1
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Citty B, Lynd JK, Gera T, Varvelo L, Raccah DIGB. MesoHOPS: Size-invariant scaling calculations of multi-excitation open quantum systems. J Chem Phys 2024; 160:144118. [PMID: 38619062 DOI: 10.1063/5.0197825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Accepted: 03/11/2024] [Indexed: 04/16/2024] Open
Abstract
The photoexcitation dynamics of molecular materials on the 10-100 nm length scale depend on complex interactions between electronic and vibrational degrees of freedom, rendering exact calculations difficult or intractable. The adaptive Hierarchy of Pure States (adHOPS) is a formally exact method that leverages the locality imposed by interactions between thermal environments and electronic excitations to achieve size-invariant scaling calculations for single-excitation processes in systems described by a Frenkel-Holstein Hamiltonian. Here, we extend adHOPS to account for arbitrary couplings between thermal environments and vertical excitation energies, enabling formally exact, size-invariant calculations that involve multiple excitations or states with shared thermal environments. In addition, we introduce a low-temperature correction and an effective integration of the noise to reduce the computational expense of including ultrafast vibrational relaxation in Hierarchy of Pure States (HOPS) simulations. We present these advances in the latest version of the open-source MesoHOPS library and use MesoHOPS to characterize charge separation at a one-dimensional organic heterojunction when both the electron and hole are mobile.
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Affiliation(s)
- Brian Citty
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, USA
| | - Jacob K Lynd
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, USA
| | - Tarun Gera
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, USA
| | - Leonel Varvelo
- Department of Chemistry, Southern Methodist University, PO Box 750314 Dallas, Texas 75205, USA
| | - Doran I G B Raccah
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, USA
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2
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De A, Mora Perez C, Liang A, Wang K, Dou L, Prezhdo O, Huang L. Tunneling-Driven Marcus-Inverted Triplet Energy Transfer in a Two-Dimensional Perovskite. J Am Chem Soc 2024; 146:4260-4269. [PMID: 38305175 DOI: 10.1021/jacs.4c00236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Quantum tunneling, a phenomenon that allows particles to pass through potential barriers, can play a critical role in energy transfer processes. Here, we demonstrate that the proper design of organic-inorganic interfaces in two-dimensional (2D) hybrid perovskites allows for efficient triplet energy transfer (TET), where quantum tunneling of the excitons is the key driving force. By employing temperature-dependent and time-resolved photoluminescence and pump-probe spectroscopy techniques, we establish that triplet excitons can transfer from the inorganic lead-iodide sublattices to the pyrene ligands with rapid and weakly temperature-dependent characteristic times of approximately 50 ps. The energy transfer rates obtained based on the Marcus theory and first-principles calculations show good agreement with the experiments, indicating that the efficient tunneling of triplet excitons within the Marcus-inverted regime is facilitated by high-frequency molecular vibrations. These findings offer valuable insights into how one can effectively manipulate the energy landscape in 2D hybrid perovskites for energy transfer and the creation of diverse excitonic states.
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Affiliation(s)
- Angana De
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Carlos Mora Perez
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Aihui Liang
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Kang Wang
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Letian Dou
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
| | - Oleg Prezhdo
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Libai Huang
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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3
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Wang Z, Miglani B, Yuan S, Bevan KH. On the application of Marcus-Hush theory to small polaron chemical dynamics in oxides: its relationship to the Holstein model and the importance of lattice-orbital symmetries. Phys Chem Chem Phys 2024; 26:4812-4827. [PMID: 38284789 DOI: 10.1039/d3cp05218d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2024]
Abstract
The chemical dynamics of small polaron hopping within oxides is often interpreted through two-site variations on Marcus-Hush theory, while from a physics perspective small polaron hopping is more often approached from Holstein's solid-state formalism. Here we seek to provide a chemically oriented viewpoint, focusing on small polaron hopping in oxides, concerning these two phenomenological frameworks by employing both tight-binding modelling and first-principles calculations. First, within a semiclassical approach the Marcus-Hush relations are overviewed as a two-site reduction of Holstein's model. Within the single-band regime, similarities and differences between Holstein derived small polaron hopping and the Marcus-Hush model are also discussed. In this context the emergence of adiabaticity (or, conversely, diabaticity) is also explored within each framework both analytically and by directly evolving the system wavefunction. Then, through first-principles calculations of select oxides we explore how coupled lattice and orbital symmetries can impact on hopping properties - in a manner that is quite distinct typical chemical applications of Marcus-Hush theory. These results are then related back to the Holstein model to explore the relative applicability of the two frameworks towards interpreting small polaron hopping properties, where it is emphasized that the Holstein model offers an increasingly more appealing physicochemical interpretation of hopping processes as band and/or coupling interactions increase. Overall, this work aims to strengthen the physically oriented exploration of small polarons and their physicochemical properties in the growing oxide chemistry community.
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Affiliation(s)
- Zi Wang
- Division of Materials Engineering, Faculty of Engineering, McGill University, Montréal, Québec, Canada.
| | - Bobby Miglani
- Division of Materials Engineering, Faculty of Engineering, McGill University, Montréal, Québec, Canada.
| | - Shuaishuai Yuan
- Division of Materials Engineering, Faculty of Engineering, McGill University, Montréal, Québec, Canada.
| | - Kirk H Bevan
- Division of Materials Engineering, Faculty of Engineering, McGill University, Montréal, Québec, Canada.
