Search Results - "Oum, Kawon"

Exciton Dynamics and Electron–Phonon Coupling Affect the Photovoltaic Performance of the Cs2AgBiBr6 Double Perovskite by Kentsch, Robin, Scholz, Mirko, Horn, Jonas, Schlettwein, Derck, Oum, Kawon, Lenzer, Thomas

“…Lead-free double perovskites have been proposed as promising nontoxic photovoltaic materials for the replacement of lead perovskites. While the latter ones…”
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Mapping the broadband circular dichroism of copolymer films with supramolecular chirality in time and space by Morgenroth, Marius, Scholz, Mirko, Cho, Min Ju, Choi, Dong Hoon, Oum, Kawon, Lenzer, Thomas

“…Measurements of the electronic circular dichroism (CD) are highly sensitive to the absolute configuration and conformation of chiral molecules and…”
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Excited-State Dynamics of Bis(tetraethylammonium) Di-µ-bromo-dibromodicuprate(I) Thin Films by Gust, Domenic, Scholz, Mirko, Oum, Kawon, Lenzer, Thomas

“…Organic-inorganic halocuprates based on monovalent copper are promising luminescent compounds for optoelectronic applications; however, their relaxation…”
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Direct Observation of the Exciton Self-Trapping Process in CsCu2I3 Thin Films by Kentsch, Robin, Morgenroth, Marius, Scholz, Mirko, Xu, Ke, Schmedt Auf der Günne, Jörn, Lenzer, Thomas, Oum, Kawon

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Annealing temperature-dependent induced supramolecular chiroptical response of copolymer thin films studied by pump-modulated transient circular dichroism spectroscopy by Gust, Domenic, Scholz, Mirko, Schumacher, Vivien, Mulatier, Jean-Christophe, Pitrat, Delphine, Guy, Laure, Oum, Kawon, Lenzer, Thomas

“…Copolymer thin films showing induced supramolecular chirality are of considerable interest for optoelectronic applications such as organic light-emitting…”
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Photoinduced Dynamics of 13,13'-Diphenylpropyl-β-carotene by Koo, Sangho, Kim, Yeong Hun, Flender, Oliver, Scholz, Mirko, Oum, Kawon, Lenzer, Thomas

“…Carotenoids are ubiquitous pigment systems in nature which are relevant to a range of processes, such as photosynthesis, but the detailed influence of…”
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Influence of phenylethylammonium iodide as additive in the formamidinium tin iodide perovskite on interfacial characteristics and charge carrier dynamics by Horn, Jonas, Scholz, Mirko, Oum, Kawon, Lenzer, Thomas, Schlettwein, Derck

“…A combined electrical and time-resolved optical investigation of the perovskite formamidinium tin iodide (FASnI3) and its phenylethylammonium (PEA) derivative…”
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Observation of Ultrafast Carrier Dynamics and Phonon Relaxation of Graphene from the Deep-Ultraviolet to the Visible Region by Oum, Kawon, Lenzer, Thomas, Scholz, Mirko, Jung, Dae Yool, Sul, Onejae, Cho, Byung Jin, Lange, Jens, Müller, Andreas

“…We investigated the ultrafast carrier dynamics and phonon relaxation of CVD-grown monolayer and 9-layer graphene on a quartz substrate. Excitation was…”
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Four- and Sixfold Tandem-Domino Reactions Leading to Dimeric Tetrasubstituted Alkenes Suitable as Molecular Switches by Tietze, Lutz F., Waldecker, Bernd, Ganapathy, Dhandapani, Eichhorst, Christoph, Lenzer, Thomas, Oum, Kawon, Reichmann, Sven O., Stalke, Dietmar

“…A highly efficient palladium‐catalyzed fourfold tandem‐domino reaction consisting of two carbopalladation and two CH‐activation steps was developed for the…”
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Excited-State Dynamics of Carbazole and tert-Butyl-Carbazole in Organic Solvents by Knötig, Konstantin Moritz, Gust, Domenic, Lenzer, Thomas, Oum, Kawon

“…Carbazole-based molecular units are ubiquitous in organic optoelectronic materials; however, the excited-state relaxation of these compounds is still…”
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Synthesis and Photochemical Investigations of Tetrasubstituted Alkenes as Molecular Switches-The Effect of Substituents by Tietze, Lutz F., Düfert, M. Alexander, Hungerland, Tim, Oum, Kawon, Lenzer, Thomas

