shota Hirai, Daiki Saito, Koya Hojo, Thomas E. Mallouk, Kazuhiko Maeda
Summary: Dye-sensitized photocatalysts combining Pt-intercalated HCa2Nb3O10 nanosheets and Ru(II) complexes were used for H-2 evolution systems, with surface modification playing a crucial role in enhancing the efficiency. Detailed analysis revealed different states of the complexes on the nanosheet surface, while the Al2O3 modifier inhibited back electron-transfer events and electron injection, impacting H-2 evolution rates.
Article
Electrochemistry
Li-Syuan Chen, Manik Chandra Sil, Yu-Hsin Lee, Heng-Jui Liu, Chih-Ming Chen
Summary: The study introduces a new hybrid scattering layer consisting of micro-sized sericite flakes and TiO2 nanoparticles to enhance the light harvesting performance of dye-sensitized solar cells. Material optimization using different sizes of TiO2 nanoparticles led to improved power conversion efficiency under various lighting conditions. The addition of sericite in the scattering layer provides a new pathway for preparing more efficient light harvesting layers.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Subhadip Goswami, Jierui Yu, Sameer Patwardhan, Pravas Deria, Joseph T. Hupp
Summary: In this study, the antenna behavior of chromophore assemblies within a zirconium-based MOF, NU-1000, was investigated using amplified emission quenching. It was found that a photogenerated molecular exciton can sample around 300 chromophoric linkers and achieve a single-step energy transfer or exciton-hopping time of a few picoseconds. These results suggest that MOFs like NU-1000 could provide a significant antenna size and potentially be utilized in solar energy conversion devices with suitable catalysts immobilized on the MOF node.
ACS ENERGY LETTERS
(2021)
Article
Biochemistry & Molecular Biology
Manal Alkhabbas, Fadwa Odeh, Khitam Alzughoul, Razan Afaneh, Waed Alahmad
Summary: TiO2-Kaolinite nanocomposite photocatalysts were synthesized using the sol-gel method, with titanium isopropoxide/HCl as reactants and Jordanian kaolinite clay as a support material. The increase in TiO2 content led to increased intensity of anatase peaks in XRD measurements and increased peaks of Ti-O-Si in FTIR. The nanocomposites showed high photocatalytic activity in degrading Congo-red dye under sunlight.
Article
Engineering, Electrical & Electronic
Libo Yu, Zhen Li
Summary: Researchers have developed a hierarchical microstructure for photoanode materials in dye sensitized solar cells (DSSC). The materials demonstrate enhanced light scattering, increased specific area, reduced charges recombination, and improved power conversion efficiency.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Deep Sekhar Biswas, Nina Melnychuk, Caterina Severi, Pascal Didier, Andrey S. Klymchenko
Summary: Light-harvesting is a fundamental process in nature that drives the development of artificial systems for various applications. Researchers have discovered that using blank hydrophobic salts can suppress dye aggregation within nanoparticles, improving their fluorescence properties and enabling efficient energy transfer and antenna effects.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Mulugeta Tesema Efa, Jheng-Chang Huang, Toyoko Imae
Summary: This study reports on enhancing the performance of DSSCs through the use of cascade FRET phenomenon, including the use of composites with carbon dot (Cdot) to increase the power conversion efficiency. Utilizing a photosensitized system based on cascade FRET can enhance the light-harvesting properties of DSSCs.