- Centre for the Physics of Materials, McGill University, Montréal, Québec, Canada
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4
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Majeed M, Waqas M, Aloui Z, Essid M, Ibrahim MAA, Khera RA, Shaban M, Ans M. Exploring the Electronic, Optical, and Charge Transfer Properties of A-D-A-Type IDTV-ThIC-Based Molecules To Enhance Photovoltaic Performance of Organic Solar Cells. ACS OMEGA 2023; 8:45384-45404. [PMID: 38075832 PMCID: PMC10701727 DOI: 10.1021/acsomega.3c04437] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 09/28/2023] [Accepted: 10/19/2023] [Indexed: 01/23/2024]
Abstract
Improving the charge mobility and optoelectronic properties of indacenodithiophene-based small molecule acceptors is a key challenge to improving overall efficiency. In this current research, seven newly designed molecules (DT1-DT7) comprising the indacenodithiophene-based core are presented to tune energy levels, enhance charge mobility, and improve the photovoltaic performance of IDTV-ThIC molecules via density functional theory. All the molecules were designed by end-capped modification by substituting terminal acceptors of IDTV-ThIC with strong electron-withdrawing moieties. Among all the examined structures, DT1 has proved itself a superior molecule in multiple aspects, including higher λmax in chloroform (787 nm) and gaseous phase (727 nm), narrow band gap (2.16 eV), higher electron affinity (3.31 eV), least excitation energy (1.57 eV), and improved charge mobility due to low reorganization energy and higher excited state lifetime (2.37 ns) when compared to the reference (IDTV-ThIC) and other molecules. DT5 also showed remarkable improvement in different parameters, such as the lowest exciton binding energy (0.41 eV), leading to easier charge moveability. The improved open-circuit voltage of DT4 and DT5 makes them proficient molecules exhibiting the charge transfer phenomenon. The enlightened outcomes of these molecules can pave a new route to develop efficient organic solar cell devices using these molecules, especially DT1, DT4, and DT5.
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Affiliation(s)
- Maham Majeed
- Department
of Chemistry, University of Agriculture, Faisalabad 38000, Pakistan
| | - Muhammad Waqas
- Department
of Chemistry, University of Agriculture, Faisalabad 38000, Pakistan
| | - Zouhaier Aloui
- Chemistry
Department, College of Science, King Khalid
University (KKU), P.O. Box 9004, Abha 61421, Saudi Arabia
| | - Manel Essid
- Chemistry
Department, College of Science, King Khalid
University (KKU), P.O. Box 9004, Abha 61421, Saudi Arabia
| | - Mahmoud A. A. Ibrahim
- Chemistry
Department, Faculty of Science, Minia University, Minia 61519, Egypt
- School
of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban 4000, South Africa
| | - Rasheed Ahmad Khera
- Department
of Chemistry, University of Agriculture, Faisalabad 38000, Pakistan
| | - Mohamed Shaban
- Department
of Physics, Faculty of Science, Islamic
University of Madinah, Madinah 42351, Saudi Arabia
- Nanophotonics
and Applications (NPA) Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Muhammad Ans
- Department
of Chemistry, University of Agriculture, Faisalabad 38000, Pakistan
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5
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Rehman F, Hameed S, Khera RA, Shaban M, Essid M, Aloui Z, Al-Saeedi SI, Ibrahim MAA, Waqas M. High-Efficiency and Low-Energy-Loss Organic Solar Cells Enabled by Tuning the End Group Modification of the Terthiophene-Based Acceptor Molecules to Enhance Photovoltaic Properties. ACS OMEGA 2023; 8:42492-42510. [PMID: 38024709 PMCID: PMC10652832 DOI: 10.1021/acsomega.3c05176] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 10/09/2023] [Indexed: 12/01/2023]
Abstract
In the current study, six nonfullerene small acceptor molecules were designed by end-group modification of terminal acceptors. Density functional theory calculations of all designed molecules were performed, and optoelectronic properties were computed by employing different functionals. Every constructed molecule has a significant bathochromic shift in the maximum absorption value (λmax) except AM6. AM1-AM4 molecules represented a narrow band gap (Eg) and low excitation energy values. The AM1-AM4 and AM6 molecules have higher electron mobility. Comparing AM2 to the reference molecule reveals that AM2 has higher hole mobilities. Compared to the reference molecule, all compounds have excellent light harvesting efficiency values compared to AM1 and AM2. The natural transition orbital investigation showed that AM5 and AM6 had significant electronic transitions. The open-circuit voltage (Voc) values of the computed molecules were calculated by combining the designed acceptor molecules with PTB7-Th. In light of the findings, it is concluded that the designed molecules can be further developed for organic solar cells (OSCs) with superior photovoltaic abilities.
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Affiliation(s)
- Faseh
Ur Rehman
- Department
of Chemistry, University of Agriculture, Faisalabad 38000, Pakistan
| | - Shanza Hameed
- Department
of Chemistry, University of Agriculture, Faisalabad 38000, Pakistan
| | - Rasheed Ahmad Khera
- Department
of Chemistry, University of Agriculture, Faisalabad 38000, Pakistan
| | - Mohamed Shaban
- Department
of Physics, Faculty of Science, Islamic
University of Madinah, Madinah 42351, Saudi Arabia
| | - Manel Essid
- Chemistry
Department, College of Science, King Khalid
University (KKU), P.O. Box, Abha 9004. Saudi Arabia
| | - Zouhaier Aloui
- Chemistry
Department, College of Science, King Khalid
University (KKU), P.O. Box, Abha 9004. Saudi Arabia
| | - Sameerah I. Al-Saeedi
- Department
of Chemistry. Collage of Science, Princess
Nourah Bint Abdulrahman University, P.O.
Box 84428, Riyadh 11671, Saudi Arabia
| | - Mahmoud A. A. Ibrahim
- Chemistry
Department, Faculty of Science, Minia University, Minia 61519, Egypt
- School
of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban 4000, South
Africa
| | - Muhammad Waqas
- Department
of Chemistry, University of Agriculture, Faisalabad 38000, Pakistan
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6
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Giannini S, Di Virgilio L, Bardini M, Hausch J, Geuchies JJ, Zheng W, Volpi M, Elsner J, Broch K, Geerts YH, Schreiber F, Schweicher G, Wang HI, Blumberger J, Bonn M, Beljonne D. Transiently delocalized states enhance hole mobility in organic molecular semiconductors. NATURE MATERIALS 2023; 22:1361-1369. [PMID: 37709929 DOI: 10.1038/s41563-023-01664-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 08/14/2023] [Indexed: 09/16/2023]
Abstract
Evidence shows that charge carriers in organic semiconductors self-localize because of dynamic disorder. Nevertheless, some organic semiconductors feature reduced mobility at increasing temperature, a hallmark for delocalized band transport. Here we present the temperature-dependent mobility in two record-mobility organic semiconductors: dinaphtho[2,3-b:2',3'-f]thieno[3,2-b]-thiophene (DNTT) and its alkylated derivative, C8-DNTT-C8. By combining terahertz photoconductivity measurements with atomistic non-adiabatic molecular dynamics simulations, we show that while both crystals display a power-law decrease of the mobility (μ) with temperature (T) following μ ∝ T -n, the exponent n differs substantially. Modelling reveals that the differences between the two chemically similar semiconductors can be traced to the delocalization of the different states that are thermally accessible by charge carriers, which in turn depends on their specific electronic band structure. The emerging picture is that of holes surfing on a dynamic manifold of vibrationally dressed extended states with a temperature-dependent mobility that provides a sensitive fingerprint for the underlying density of states.
