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Designing of benzodithiophene acridine based Donor materials with favorable photovoltaic parameters for efficient organic solar cell. COMPUT THEOR CHEM 2021. [DOI: 10.1016/j.comptc.2021.113238] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Olivier Y, Sancho-Garcia JC, Muccioli L, D'Avino G, Beljonne D. Computational Design of Thermally Activated Delayed Fluorescence Materials: The Challenges Ahead. J Phys Chem Lett 2018; 9:6149-6163. [PMID: 30265539 DOI: 10.1021/acs.jpclett.8b02327] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Thermally activated delayed fluorescence (TADF) offers promise for all-organic light-emitting diodes with quantum efficiencies competing with those of transition-metal-based phosphorescent devices. While computational efforts have so far largely focused on gas-phase calculations of singlet and triplet excitation energies, the design of TADF materials requires multiple methodological developments targeting among others a quantitative description of electronic excitation energetics, fully accounting for environmental electrostatics and molecular conformational effects, the accurate assessment of the quantum mechanical interactions that trigger the elementary electronic processes involved in TADF, and a robust picture for the dynamics of these fundamental processes. In this Perspective, we describe some recent progress along those lines and highlight the main challenges ahead for modeling, which we hope will be useful to the whole TADF community.
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Affiliation(s)
- Y Olivier
- Laboratory for Chemistry of Novel Materials , University of Mons , Place du Parc 20 , B-7000 Mons , Belgium
| | - J-C Sancho-Garcia
- Departamento de Química Física , Universidad de Alicante , E-03080 Alicante , Spain
| | - L Muccioli
- Dipartimento di Chimica Industriale "Toso Montanari" , Università di Bologna , I-40136 Bologna , Italy
- Institut des Sciences Moléculaires, UMR 5255 , University of Bordeaux , F- 33405 Talence , France
| | - G D'Avino
- Institut Néel, CNRS and Grenoble Alpes University, F-38042 Grenoble , France
| | - D Beljonne
- Laboratory for Chemistry of Novel Materials , University of Mons , Place du Parc 20 , B-7000 Mons , Belgium
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Roscioni OM, Muccioli L, Zannoni C. Predicting the Conditions for Homeotropic Anchoring of Liquid Crystals at a Soft Surface. 4-n-Pentyl-4'-cyanobiphenyl on Alkylsilane Self-Assembled Monolayers. ACS APPLIED MATERIALS & INTERFACES 2017; 9:11993-12002. [PMID: 28287693 DOI: 10.1021/acsami.6b16438] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We have studied, using atomistic molecular dynamics simulations, the alignment of the nematic liquid-crystal 4-n-pentyl-4'-cyanobiphenyl (5CB) on self-assembled monolayers (SAMs) formed from octadecyl- and/or hexyltrichlorosilane (OTS and HTS) attached to glassy silica. We find a planar alignment on OTS at full coverage and an intermediate situation at partial OTS coverage because of the penetration of 5CB molecules into the monolayer, which also removes the tilt of the OTS SAM. Binary mixtures of HTS and OTS SAMs instead induce homeotropic (i.e., perpendicular) alignment. A comparison with the existing experimental literature is provided.
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Affiliation(s)
- Otello Maria Roscioni
- Dipartimento di Chimica Industriale "Toso Montanari" Università di Bologna , viale Risorgimento 4, IT-40136 Bologna, Italy
| | - Luca Muccioli
- Dipartimento di Chimica Industriale "Toso Montanari" Università di Bologna , viale Risorgimento 4, IT-40136 Bologna, Italy
| | - Claudio Zannoni
- Dipartimento di Chimica Industriale "Toso Montanari" Università di Bologna , viale Risorgimento 4, IT-40136 Bologna, Italy
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D'Avino G, Muccioli L, Castet F, Poelking C, Andrienko D, Soos ZG, Cornil J, Beljonne D. Electrostatic phenomena in organic semiconductors: fundamentals and implications for photovoltaics. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:433002. [PMID: 27603960 DOI: 10.1088/0953-8984/28/43/433002] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
This review summarizes the current understanding of electrostatic phenomena in ordered and disordered organic semiconductors, outlines numerical schemes developed for quantitative evaluation of electrostatic and induction contributions to ionization potentials and electron affinities of organic molecules in a solid state, and illustrates two applications of these techniques: interpretation of photoelectron spectroscopy of thin films and energetics of heterointerfaces in organic solar cells.
