Article
Multidisciplinary Sciences
Shuo Dong, Samuel Beaulieu, Malte Selig, Philipp Rosenzweig, Dominik Christiansen, Tommaso Pincelli, Maciej Dendzik, Jonas D. Ziegler, Julian Maklar, R. Patrick Xian, Alexander Neef, Avaise Mohammed, Armin Schulz, Mona Stadler, Michael Jetter, Peter Michler, Takashi Taniguchi, Kenji Watanabe, Hidenori Takagi, Ulrich Starke, Alexey Chernikov, Martin Wolf, Hiro Nakamura, Andreas Knorr, Laurenz Rettig, Ralph Ernstorfer
Summary: In this study, the authors investigated the interfacial charge/energy transfer dynamics in a WSe2/graphene heterostructure. They discovered an energy transfer mechanism from WSe2 to graphene mediated by an interfacial Meitner-Auger process. This results in a transient hole distribution in the Dirac cone at energies larger than the photon energy of the optical excitation.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Shuo Dong, Samuel Beaulieu, Malte Selig, Philipp Rosenzweig, Dominik Christiansen, Tommaso Pincelli, Maciej Dendzik, Jonas D. Ziegler, Julian Maklar, R. Patrick Xian, Alexander Neef, Avaise Mohammed, Armin Schulz, Mona Stadler, Michael Jetter, Peter Michler, Takashi Taniguchi, Kenji Watanabe, Hidenori Takagi, Ulrich Starke, Alexey Chernikov, Martin Wolf, Hiro Nakamura, Andreas Knorr, Laurenz Rettig, Ralph Ernstorfer
Summary: In this study, the authors investigate the interfacial charge/energy transfer dynamics in a WSe2/graphene heterostructure. They unveil an energy transfer mechanism from WSe2 to graphene mediated by an interfacial Meitner-Auger process, resulting in a transient hole distribution in the Dirac cone at energies larger than the photon energy of the optical excitation.
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Qianqian Du, Shuchao Qin, Zhifeng Wang, Yuquan Gan, Yuting Zhang, Linsheng Fan, Yunlong Liu, Shuhong Li, Ruixin Dong, Cailong Liu, Wenjun Wang, Fengqiu Wang
Summary: Rubrene single crystals have been fabricated into a sensitive and ultrafast organic phototransistor, covering the UV to visible range with high responsivity and detectivity. The device also shows gate-tunable response times and a cutoff frequency of 4 kHz, demonstrating great potential for flexible optoelectronics.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Multidisciplinary Sciences
Peter J. Budden, Leah R. Weiss, Matthias Mueller, Naitik A. Panjwani, Simon Dowland, Jesse R. Allardice, Michael Ganschow, Jan Freudenberg, Jan Behrends, Uwe H. F. Bunz, Richard H. Friend
Summary: TTBP is a fully efficient singlet exciton fission material with high stability and luminescence yield, capable of forming triplet pairs within 100ps and separating into free triplet excitons within 65ns. It exhibits high photoluminescence efficiency and has great potential for applications in the field of photovoltaics.
NATURE COMMUNICATIONS
(2021)
Article
Optics
Johann A. Preuss, Daniel Groll, Robert Schmidt, Thilo Hahn, Pawel Machnikowski, Rudolf Bratschitsch, Tilmann Kuhn, Steffen Michaelis De Vasconcellos, Daniel Wigger
Summary: This study demonstrates coherent state manipulation of a single color center in hexagonal boron nitride (hBN) and investigates the coupling between the electronic system and phonons. The results reveal the application of quantum control techniques in both phonon-assisted and resonant excitation, paving the way for ultrafast phonon quantum state control on the nanoscale and hybrid quantum technologies.
Article
Chemistry, Physical
Alan R. Bowman, Samuel D. Stranks, Bartomeu Monserrat
Summary: The study of the interface between singlet fission molecules and low-band-gap halide pervoskites showed that triplet transfer was not observed, and first-principles calculations indicated weak interaction at the interface between tetracene and cesium lead iodide.
CHEMISTRY OF MATERIALS
(2022)
Article
Multidisciplinary Sciences
Helene Seiler, Marcin Krynski, Daniela Zahn, Sebastian Hammer, Yoav William Windsor, Thomas Vasileiadis, Jens Pflaum, Ralph Ernstorfer, Mariana Rossi, Heinrich Schwoerer
Summary: Researchers directly observed the nuclear dynamics accompanying singlet exciton fission (SEF) in single crystal pentacene using femtosecond electron diffraction. The data revealed coherent atomic motions at 1 THz, incoherent motions, and an anisotropic lattice distortion representing the polaronic character of the triplet excitons.Long-range motions were found to play a decisive part in the electronic decoupling of the electronically correlated triplet pairs, shedding light on the ultrafast occurrence of SEF.