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Affiliation(s)
- Samuele Giannini
- Laboratory for Chemistry of Novel Materials, University of Mons, Mons, Belgium.
| | | | - Marco Bardini
- Laboratory for Chemistry of Novel Materials, University of Mons, Mons, Belgium
| | - Julian Hausch
- Institut für Angewandte Physik, Universität Tübingen, Tübingen, Germany
| | | | - Wenhao Zheng
- Max Planck Institute for Polymer Research, Mainz, Germany
| | - Martina Volpi
- Laboratoire de Chimie des Polymères, Faculté des Sciences, Université Libre de Bruxelles (ULB), Bruxelles, Belgium
| | - Jan Elsner
- Department of Physics and Astronomy and Thomas Young Centre, University College London, London, UK
| | - Katharina Broch
- Institut für Angewandte Physik, Universität Tübingen, Tübingen, Germany
| | - Yves H Geerts
- Laboratoire de Chimie des Polymères, Faculté des Sciences, Université Libre de Bruxelles (ULB), Bruxelles, Belgium
- International Solvay Institutes for Physics and Chemistry, Université Libre de Bruxelles (ULB), Bruxelles, Belgium
| | - Frank Schreiber
- Institut für Angewandte Physik, Universität Tübingen, Tübingen, Germany
| | - Guillaume Schweicher
- Laboratoire de Chimie des Polymères, Faculté des Sciences, Université Libre de Bruxelles (ULB), Bruxelles, Belgium
| | - Hai I Wang
- Max Planck Institute for Polymer Research, Mainz, Germany.
- Nanophotonics, Debye Institute for Nanomaterials Science, Utrecht University, Utrecht, The Netherlands.
| | - Jochen Blumberger
- Department of Physics and Astronomy and Thomas Young Centre, University College London, London, UK
| | - Mischa Bonn
- Max Planck Institute for Polymer Research, Mainz, Germany.
| | - David Beljonne
- Laboratory for Chemistry of Novel Materials, University of Mons, Mons, Belgium.
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7
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Mishima K, Kano N. Contribution Factors of the First Kind Calculated for the Marcus Electron-Transfer Rate and Their Applications. J Phys Chem B 2023; 127:8509-8524. [PMID: 37782079 DOI: 10.1021/acs.jpcb.3c03420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
In this study, we applied the concept of the "contribution factor of the first kind (CFFK)" to the original electron-transfer (ET) rate theory proposed by Marcus. Mathematical derivations provided simple and convenient formulas for estimating the relative contributions of ten physical and chemical parameters involved in the Marcus ET rate formula: (1) the maximum strength of the electronic coupling energy between two molecules, (2) the exponential decay rate of the electronic coupling energy versus the distance between both molecules, (3) the distance between both molecules, (4) the equilibrium distance between both molecules, (5) the Gibbs free energy, (6) reorganization free energy in the prefactor of the Marcus ET rate equation, (7) reorganization free energy in the denominator of the exponential term, (8) reorganization free energy in the argument of the exponential term, (9) Boltzmann constant times absolute temperature in the prefactor of the rate equation, and (10) Boltzmann constant times absolute temperature in the denominator of the exponential term. We applied our theories to (i) ET reactions at bacterial photosynthesis reaction centers, PSI and PSII, and soluble ferredoxins (Fd); (ii) intraprotein ET reactions for designed azurin mutants; and (iii) ET reactions in flavodoxin (Fld). The formulas and calculations suggest that the theory behind the CFFK is useful for quantitatively identifying major and minor physical and chemical factors and corresponding trade-offs, all of which affect the magnitude of the Marcus ET rate.
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Affiliation(s)
- Kenji Mishima
- Independent Researcher, Bunkyo-ku, Tokyo 113-0024, Japan
| | - Naoki Kano
- Department of Chemistry and Chemical Engineering, Faculty of Engineering, Niigata University, 8050 Ikarashi 2-Nocho, Nishi-ku, Niigata 950-2181, Japan
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8
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Hatakeyama-Sato K, Oyaizu K. Redox: Organic Robust Radicals and Their Polymers for Energy Conversion/Storage Devices. Chem Rev 2023; 123:11336-11391. [PMID: 37695670 DOI: 10.1021/acs.chemrev.3c00172] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Persistent radicals can hold their unpaired electrons even under conditions where they accumulate, leading to the unique characteristics of radical ensembles with open-shell structures and their molecular properties, such as magneticity, radical trapping, catalysis, charge storage, and electrical conductivity. The molecules also display fast, reversible redox reactions, which have attracted particular attention for energy conversion and storage devices. This paper reviews the electrochemical aspects of persistent radicals and the corresponding macromolecules, radical polymers. Radical structures and their redox reactions are introduced, focusing on redox potentials, bistability, and kinetic constants for electrode reactions and electron self-exchange reactions. Unique charge transport and storage properties are also observed with the accumulated form of redox sites in radical polymers. The radical molecules have potential electrochemical applications, including in rechargeable batteries, redox flow cells, photovoltaics, diodes, and transistors, and in catalysts, which are reviewed in the last part of this paper.
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Affiliation(s)
- Kan Hatakeyama-Sato
- School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku Tokyo 152-8552, Japan
- Department of Applied Chemistry, Waseda University, Tokyo 169-8555, Japan
| | - Kenichi Oyaizu
- Department of Applied Chemistry, Waseda University, Tokyo 169-8555, Japan
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9
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Yang H, Li W, Ren J, Shuai Z. Time-Dependent Density Matrix Renormalization Group Method for Quantum Transport with Phonon Coupling in Molecular Junction. J Chem Theory Comput 2023; 19:6070-6081. [PMID: 37669099 DOI: 10.1021/acs.jctc.3c00340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/06/2023]
Abstract
Quantum transport in molecular junctions has attracted great attention. The charge motion in a molecular junction can cause geometric deformation, leading to strong electron phonon coupling, which was often overlooked. We have formulated a nearly exact method to assess the time-dependent current and occupation number in the molecular junction modeled by the electron-phonon coupled bridge state using the time-dependent density matrix renormalization group (TD-DMRG) method. The oscillation period and amplitude of the current are found to be dependent on the electron phonon coupling strength and energy level alignment with the electrodes. In an attempt to better understand these phenomena, we have devised a new approximation that explains the bistability phenomenon and the behavior of steady currents in the strong electron-phonon coupling regime. Comparisons have been made with the multilayer-multiconfiguration time-dependent Hartree (ML-MCTDH) method and the analytical result in the purely electronic limit. Furthermore, we explore the entropy of different orderings, extending to the electron phonon model problems. Regarding finite temperature, the thermal Bogoliubov transformation of both fermions and bosons is used and compared with imaginary time evolution results.