“…Molecular switches based on helical tetrasubstituted alkenes, substituted with either electron‐withdrawing (CF3, F, CN; 2 a–c, 3 a,c) or ‐donating substituents…”
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Excited-State Dynamics of Carbazole and tert-Butyl-Carbazole in Thin Films by Knötig, Konstantin Moritz, Gust, Domenic, Oum, Kawon, Lenzer, Thomas

“…Thin films of carbazole (Cz) derivatives are frequently used in organic electronics, such as organic light-emitting diodes (OLEDs). Because of the proximity of…”
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On the Nature of Interactions between Ionic Liquids and Small Amino-Acid-Based Biomolecules by Tietze, Alesia A., Bordusa, Frank, Giernoth, Ralf, Imhof, Diana, Lenzer, Thomas, Maaß, Astrid, Mrestani-Klaus, Carmen, Neundorf, Ines, Oum, Kawon, Reith, Dirk, Stark, Annegret

“…During the last decade, ionic liquids (ILs) have revealed promising properties and applications in many research fields, including biotechnology and biological…”
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Coherent acoustic phonon dynamics in chiral copolymers by Scholz, Mirko, Morgenroth, Marius, Lenzer, Thomas

“…Coherent phonon oscillations in the UV-Vis transient absorption and circular dichroism response of two chiral polyfluorene-based copolymer thin films are…”
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Ultrafast dynamics of the indoline dye D149 on electrodeposited ZnO and sintered ZrO2 and TiO2 thin films by Oum, Kawon, Lohse, Peter W, Flender, Oliver, Klein, Johannes R, Scholz, Mirko, Lenzer, Thomas, Du, Juan, Oekermann, Torsten

“…The ultrafast photoinjection and subsequent relaxation steps of the indoline dye D149 were investigated in detail for a mesoporous electrodeposited ZnO thin…”
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Understanding Excited-State Relaxation in 1,3-Bis(N‑carbazolyl)benzene, a Host Material for Organic Light-Emitting Diodes by Morgenroth, Marius, Lenzer, Thomas, Oum, Kawon

“…We present a detailed spectroscopic study of 1,3-bis­(N-carbazolyl)­benzene (mCP), a prototypical host material for blue emitters in organic light-emitting…”
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Spatiotemporal Mapping of Efficient Chiral Induction by Helicene‐Type Additives in Copolymer Thin Films by Morgenroth, Marius, Scholz, Mirko, Guy, Laure, Oum, Kawon, Lenzer, Thomas

“…We observed efficient induction of chirality in polyfluorene copolymer thin films by mixing with helicene‐type chiral additives based on the…”
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Ultrafast Carrier Dynamics of the Copper(II)-Based Perovskite-Inspired Materials A2CuCl4–x Br x (A = C6H5CH2CH2NH3 or CH3NH3, x = 0, 2, 4) by Kentsch, Robin, Scholz, Mirko, Oum, Kawon, Lenzer, Thomas

“…Microcrystalline powders and thin films of the copper­(II)-based layered hybrid organic–inorganic methylammonium (MA) and 2-phenylethylammonium (PEA)…”
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Critical Evaluation of the Photovoltaic Performance of (AgI) x (BiI3) y Thin Films from the Viewpoint of Ultrafast Spectroscopy and Photocurrent Experiments by Merker, Alexander, Morgenroth, Marius, Scholz, Mirko, Lenzer, Thomas, Oum, Kawon

“…Silver iodobismuthate thin films obtained from mixtures of AgI and BiI3 have been frequently suggested as promising alternatives for lead-based perovskite…”
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Ultrafast Carrier Dynamics and Electrical Properties of the Palladium-Based Vacancy-Ordered Perovskite Cs2PdBr6 by Scholz, Mirko, Morgenroth, Marius, Merker, Alexander, Oum, Kawon, Lenzer, Thomas

“…Phase-pure powders of the vacancy-ordered, metal-deficient perovskite cesium hexabromo­palladate­(IV), Cs2PdBr6, were synthesized and deposited as a dense…”
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