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Affiliation(s)
- Gabriele D'Avino
- Laboratory for the Chemistry of Novel Materials, Université de Mons, 7000 Mons, Belgium
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Poelking C, Tietze M, Elschner C, Olthof S, Hertel D, Baumeier B, Würthner F, Meerholz K, Leo K, Andrienko D. Impact of mesoscale order on open-circuit voltage in organic solar cells. NATURE MATERIALS 2015; 14:434-439. [PMID: 25532071 DOI: 10.1038/nmat4167] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 11/05/2014] [Indexed: 06/04/2023]
Abstract
Structural order in organic solar cells is paramount: it reduces energetic disorder, boosts charge and exciton mobilities, and assists exciton splitting. Owing to spatial localization of electronic states, microscopic descriptions of photovoltaic processes tend to overlook the influence of structural features at the mesoscale. Long-range electrostatic interactions nevertheless probe this ordering, making local properties depend on the mesoscopic order. Using a technique developed to address spatially aperiodic excitations in thin films and in bulk, we show how inclusion of mesoscale order resolves the controversy between experimental and theoretical results for the energy-level profile and alignment in a variety of photovoltaic systems, with direct experimental validation. Optimal use of long-range ordering also rationalizes the acceptor-donor-acceptor paradigm for molecular design of donor dyes. We predict open-circuit voltages of planar heterojunction solar cells in excellent agreement with experimental data, based only on crystal structures and interfacial orientation.
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Affiliation(s)
- Carl Poelking
- 1] Max Planck Institute for Polymer Research, Ackermannweg 10 55128 Mainz, Germany [2] Heidelberg Graduate School of Fundamental Physics, INF 226 69120 Heidelberg, Germany
| | - Max Tietze
- Institut für Angewandte Photophysik, George-Bähr-Straße 10 01062 Dresden, Germany
| | - Chris Elschner
- Institut für Angewandte Photophysik, George-Bähr-Straße 10 01062 Dresden, Germany
| | - Selina Olthof
- Physikalische Chemie, Universität zu Köln, Luxemburger Straße 116 50939 Köln, Germany
| | - Dirk Hertel
- Physikalische Chemie, Universität zu Köln, Luxemburger Straße 116 50939 Köln, Germany
| | - Björn Baumeier
- Max Planck Institute for Polymer Research, Ackermannweg 10 55128 Mainz, Germany
| | - Frank Würthner
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Klaus Meerholz
- Physikalische Chemie, Universität zu Köln, Luxemburger Straße 116 50939 Köln, Germany
| | - Karl Leo
- Institut für Angewandte Photophysik, George-Bähr-Straße 10 01062 Dresden, Germany
| | - Denis Andrienko
- Max Planck Institute for Polymer Research, Ackermannweg 10 55128 Mainz, Germany
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Volpi R, Stafström S, Linares M. Transition fields in organic materials: From percolation to inverted Marcus regime. A consistent Monte Carlo simulation in disordered PPV. J Chem Phys 2015; 142:094503. [DOI: 10.1063/1.4913733] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Riccardo Volpi
- Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
| | - Sven Stafström
- Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
| | - Mathieu Linares
- Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
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Pietropaolo A, Wang Y, Nakano T. Predicting the Switchable Screw Sense in Fluorene-Based Polymers. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411313] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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8
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Pietropaolo A, Wang Y, Nakano T. Predicting the switchable screw sense in fluorene-based polymers. Angew Chem Int Ed Engl 2015; 54:2688-92. [PMID: 25641571 DOI: 10.1002/anie.201411313] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 12/09/2014] [Indexed: 11/05/2022]
Abstract
A chirality-switching free-energy landscape was reconstructed on a 43-mer of poly(9,9-dioctylfluoren-2,7-diyl) (PDOF). The simulations were conducted on amorphous silica surface as well as in the vacuum phase for a single chain or for a group of sixteen chains. The achiral-to-chiral transition occurs only on amorphous silica (activation free-energy 35 kcal mol(-1) ), where the enantiomeric (homochiral) basins are detected. This was supported by the experiments where effective chirality induction to PDOF using circularly polarized light (CPL) was attained only for a film deposited on a quartz glass and not for a solution or a suspension. These results indicate that interactions of PDOF with amorphous silica play a crucial role in chirality switching. Importance of chain assembling was also indicated. Theoretical ECD spectra of the enantiomeric basins containing a 51 helix reproduce the experimental spectra.