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Affiliation(s)
- Hengrui Yang
- MOE Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Weitang Li
- MOE Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Jiajun Ren
- MOE Key Laboratory of Theoretical and Computational Photochemistry, College of Chemistry, Beijing Normal University, Beijing 100875, People's Republic of China
| | - Zhigang Shuai
- MOE Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, People's Republic of China
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10
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Zhang M, Johnson CE, Ilic A, Schwarz J, Johansson MB, Lomoth R. High-Efficiency Photoinduced Charge Separation in Fe(III)carbene Thin Films. J Am Chem Soc 2023; 145:19171-19176. [PMID: 37616472 PMCID: PMC10485928 DOI: 10.1021/jacs.3c05404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Indexed: 08/26/2023]
Abstract
Symmetry-breaking charge separation in molecular materials has attracted increasing attention for optoelectronics based on single-material active layers. To this end, Fe(III) complexes with particularly electron-donating N-heterocyclic carbene ligands offer interesting properties with a 2LMCT excited state capable of oxidizing or reducing the complex in its ground state. In this Communication, we show that the corresponding symmetry-breaking charge separation occurs in amorphous films of pristine [Fe(III)L2]PF6 (L = [phenyl(tris(3-methylimidazol-2-ylidene))borate]-). Excitation of the solid material with visible light leads to ultrafast electron transfer quenching of the 2LMCT excited state, generating Fe(II) and Fe(IV) products with high efficiency. Sub-picosecond charge separation followed by recombination in about 1 ns could be monitored by transient absorption spectroscopy. Photoconductivity measurements of films deposited on microelectrode arrays demonstrated that photogenerated charge carriers can be collected at external contacts.
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Affiliation(s)
- Minli Zhang
- Department
of Chemistry - Ångström Laboratory, Uppsala University, Box 523, SE-75120 Uppsala, Sweden
| | - Catherine E. Johnson
- Department
of Chemistry - Ångström Laboratory, Uppsala University, Box 523, SE-75120 Uppsala, Sweden
| | - Aleksandra Ilic
- Center
for Analysis and Synthesis, Department of Chemistry, Lund University, Box 124, SE-22100 Lund, Sweden
| | - Jesper Schwarz
- Center
for Analysis and Synthesis, Department of Chemistry, Lund University, Box 124, SE-22100 Lund, Sweden
| | - Malin B. Johansson
- Department
of Chemistry - Ångström Laboratory, Uppsala University, Box 523, SE-75120 Uppsala, Sweden
| | - Reiner Lomoth
- Department
of Chemistry - Ångström Laboratory, Uppsala University, Box 523, SE-75120 Uppsala, Sweden
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11
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Aloufi F, Halawani RF, Jamoussi B, Hajri AK, Zahi N. Quantum Modification of Indacenodithieno[3,2- b]thiophene-Based Non-fullerene Acceptor Molecules for Organic Solar Cells of High Efficiency. ACS OMEGA 2023; 8:21425-21437. [PMID: 37360427 PMCID: PMC10286251 DOI: 10.1021/acsomega.2c07975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 05/11/2023] [Indexed: 06/28/2023]
Abstract
In order to enhance the efficacy of organic solar cells, six new three-dimensional small donor molecules (IT-SM1 to IT-SM6) have been computationally designed by modifying the peripheral acceptors of the reference molecule (IT-SMR). The frontier molecular orbitals revealed that IT-SM2 to IT-SM5 had a smaller band gap (Egap) than IT-SMR. They also had smaller excitation energies (Ex) and exhibited a bathochromic shift in their absorption maxima (λmax) when compared to IT-SMR. In both the gas and chloroform phases, IT-SM2 had the largest dipole moment. IT-SM2 also had the best electron mobility, while IT-SM6 had the best hole mobility owing to their smallest reorganization energy for electron (0.1127 eV) and hole (0.0907 eV) mobility, respectively. The analyzed donor molecules' open-circuit voltage (VOC) indicated that all of these proposed molecules had greater VOC and fill factor (FF) values than the IT-SMR molecule. In accordance with the evidence of this work, the altered molecules can seem to be quite proficient for usage by experimentalists and have prospective use in future in the manufacture of organic solar cells with improved photovoltaic properties.
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Affiliation(s)
- Fahed
A. Aloufi
- Department
of Environment, Faculty of Environmental Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Riyadh F. Halawani
- Department
of Environment, Faculty of Environmental Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Bassem Jamoussi
- Department
of Environmental Science, Faculty of Meteorology, Environment and
Arid Land Agriculture, King Abdulaziz University, P.O. Box 80207, Jeddah 21589, Saudi Arabia
| | - Amira K. Hajri
- Department
of Chemistry, Alwajh College, University
of Tabuk, Tabuk 47512, Saudi Arabia
| | - Nesrine Zahi
- Applied
College, Huraymila, Imam Mohammad Ibn Saud
Islamic University (IMSIU), Riyadh 11564, Saudi Arabia
- Thermal
and Energetic Systems Studies Laboratory (LESTE), National Engineering
School of Monastir (ENIM), University of
Monastir, Monastir 5000, Tunisia
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12
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Li W, Allcock J, Cheng L, Zhang SX, Chen YQ, Mailoa JP, Shuai Z, Zhang S. TenCirChem: An Efficient Quantum Computational Chemistry Package for the NISQ Era. J Chem Theory Comput 2023. [PMID: 37317520 DOI: 10.1021/acs.jctc.3c00319] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
TenCirChem is an open-source Python library for simulating variational quantum algorithms for quantum computational chemistry. TenCirChem shows high-performance in the simulation of unitary coupled-cluster circuits, using compact representations of quantum states and excitation operators. Additionally, TenCirChem supports noisy circuit simulation and provides algorithms for variational quantum dynamics. TenCirChem's capabilities are demonstrated through various examples, such as the calculation of the potential energy curve of H2O with a 6-31G(d) basis set using a 34-qubit quantum circuit, the examination of the impact of quantum gate errors on the variational energy of the H2 molecule, and the exploration of the Marcus inverted region for charge transfer rate based on variational quantum dynamics. Furthermore, TenCirChem is capable of running real quantum hardware experiments, making it a versatile tool for both simulation and experimentation in the field of quantum computational chemistry.