Article
Chemistry, Physical
Carl R. Conti, Alexander S. Bieber, Zachary A. VanOrman, Gregory Moller, Sarah Wieghold, Richard D. Schaller, Geoffrey F. Strouse, Lea Nienhaus
Summary: Bulk lead halide perovskites can efficiently convert infrared-to-visible photons through triplet sensitization, making them potential candidates for integration with photovoltaic devices. Understanding the fundamental photophysical pathways at the perovskite/rubrene interface is crucial for improving the upconversion efficiency and maximizing charge extraction.
ACS ENERGY LETTERS
(2022)
Article
Chemistry, Physical
Chenjian Lin, Yue Qi, Paige J. Brown, Malik L. Williams, Jonathan R. Palmer, Michele Myong, Xingang Zhao, Ryan M. Young, Michael R. Wasielewski
Summary: This article studies the singlet fission (SF) phenomenon of perylene-3,4-dicarboximide (PMI) molecules in the solid state, and finds that 2,5-diphenyl-N-(2-ethylhexyl)perylene-3,4-dicarboximide (dp-PMI) is well-suited for the fission reaction, with high triplet yield and photostability, making it an attractive material for enhancing solar cell efficiency.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Massimo Moret, Angelo Gavezzotti
Summary: A survey of crystal structures of rubrene materials was conducted, analyzing the crystal morphology and packing modes of different chemical substitutions. Cohesive energies and polymorphs were studied. Predictions of crystal morphology and lattice energies using computational methods were compared to experimental results, providing new insights for synthesis and physical property planning.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
David G. Bossanyi, Yoichi Sasaki, Shuanqing Wang, Dimitri Chekulaev, Nobuo Kimizuka, Nobuhiro Yanai, Jenny Clark
Summary: The conversion of near-infrared photons to visible light through triplet-triplet annihilation upconversion is an attractive strategy for boosting the efficiency of solar cell technology. However, the reverse process of singlet fission in solid state has been found to hinder efficient upconversion. Despite the increase in photoluminescence quantum yield of nanoparticle films from 3% to 61% with DBD doping, the energy transfer from Rubrene to DBP does not outcompete the formation of triplet-pairs through singlet fission.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Lei Ye, Yujie Zhao, Rong Xu, Shuangshuang Li, Chunfeng Zhang, Hanying Li, Haiming Zhu
Summary: This study investigates the sensitization of inorganic semiconductors using singlet fission (SF) materials in high-quality organic/2D bilayer heterostructures. The research reveals the intricate interplay between singlet and triplet excitons at the organic/inorganic interface, and demonstrates that competitive processes can lead to efficient photocharge generation in heterostructures.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Editorial Material
Optics
Armando Genco, Giulio Cerullo
Summary: Hybrid systems of silver nanodisks strongly coupled to monolayer tungsten-disulfide (WS2) exhibit giant room-temperature nonlinearity, resulting from their deeply sub-wavelength localized nature, leading to ultrafast modifications of nonlinear absorption in a solid-state system.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Chemistry, Physical
Kewei Sun, Maxim F. Gelin, Yang Zhao
Summary: In this study, we investigated cavity-controlled singlet fission using the numerically exact multiple Davydov D2 ansatz. We examined the population evolution of the TT state and cavity photons to search for high fission efficiency through cavity engineering. Several interesting mechanisms were uncovered, including photon-assisted singlet fission, system localization via a displaced photon state, and collective enhancement of fission efficiency in the two-molecule system. We also found that the system localization process differed between the one-molecule and two-molecule systems due to the presence of a novel central polaritonic conical intersection in the latter.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Materials Science, Multidisciplinary
L. Desplat, S. Meyer, J. Bouaziz, P. M. Buhl, S. Lounis, B. Dupe, P. -A. Hervieux
Summary: This research demonstrates the generation of Dzyaloshinskii-Moriya interaction in ultrathin metal film from a femtosecond pulse in electric field, achieving magnetoelectric coupling. Through calculations and simulations, it is shown that this phenomenon does not require structural inversion-symmetry breaking and can be achieved in a very short timescale.