Article
Chemistry, Multidisciplinary
Francesco Ambrosio, Julia Wiktor, Filippo De Angelis, Alfredo Pasquarello
ENERGY & ENVIRONMENTAL SCIENCE
(2018)
Article
Chemistry, Multidisciplinary
Daniele Meggiolaro, Silvia G. Motti, Edoardo Mosconi, Alex J. Barker, James Ball, Carlo Andrea Riccardo Perini, Felix Deschler, Annamaria Petrozza, Filippo De Angelis
ENERGY & ENVIRONMENTAL SCIENCE
(2018)
Article
Chemistry, Physical
Edoardo Mosconi, Boualem Merabet, Daniele Meggiolaro, Ali Zaoui, Filippo De Angelis
JOURNAL OF PHYSICAL CHEMISTRY C
(2018)
Article
Chemistry, Multidisciplinary
Simone Latini, Enrico Ronca, Umberto De Giovannini, Hannes Huebener, Angel Rubio
Article
Chemistry, Physical
Diego Cesario, Francesca Nunzi, Leonardo Belpassi, Fernando Pirani, Enrico Ronca, Francesco Tarantelli
JOURNAL OF PHYSICAL CHEMISTRY A
(2019)
Article
Chemistry, Physical
Qiming Sun, Xing Zhang, Samragni Banerjee, Peng Bao, Marc Barbry, Nick S. Blunt, Nikolay A. Bogdanov, George H. Booth, Jia Chen, Zhi-Hao Cui, Janus Juul Eriksen, Yang Gao, Sheng Guo, Jan Hermann, Matthew R. Hermes, Kevin Koh, Peter Koval, Susi Lehtola, Zhendong Li, Junzi Liu, Narbe Mardirossian, James D. McClain, Mario Motta, Bastien Mussard, Hung Q. Pham, Artem Pulkin, Wirawan Purwanto, Paul J. Robinson, Enrico Ronca, Elvira Sayfutyarova, Maximilian Scheurer, Henry F. Schurkus, James E. T. Smith, Chong Sun, Shi-Ning Sun, Shiv Upadhyay, Lucas K. Wagner, Xiao Wang, Alec White, James Daniel Whitfield, Mark J. Williamson, Sebastian Wouters, Jun Yang, Jason M. Yu, Tianyu Zhu, Timothy C. Berkelbach, Sandeep Sharma, Alexander Sokolov, Garnet Kin-Lic Chan
JOURNAL OF CHEMICAL PHYSICS
(2020)
Article
Physics, Multidisciplinary
Mario Motta, Claudio Genovese, Fengjie Ma, Zhi-Hao Cui, Randy Sawaya, Garnet Kin-Lic Chan, Natalia Chepiga, Phillip Helms, Carlos Jimenez-Hoyos, Andrew J. Millis, Ushnish Ray, Enrico Ronca, Hao Shi, Sandro Sorella, Edwin M. Stoudenmire, Steven R. White, Shiwei Zhang
Article
Physics, Multidisciplinary
Tor S. Haugland, Enrico Ronca, Eirik F. Kjonstad, Angel Rubio, Henrik Koch
Article
Chemistry, Physical
Tor S. Haugland, Christian Schaefer, Enrico Ronca, Angel Rubio, Henrik Koch
Summary: This study investigates how strong light-matter coupling can modify intermolecular forces, demonstrating the fundamental role of electron-photon correlation in describing these interactions. By tuning the electromagnetic field inside an optical cavity, ground state properties, solvent effects, and intermolecular interactions can be controlled and manipulated for molecules and materials.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Chemistry, Physical
Dominik Sidler, Michael Ruggenthaler, Christian Schaefer, Enrico Ronca, Angel Rubio
Summary: This article provides a brief introduction to the theoretical complexity of polaritonic chemistry and emphasizes the importance of ab initio methods. It proposes novel ideas and research avenues regarding quantum collectivity and resonance phenomena in reaction rates under vibrational strong coupling. A computationally efficient Langevin framework based on quantum electrodynamical density-functional theory is also suggested, revealing cavity-induced non-equilibrium nuclear dynamics. Overall, the latest ab initio results suggest a paradigmatic shift in the understanding of ground-state chemical reactions under vibrational strong coupling.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Multidisciplinary Sciences
Rosario R. Riso, Tor S. Haugland, Enrico Ronca, Henrik Koch
Summary: The authors introduce a fully consistent ab-initio method of molecular orbital theory applicable to material systems in quantum electrodynamics environments. The method can be used to predict and explain modifications of molecular properties due to cavity induced effects.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Rosario R. Riso, Tor S. Haugland, Enrico Ronca, Henrik Koch
Summary: This study suggests that there is still an interaction between free electrons and vacuum fields inside an optical cavity, and there is also an interaction between quantized fields and ionized molecules. The study further presents a theoretical framework to explain the field-induced correlation and demonstrates the significant impact of this interaction on the ionization potential of organic molecules.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Multidisciplinary Sciences
Christian Schaefer, Johannes Flick, Enrico Ronca, Prineha Narang, Angel Rubio
Summary: The study reveals the microscopic mechanism behind the reduced reaction rate observed in cavity-induced resonant vibrational strong light-matter coupling using quantum-electrodynamical density-functional theory. The cavity mode acts as a mediator between different vibrational modes, redistributing vibrational energy and ultimately inhibiting the reaction.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Multidisciplinary
Rosario R. Riso, Laura Grazioli, Enrico Ronca, Tommaso Giovannini, Henrik Koch
Summary: The development of efficient techniques to distinguish mirror images of chiral molecules is crucial in chemistry and physics. Enantiomers share similar molecular properties, except for the absorption of circularly polarized light. Purifying enantiomers is challenging and requires specialized equipment. Strong coupling between quantized fields and matter, such as in optical cavities, is a promising method to modify molecular processes noninvasively.
Article
Materials Science, Multidisciplinary
Xiao Wang, Enrico Ronca, Michael A. Sentef