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Affiliation(s)
- Weitang Li
- Tencent Quantum Lab, Shenzhen 518057, China
| | | | | | | | | | | | - Zhigang Shuai
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen 518172, China
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13
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Li CH, Tabor DP. Reorganization Energy Predictions with Graph Neural Networks Informed by Low-Cost Conformers. J Phys Chem A 2023; 127:3484-3489. [PMID: 37017992 PMCID: PMC10848248 DOI: 10.1021/acs.jpca.2c09030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 02/21/2023] [Indexed: 04/06/2023]
Abstract
A critical bottleneck for the design of high-conductivity organic materials is finding molecules with low reorganization energy. To enable high-throughput virtual screening campaigns for many types of organic electronic materials, a fast reorganization energy prediction method compared to density functional theory is needed. However, the development of low-cost machine-learning-based models for calculating the reorganization energy has proven to be challenging. In this paper, we combine a 3D graph-based neural network (GNN) recently benchmarked for drug design applications, ChIRo, with low-cost conformational features for reorganization energy predictions. By comparing the performance of ChIRo to another 3D GNN, SchNet, we find evidence that the bond-invariant property of ChIRo enables the model to learn from low-cost conformational features more efficiently. Through an ablation study with a 2D GNN, we find that using low-cost conformational features on top of 2D features informs the model for making more accurate predictions. Our results demonstrate the feasibility of reorganization energy predictions on the benchmark QM9 data set without needing DFT-optimized geometries and demonstrate the types of features needed for robust models that work on diverse chemical spaces. Furthermore, we show that ChIRo informed with low-cost conformational features achieves comparable performance with the previously reported structure-based model on π-conjugated hydrocarbon molecules. We expect this class of methods can be applied to the high-throughput screening of high-conductivity organic electronics candidates.
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Affiliation(s)
- Cheng-Han Li
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Daniel P. Tabor
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
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14
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Willson JT, Liu W, Balzer D, Kassal I. Jumping Kinetic Monte Carlo: Fast and Accurate Simulations of Partially Delocalized Charge Transport in Organic Semiconductors. J Phys Chem Lett 2023; 14:3757-3764. [PMID: 37044057 DOI: 10.1021/acs.jpclett.3c00388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Developing devices using disordered organic semiconductors requires accurate and practical models of charge transport. In these materials, charge transport occurs through partially delocalized states in an intermediate regime between localized hopping and delocalized band conduction. Partial delocalization can increase mobilities by orders of magnitude compared to those with conventional hopping, making it important for the design of materials and devices. Although delocalization, disorder, and polaron formation can be described using delocalized kinetic Monte Carlo (dKMC), it is a computationally expensive method. Here, we develop jumping kinetic Monte Carlo (jKMC), a model that approaches the accuracy of dKMC for modest amounts of delocalization (such as those found in disordered organic semiconductors), with a computational cost comparable to that of conventional hopping. jKMC achieves its computational performance by modeling conduction using identical spherical polarons, yielding a simple delocalization correction to the Marcus hopping rate that allows polarons to jump over their nearest neighbors. jKMC can be used in regimes of partial delocalization inaccessible to dKMC to show that modest delocalization can increase mobilities by as much as 2 orders of magnitude.
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Affiliation(s)
- Jacob T Willson
- School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia
| | - William Liu
- School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia
| | - Daniel Balzer
- School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia
| | - Ivan Kassal
- School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia
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15
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Rashid EU, Hadia NMA, Shawky AM, Ijaz N, Essid M, Iqbal J, Alatawi NS, Ans M, Khera RA. Quantum modeling of dimethoxyl-indaceno dithiophene based acceptors for the development of semiconducting acceptors with outstanding photovoltaic potential. RSC Adv 2023; 13:4641-4655. [PMID: 36760314 PMCID: PMC9900428 DOI: 10.1039/d2ra07957g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 01/18/2023] [Indexed: 02/08/2023] Open
Abstract
In the current DFT study, seven dimethoxyl-indaceno dithiophene based semiconducting acceptor molecules (ID1-ID7) are designed computationally by modifying the parent molecule (IDR). Here, based on a DFT exploration at a carefully selected level of theory, we have compiled a list of the optoelectronic properties of ID1-ID7 and IDR. In light of these results, all newly designed molecules, except ID5 have shown a bathochromic shift in their highest absorbance (λ max). ID1-ID4, ID6 and ID7 molecules have smaller band gap (E gap) and excitation energy (E x). IP of ID5 is the smallest and EA of ID1 is the largest among all others. Compared to the parent molecule, ID1-ID3 have increased electron mobility, with ID1 being the most improved in hole mobility. ID4 had the best light harvesting efficiency in this investigation, due to its strongest oscillator. The acceptor molecules' open-circuit voltages (V OC) were computed after being linked to the PTB7-Th donor molecule. Fill factor (FF) and normalized V OC of ID1-ID7 were calculated and compared to the parent molecule. Based on the outcomes of this study, the modified acceptors may be further scrutinised for empirical usage in the production of organic solar cells with enhanced photovoltaic capabilities.