Article
Chemistry, Physical
A. Fonari, N. S. Corbin, D. Vermeulen, K. P. Goetz, O. D. Jurchescu, L. E. McNeil, J. L. Bredas, V. Coropceanu
JOURNAL OF CHEMICAL PHYSICS
(2015)
Article
Chemistry, Physical
Derek Vermeulen, Nathan Corbin, Katelyn P. Goetz, Oana D. Jurchescu, Veaceslav Coropceanu, L. E. McNeil
JOURNAL OF CHEMICAL PHYSICS
(2017)
Article
Chemistry, Multidisciplinary
Boris Averkiev, Rohan Isaac, Evgheni V. Jucov, Victor N. Khrustalev, Christian Kloc, Laurie E. McNeil, Tatiana V. Timofeeva
CRYSTAL GROWTH & DESIGN
(2018)
Article
Nanoscience & Nanotechnology
Rohan Isaac, Katelyn P. Goetz, Drew Roberts, Oana D. Jurchescu, L. E. McNeil
Article
Chemistry, Multidisciplinary
Aina Mardia Akhmad Aznan, A. P. Safwan, Zanariah Abdullah, Trupta Kaulgud, Hadi D. Arman, Matthew Mahindaratne, L. E. McNeil, Edward R. T. Tiekink
CRYSTAL GROWTH & DESIGN
(2014)
Article
Chemistry, Multidisciplinary
Peng Hu, Lin Ma, Ke Jie Tan, Hui Jiang, Fengxia Wei, Chuhuan Yu, Katelyn P. Goetz, Oana D. Jurchescu, L. E. McNeil, Gagik G. Gurzadyan, Christian Kloc
CRYSTAL GROWTH & DESIGN
(2014)
Article
Chemistry, Physical
D. Vermeulen, L. Y. Zhu, K. P. Goetz, Peng Hu, Hui Jiang, C. S. Day, O. D. Jurchescu, V. Coropceanu, C. Kloc, L. E. McNeil
JOURNAL OF PHYSICAL CHEMISTRY C
(2014)
Biographical-Item
Physics, Multidisciplinary
Benjamin Bederson, Carl Tomizuka, Laurie McNeil
Article
Chemistry, Multidisciplinary
Hui Jiang, Keke K. Zhang, Jun Ye, Fengxia Wei, Peng Hu, Jun Guo, Chunyong Liang, Xiaodong Chen, Yang Zhao, L. E. McNeil, Wenping Hu, Christian Kloc
Article
Energy & Fuels
D. Brosnan, R. Ghosh, L. E. McNeil, Rene Lopez
Article
Multidisciplinary Sciences
K. P. Goetz, A. Fonari, D. Vermeulen, P. Hu, H. Jiang, P. J. Diemer, J. W. Ward, M. E. Payne, C. S. Day, C. Kloc, V. Coropceanu, L. E. McNeil, O. D. Jurchescu
NATURE COMMUNICATIONS
(2014)
Article
Materials Science, Multidisciplinary
Katelyn P. Goetz, Derek Vermeulen, Margaret E. Payne, Christian Kloc, Laurie E. McNeil, Oana D. Jurchescu
JOURNAL OF MATERIALS CHEMISTRY C
(2014)
Article
Physics, Applied
Zafrullah Jagoo, Zachary A. Lamport, Oana D. Jurchescu, L. E. McNeil
Summary: Understanding the physics of charge transport in organic semiconductors under illumination is crucial for developing new optoelectronic applications. In this study, the effects of monochromatic light on an organic thin-film transistor were investigated, revealing a photon-to-charge-carrier conversion efficiency exceeding 100%. This phenomenon was explained by a model involving space-charge limited photocharges and enhanced hole injection from the source electrode due to the lowering of the potential barrier by photogenerated electrons.
APPLIED PHYSICS LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Zafrullah Jagoo, Zachary A. Lamport, Oana D. Jurchescu, Laurie E. McNeil
Summary: In this study, we investigate the viability of diF-TES ADT as a photosensor and discover a direct correlation between the absorption spectrum of the material and the resulting drain current. We also propose a hybrid device structure that achieves high phototransistor metrics across all wavelengths of visible light.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Brandon T. Yost, Bradley Gibbons, Addison Wilson, Amanda J. Morris, L. E. McNeil
Summary: Defect engineering in metal-organic framework compounds has been proven effective in enhancing catalytic functionalities, gas sensing, and gas storage. Raman and infrared vibrational spectroscopies were employed to study the defect effects in Zr-UiO-66 and Hf-UiO-66 compounds. The nature of missing cluster defects in Hf-UiO-66 was characterized using powder X-ray diffraction, while missing linker defects in Zr-UiO-66 were characterized using infrared absorption spectroscopy. These characterization techniques provide valuable insights into the defects in UiO-66 compounds.