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Affiliation(s)
- Adriana Pietropaolo
- Dipartimento di Scienze della Salute, Università di Catanzaro, Viale Europa, 88100 Catanzaro (Italy).
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Idé J, Méreau R, Ducasse L, Castet F, Bock H, Olivier Y, Cornil J, Beljonne D, D’Avino G, Roscioni OM, Muccioli L, Zannoni C. Charge Dissociation at Interfaces between Discotic Liquid Crystals: The Surprising Role of Column Mismatch. J Am Chem Soc 2014; 136:2911-20. [DOI: 10.1021/ja4114769] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Julien Idé
- Institut
des Sciences Moléculaires, UMR CNRS 5255, Université de Bordeaux, Cours de la Libération 351, FR-33405 Talence, France
- Dipartimento
di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, via Mancinelli 7, IT-20131 Milano, Italy
| | - Raphaël Méreau
- Institut
des Sciences Moléculaires, UMR CNRS 5255, Université de Bordeaux, Cours de la Libération 351, FR-33405 Talence, France
| | - Laurent Ducasse
- Institut
des Sciences Moléculaires, UMR CNRS 5255, Université de Bordeaux, Cours de la Libération 351, FR-33405 Talence, France
| | - Frédéric Castet
- Institut
des Sciences Moléculaires, UMR CNRS 5255, Université de Bordeaux, Cours de la Libération 351, FR-33405 Talence, France
| | - Harald Bock
- Centre
de Recherche Paul Pascal, UPR CNRS 8641, Université de Bordeaux, Avenue Schweitzer 115, FR-33600 Pessac, France
| | - Yoann Olivier
- Laboratory
for Chemistry of Novel Materials, University of Mons, Place du Parc
20, BE-7000 Mons, Belgium
| | - Jérôme Cornil
- Laboratory
for Chemistry of Novel Materials, University of Mons, Place du Parc
20, BE-7000 Mons, Belgium
| | - David Beljonne
- Laboratory
for Chemistry of Novel Materials, University of Mons, Place du Parc
20, BE-7000 Mons, Belgium
| | - Gabriele D’Avino
- Department
of Industrial Chemistry “Toso Montanari” and INSTM, University of Bologna, Viale del Risorgimento 4, IT-40136 Bologna, Italy
| | - Otello Maria Roscioni
- Department
of Industrial Chemistry “Toso Montanari” and INSTM, University of Bologna, Viale del Risorgimento 4, IT-40136 Bologna, Italy
| | - Luca Muccioli
- Department
of Industrial Chemistry “Toso Montanari” and INSTM, University of Bologna, Viale del Risorgimento 4, IT-40136 Bologna, Italy
| | - Claudio Zannoni
- Department
of Industrial Chemistry “Toso Montanari” and INSTM, University of Bologna, Viale del Risorgimento 4, IT-40136 Bologna, Italy
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