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Affiliation(s)
- Ehsan Ullah Rashid
- Department of Chemistry, University of Agriculture Faisalabad 38000 Pakistan
| | - N. M. A. Hadia
- Physics Department, College of Science, Jouf UniversityP.O. Box 2014SakakaAl-JoufSaudi Arabia
| | - Ahmed M. Shawky
- Science and Technology Unit (STU), Umm Al-Qura UniversityMakkah 21955Saudi Arabia
| | - Nashra Ijaz
- Department of Chemistry, University of Agriculture Faisalabad 38000 Pakistan
| | - Manel Essid
- Chemistry Department, College of Science, King Khalid University (KKU)P.O. Box 9004AbhaSaudi Arabia,Université de Carthage, Faculté des Sciences de Bizerte, LR13ES08 Laboratoire de Chimie des MatériauxZarzouna Bizerte7021Tunisia
| | - Javed Iqbal
- Department of Chemistry, University of Agriculture Faisalabad 38000 Pakistan
| | - Naifa S. Alatawi
- Physics Department, Faculty of Science, University of TabukTabuk 71421Saudi Arabia
| | - Muhammad Ans
- Department of Chemistry, University of Agriculture Faisalabad 38000 Pakistan
| | - Rasheed Ahmad Khera
- Department of Chemistry, University of Agriculture Faisalabad 38000 Pakistan
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16
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Rani M, Hadia NMA, Shawky AM, Mehmood RF, Hameed S, Zahid S, Iqbal J, Alatawi NS, Ahmed A, Khera RA. Novel A-π-D-π-A type non-fullerene acceptors of dithienyl diketopyrropopyrrole derivatives to enhance organic photovoltaic applications: a DFT study. RSC Adv 2023; 13:1640-1658. [PMID: 36712641 PMCID: PMC9833106 DOI: 10.1039/d2ra07291b] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 12/16/2022] [Indexed: 01/13/2023] Open
Abstract
To boost the photovoltaic attributes of organic photovoltaic cells, seven dithienyl diketopyrropopyrrole (TDPP) donor-based A-π-D-π-A (acceptor-bridge-donor-bridge-acceptor) type molecules (TM1-TM7) were formulated by modifying the electron accepting ends of the reference molecule (TMR). Optical and quantum chemical parameters of seven synthesized molecules were investigated using density functional theory with the MPW1PW91/6-31G(d,p) functional. Several parameters that can be used to measure and improve the efficiency of solar cells have been analyzed and summed up. These parameters include binding energy of exciton, excitation energy of electron, reorganization energies, dipole moment, molecular electrostatic potential, charge mobility, wavelength of maximum absorption, open circuit voltage, short circuit current, fill factor, density of states, transition density matrices, as well as iso-surface and non-covalent interactions. Thus, all of our proposed structures are perceived to be superior to the reference in terms of the maximum possible solar energy yield in solar cells with bulk heterojunctions, as determined by analyses of our designed molecules for the aforementioned parameters.
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Affiliation(s)
- Mafia Rani
- Department of Chemistry, University of AgricultureFaisalabad 38000Pakistan
| | - N. M. A. Hadia
- Physics Department, College of Science, Jouf UniversityP.O. Box 2014SakakaAl-JoufSaudi Arabia
| | - Ahmed M. Shawky
- Science and Technology Unit (STU), Umm Al-Qura UniversityMakkah 21955Saudi Arabia
| | - Rana Farhat Mehmood
- Department of Chemistry, Division of Science and Technology, University of EducationTownshipLahore 54770Pakista
| | - Shanza Hameed
- Department of Chemistry, University of AgricultureFaisalabad 38000Pakistan
| | - Saba Zahid
- Department of Chemistry, University of AgricultureFaisalabad 38000Pakistan
| | - Javed Iqbal
- Department of Chemistry, University of AgricultureFaisalabad 38000Pakistan,Department of Chemistry, College of Science, University of BahrainSakhir, P. O. Box 32038Bahrain
| | - Naifa S. Alatawi
- Physics Department, Faculty of Science, University of TabukTabuk 71421Saudi Arabia
| | - Asma Ahmed
- Department of Computer Science Faculty of Computer and Information Technology, University of TabukTabukSaudi Arabia
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17
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Ekim S, Kaya GE, Daştemir M, Yildirim E, Baytekin HT, Baytekin B. Organic Charge Transfer Cocrystals as Additives for Dissipation of Contact Charges on Polymers. ACS APPLIED MATERIALS & INTERFACES 2022; 14:56018-56026. [PMID: 36472348 PMCID: PMC9782351 DOI: 10.1021/acsami.2c13643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 11/13/2022] [Indexed: 06/17/2023]
Abstract
Common polymers can accumulate surface charges through contact, a phenomenon known since ancient times. This charge accumulation can have detrimental consequences in industry. It causes accidents and yields enormous economic losses. Many empirical methods have been developed to prevent the problems caused by charge accumulation. However, a general chemical approach is still missing in the literature since the charge accumulation and discharging mechanisms have not been completely clarified. The current practice to achieve charge mitigation is to increase materials conductivity by high doping of conductive additives. A recent study showed that using photoexcitation of some organic dyes, charge decay can be started remotely, and the minute amount of additive does not change the material's conductivity. Here, we show the contact charging and charge decay behavior of polydimethylsiloxane doped with a series of organic charge transfer cocrystals (CTC) of TCNQ acceptor and substituted pyrene donors (CTC-PDMS). The results show that the CTC-PDMS are antistatic, and the discharging propensity of the composites follows the calculated charge transfer degree of the complexes. On the other hand, the CTC-PDMS are still insulators, as shown by their high surface resistivities. Kelvin probe force microscopy images of the contact-charged and discharged samples show a quick potential decay in CTC domains upon illumination. Combined with the fast overall decay observed, the antistatic behavior in these insulators can be attributed to an electron transfer between the mechanoions in the polymer and the CTC frontier orbitals. We believe our results will help with the general understanding of the molecular mechanism of contact charging and discharging and help develop insulator antistatics.
