Search Results - "Grüne, Jeannine"
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1
Kinetic Modeling of Transient Electroluminescence Reveals TTA as an Efficiency-Limiting Process in Exciplex-Based TADF OLEDs
Published in Journal of physical chemistry. C (25-11-2020)“…Organic light-emitting diodes (OLEDs) based on thermally activated delayed fluorescence (TADF) show increased efficiencies due to efficient upconversion of…”
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Journal Article -
2
The Interplay of Strongly and Weakly Exchange-Coupled Triplet Pairs in Intramolecular Singlet Fission
Published in Journal of the American Chemical Society (30-10-2024)“…Singlet fission (SF) and triplet–triplet annihilation upconversion (TTA-UC) nominally enable the interconversion of higher-energy singlet states with two…”
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Journal Article -
3
Geminate and Nongeminate Pathways for Triplet Exciton Formation in Organic Solar Cells
Published in Advanced energy materials (01-04-2022)“…Organic solar cells (OSCs) have recently shown a rapid improvement in their performance, bringing power conversion efficiencies to above 18%. However, the…”
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Journal Article -
4
Reversible spin-optical interface in luminescent organic radicals
Published in Nature (London) (17-08-2023)“…Molecules present a versatile platform for quantum information science 1 , 2 and are candidates for sensing and computation applications 3 , 4 . Robust…”
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Journal Article -
5
Tetra‐Donor Pyrazine Based Thermally Activated Delayed Fluorescence Emitters for Electroluminescence and Amplified Spontaneous Emission
Published in Advanced functional materials (14-07-2024)“…Abstract Thermally activated delayed fluorescence (TADF) materials are expected to address triplet‐related losses in electrically driven organic lasers, as the…”
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Journal Article -
6
Triplet Excitons and Associated Efficiency‐Limiting Pathways in Organic Solar Cell Blends Based on (Non‐) Halogenated PBDB‐T and Y‐Series
Published in Advanced functional materials (01-03-2023)“…The great progress in organic photovoltaics (OPV) over the past few years has been largely achieved by the development of non‐fullerene acceptors (NFAs), with…”
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Journal Article -
7
Spin States and Efficiency-Limiting Pathways in Optoelectronic Materials and Devices
Published 01-01-2022“…The present thesis addressed the identification and characterization of spin states in optoelectronic materials and devices using multiple spin-sensitive…”
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Dissertation -
8
On the role of charge transfer excitations in non-fullerene acceptors for organic photovoltaics
Published in Materials today (Kidlington, England) (01-09-2024)Get full text
Journal Article -
9
Femtosecond dynamics of diphenylpropynylidene in ethanol and dichloromethane
Published in Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy (05-06-2021)“…[Display omitted] •We report an experimental and computational investigation of the biradical C6H5-C3-C6H5.•Its structure and dynamics are investigated by EPR-…”
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Journal Article -
10
Understanding the Role of Triplet‐Triplet Annihilation in Non‐Fullerene Acceptor Organic Solar Cells
Published in Advanced energy materials (01-09-2023)“…Non‐fullerene acceptors (NFAs) have enabled power conversion efficiencies exceeding 19% in organic solar cells (OSCs). However, the open‐circuit voltage of…”
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Journal Article -
11
Intricacies and Mechanism of p‐Doping Spiro‐MeOTAD Using Cu(TFSI)2
Published in Advanced electronic materials (01-10-2022)“…Copper salts are a popular choice as p‐dopants for organic semiconductors, particularly in…”
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Journal Article -
12
Near-infrared luminescent open-shell π-conjugated systems with a bright lowest-energy zwitterionic singlet excited state
Published in Science advances (26-07-2024)“…Open-shell systems with extensive π-conjugation have fascinating properties due to their narrow bandgaps and spin interactions. In this work, we report neutral…”
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Journal Article -
13
Detecting triplet states in opto-electronic and photovoltaic materials and devices by transient optically detected magnetic resonance
Published 23-11-2021“…Mater. Horiz., 2021, 8, 2569 Triplet excited states in organic semiconductor materials and devices are notoriously difficult to detect and study with…”
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Journal Article -
14
Kinetic Modeling of Transient Electroluminescence reveals TTA as Efficiency-Limiting Process in Exciplex-Based TADF OLEDs
Published 04-11-2020“…J. Phys. Chem. C. 2020 Organic light emitting diodes (OLEDs) based on thermally activated delayed fluorescence (TADF) show increased efficiencies due to…”
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Journal Article -
15
Triplet Excitons and associated Efficiency-Limiting Pathways in Organic Solar Cell Blends based on (Non-) Halogenated PBDB-T and Y-Series
Published 03-01-2023“…Adv. Func. Mater. 2023 The great progress in organic photovoltaics (OPV) over the past few years has been largely achieved by the development of non-fullerene…”
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Journal Article -
16
High-Spin State Dynamics and Quintet-Mediated Emission in Intramolecular Singlet Fission
Published 10-10-2024“…High-spin states in molecular systems hold significant interest for a wide range of applications ranging from optoelectronics to quantum information and…”
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Journal Article -
17
Reversible spin-optical interface in luminescent organic radicals
Published 24-03-2023“…Nature 620, 538-544 (2023) Molecules present a versatile platform for quantum information science, and are candidates for sensing and computation applications…”
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Journal Article -
18
Understanding the Role of Triplet-triplet Annihilation in Non-fullerene Acceptor Organic Solar Cells
Published 05-01-2023“…Non-fullerene acceptors (NFAs) have enabled power conversion efficiencies exceeding 19% in organic solar cells (OSCs). However, the open-circuit voltage of…”
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Journal Article -
19
On the Role of Charge Transfer Excitations in Non-Fullerene Acceptors for Organic Photovoltaics
Published 07-12-2023“…Through the development of new non-fullerene electron acceptor (NFA) materials, such as Y6 and its molecular derivatives, the power conversion efficiencies of…”
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Journal Article -
20
Combining optical and magnetic resonance spectroscopies to probe charge recombination via triplet excitons in organic solar cells
Published 28-10-2021“…Organic solar cells (OSCs) have recently shown a rapid improvement in their performance, bringing power conversion efficiencies (PCEs) closer to the point…”
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Journal Article