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Affiliation(s)
- Sunay
Dilara Ekim
- UNAM
National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey
| | - Görkem Eylül Kaya
- UNAM
National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey
| | - Murat Daştemir
- Department
of Chemistry, Middle East Technical University, Ankara 06800, Turkey
| | - Erol Yildirim
- Department
of Chemistry, Middle East Technical University, Ankara 06800, Turkey
- Polymer
Science and Technology Program, Middle East
Technical University, Ankara 06800, Turkey
| | - H. Tarik Baytekin
- Department
of Chemistry, Middle East Technical University, Ankara 06800, Turkey
- Polymer
Science and Technology Program, Middle East
Technical University, Ankara 06800, Turkey
| | - Bilge Baytekin
- UNAM
National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey
- Department
of Chemistry, Bilkent University, Ankara 06800, Turkey
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18
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End-group engineering of non-fused benzothiadiazol derivatives with thiophene rings based small donor molecules for tuning the photovoltaic properties via DFT approach. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.114001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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19
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Impact of end-group modifications and planarity on BDP-based non-fullerene acceptors for high-performance organic solar cells by using DFT approach. J Mol Model 2022; 28:397. [PMID: 36416987 DOI: 10.1007/s00894-022-05382-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 11/09/2022] [Indexed: 11/24/2022]
Abstract
With the aim to enhance the photovoltaic properties of organic solar cells (OSCs), seven new non-fullerene acceptors (K1-K7) have been designed by end-group modifications of benzo[2,1-b:3,4-b']bis(4H-dithieno[3,2-b:2',3'-d]pyrrole) (BDP)-based small molecule "MH" (which is taken as our reference R) using computational techniques. To investigate their various optoelectronic parameters, DFT studies were applied using the B3LYP functional at 6-31G (d, p) basis set. The measurement of molecular planarity parameter (MPP) and span of deviation from plane (SDP) confirmed the planar geometries of these structures resulting in enhanced conjugation. Frontier molecular orbital (FMO) and density of states (DOS) analyses confirmed shorter band gaps of K1-K7 as compared to R, which promotes charge transfer in them. Optical properties demonstrated that these compounds have absorption range from 692 to 711 nm, quite better than the 684 nm of reference R. Molecular electrostatic potential (MEP) and Mulliken' charge distribution analysis also revealed the presence of epic charge separation in these structures. K1-K7 showed enhanced LHE values as compared to R putting emphasis on their better abilities to produce charge carrier by absorption of light. Reorganization energies showed that all newly designed compound could have better rate of charge carrier mobility (except K4) than R. Calculations of open-circuit voltage (Voc) and fill factor (FF) revealed its highest values for K3 and K4. Among newly designed molecules, K3 showed betterment in all its investigated parameters, making it a strong candidate to get enhanced power conversion efficiencies of OSCs.
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20
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Waqas M, Hadia N, Hessien M, Javaid Akram S, Shawky AM, Iqbal J, Ibrahim MA, Ahmad Khera R. Designing of symmetrical A-D-A type non-fullerene acceptors by side-chain engineering of an indacenodithienothiophene (IDTT) core based molecule: A computational approach. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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21
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Cabanas AM, Flores Araya JC, Jessop IA, Humire F. Anomalous (Exergonic) Behavior in the Transfer of Electrons between Donors and Acceptors: Mobility, Energy, Caloric Capacity, and Entropy. ACS OMEGA 2022; 7:35153-35158. [PMID: 36211079 PMCID: PMC9535709 DOI: 10.1021/acsomega.2c04094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 09/08/2022] [Indexed: 06/16/2023]
Abstract
Understanding the kinetics of electron transfer reactions involves active research in physics, chemistry, biology, and nano-tech. Here, we propose a model to apply in a broader framework by establishing a connection between thermodynamics and kinetics. From a purely thermodynamic point of view, electronic transfer Marcus' theory is revisited; consequently, calculations of thermodynamic variables such as mobility, energy, and entropy are provided. More significantly, two different regimes are explicitly established. In the anomalous region, an exergonic process associated with negative heat capacity appears. Further, in the same region, mobility, energy, and entropy decrease when the temperature increases.
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Affiliation(s)
- Ana M. Cabanas
- Departamento
de Física, FACI, Universidad de Tarapacá, Arica 1000965, Chile
| | | | - Ignacio A. Jessop
- Departamento
de Química, FACI, Universidad de
Tarapacá, Arica 1000007, Chile
| | - Fernando Humire
- Departamento
de Física, FACI, Universidad de Tarapacá, Arica 1000965, Chile
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22
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Rashid EU, Hadia NMA, Alaysuy O, Iqbal J, Hessien MM, Mersal GAM, Mehmood RF, Shawky AM, Khan MI, Khera RA. Quantum chemical modification of indaceno dithiophene-based small acceptor molecules with enhanced photovoltaic aspects for highly efficient organic solar cells. RSC Adv 2022; 12:28608-28622. [PMID: 36320510 PMCID: PMC9539724 DOI: 10.1039/d2ra05239c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 09/29/2022] [Indexed: 12/24/2022] Open
Abstract
In this computational work, with the aim of boosting the ultimate efficiency of organic photovoltaic cells, seven small acceptors (IDST1-IDST7) were proposed by altering the terminal-acceptors of reference molecule IDSTR. The optoelectronic characteristics of the IDSTR and IDST1-IDST7 molecules were investigated using the MPW1PW91/6-31G(d,p) level of theory, and solvent-state computations were examined using time-dependent density functional theory (TD-DFT) simulation. Nearly all the investigated photovoltaic aspects of the newly proposed molecules were found to be better than those of the IDSTR molecule e.g. in comparison to IDSTR, IDST1-IDST7 exhibit a narrower bandgap (E gap), lower first excitation energy (E x), and a significant red-shift in the absorbance maxima (λ max). According to the findings, IDST3 has the lowest E x (1.61 eV), the greatest λ max (770 nm), and the shortest E gap (2.09 eV). IDST1-IDST7 molecules have higher electron mobility because their RE of electrons is less than that of IDSTR. Hole mobility of IDST2-IDST7 is higher than that of the reference owing to their lower RE for hole mobility than IDSTR. By coupling with the PTB7-Th donor, the open circuit voltage (V OC) of the investigated acceptor molecules (IDSTR and IDST1-IDST7) was calculated and investigation revealed that IDST4-IDST6 molecules showed higher V OC and fill factor (FF) values than IDSTR molecules. Accordingly, the modified molecules can be seriously evaluated for actual use in the fabrication of OSCs with enhanced photovoltaic and optoelectronic characteristics in light of the findings of this study.
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Affiliation(s)
- Ehsan Ullah Rashid
- Department of Chemistry, University of AgricultureFaisalabad 38000Pakistan
| | - N. M. A. Hadia
- Physics Department, College of Science, Jouf UniversityP.O. Box 2014SakakaAl-JoufSaudi Arabia
| | - Omaymah Alaysuy
- Department of Chemistry, College of Science, University of Tabuk71474TabukSaudi Arabia
| | - Javed Iqbal
- Department of Chemistry, University of AgricultureFaisalabad 38000Pakistan,Department of Chemistry, College of Science, University of Bahrain ZallaqBahrain
| | - M. M. Hessien
- Department of Chemistry, College of Science, Taif UniversityP.O. Box 11099Taif21944Saudi Arabia
| | - Gaber A. M. Mersal
- Department of Chemistry, College of Science, Taif UniversityP.O. Box 11099Taif21944Saudi Arabia
| | - Rana Farhat Mehmood
- Department of Chemistry, Division of Science and Technology, University of EducationTownshipLahore 54770Pakistan
| | - Ahmed M. Shawky
- Science and Technology Unit (STU), Umm Al-Qura UniversityMakkah 21955Saudi Arabia
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23
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Rashid EU, Hadia NMA, Javed Iqbal, Mehmood RF, Somaily HH, Akram SJ, Shawky AM, Khan MI, Noor S, Khera RA. Engineering of W-shaped benzodithiophenedione-based small molecular acceptors with improved optoelectronic properties for high efficiency organic solar cells. RSC Adv 2022; 12:21801-21820. [PMID: 36043078 PMCID: PMC9358680 DOI: 10.1039/d2ra03280e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 07/18/2022] [Indexed: 11/21/2022] Open
Abstract
In the current study, with the objective to improve the overall performance of organic solar cells, seven new W-shaped small molecular acceptors – were developed theoretically by the end-group alteration of the reference (WR) molecule. The MPW1PW91 functional with the basis set 6-31G(d,p) was used to explore the optoelectronic properties of the WR and W1–W7 molecules and the time-dependent self-consistent filed (TD-SCF) simulation was used to investigate the solvent-state calculations. The several explored photovoltaic attributes were the absorption spectra, excitation energies, bandgap between the FMOs, oscillator strength, full width at half maximum, light-harvesting efficiency, transition density matrices, open-circuit voltage, fill factor, density of states, binding energy, interaction coefficient, etc. Overall, the results revealed a bathochromic shift in the absorption maxima (λmax), a reduced HOMO–LUMO gap (Egap), and smaller excitation energy (Ex) of the altered molecules as compared to the WR molecule. Some of the optoelectronic aspects of a well-known fused ring based acceptor named Y6 are also compared with the studied W-shaped molecules. Additionally, the W1 molecule presented the smallest Egap, along with highest λmax and the lowest Ex, amongst all, in both the evaluated media (gas and solvent). The open circuit voltage (VOC) of all the considered small molecular acceptors was calculated by pairing them with the PTB7-Th donor. Here, W6 and W7 displayed the best results for the VOC (1.48 eV and 1.51 eV), normalized VOC (57.25 and 58.41) and FF (0.9131 and 0.9144). Consequently, in light of the results of this research, the altered molecules could be considered for practical implementation in the manufacturing of OSCs with improved photovoltaic capabilities. The developed molecules have a reduced band gap and lower excitation energy. Their VOC was calculated by making complexes of them with the PTB7-Th donor.![]()
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Affiliation(s)
- Ehsan Ullah Rashid
- Department of Chemistry, University of Agriculture Faisalabad 38000 Pakistan
| | - N M A Hadia
- Physics Department, College of Science, Jouf University Sakaka Al-Jouf P. O. Box 2014 Saudi Arabia
| | - Javed Iqbal
- Department of Chemistry, University of Agriculture Faisalabad 38000 Pakistan
| | - Rana Farhat Mehmood
- Department of Chemistry, Division of Science and Technology, University of Education Township Lahore 54770 Pakistan
| | - H H Somaily
- Research Center for Advanced Materials Science (RCAMS), King Khalid University Abha 61413 P.O. Box 9004 Saudi Arabia.,Department of Physics, Faculty of Science, King Khalid University Abha P.O. Box 9004 Saudi Arabia
| | - Sahar Javaid Akram
- Department of Chemistry, University of Agriculture Faisalabad 38000 Pakistan
| | - Ahmed M Shawky
- Science and Technology Unit (STU), Umm Al-Qura University Makkah 21955 Saudi Arabia
| | - Muhammad Imran Khan
- Department of Chemistry, University of Agriculture Faisalabad 38000 Pakistan
| | - Sadia Noor
- Department of Chemistry, University of Agriculture Faisalabad 38000 Pakistan
| | - Rasheed Ahmad Khera
- Department of Chemistry, University of Agriculture Faisalabad 38000 Pakistan
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24
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Hsu CP, Hammarström L, Newton MD. 65 years of electron transfer. J Chem Phys 2022; 157:020401. [PMID: 35840385 DOI: 10.1063/5.0102889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Chao-Ping Hsu
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Leif Hammarström
- Department of Chemistry-Ångström Laboratory, Box 523, 75120 Uppsala, Sweden
| | - Marshall D Newton
- Chemistry Department, Brookhaven National Laboratory, Box 5000, Upton, New York 11973-5000, USA
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25
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Vong D, Nematiaram T, Dettmann MA, Murrey TL, Cavalcante LSR, Gurses SM, Radhakrishnan D, Daemen LL, Anthony JE, Koski KJ, Kronawitter CX, Troisi A, Moulé AJ. Quantitative Hole Mobility Simulation and Validation in Substituted Acenes. J Phys Chem Lett 2022; 13:5530-5537. [PMID: 35695809 DOI: 10.1021/acs.jpclett.2c00898] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Knowledge of the full phonon spectrum is essential to accurately calculate the dynamic disorder (σ) and hole mobility (μh) in organic semiconductors (OSCs). However, most vibrational spectroscopy techniques under-measure the phonons, thus limiting the phonon validation. Here, we measure and model the full phonon spectrum using multiple spectroscopic techniques and predict μh using σ from only the Γ-point and the full Brillouin zone (FBZ). We find that only inelastic neutron scattering (INS) provides validation of all phonon modes, and that σ in a set of small molecule semiconductors can be miscalculated by up to 28% when comparing Γ-point against FBZ calculations. A subsequent mode analysis shows that many modes contribute to σ and that no single mode dominates. Our results demonstrate the importance of a thoroughly validated phonon calculation, and a need to develop design rules considering the full spectrum of phonon modes.
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Affiliation(s)
- Daniel Vong
- Department of Materials Science and Engineering, University of California Davis, Davis, California 95616-5270, United States
| | - Tahereh Nematiaram
- Department of Chemistry, University of Liverpool, L69 7ZD Liverpool, U.K
| | - Makena A Dettmann
- Department of Materials Science and Engineering, University of California Davis, Davis, California 95616-5270, United States
| | - Tucker L Murrey
- Department of Materials Science and Engineering, University of California Davis, Davis, California 95616-5270, United States
| | - Lucas S R Cavalcante
- Department of Chemical Engineering, University of California Davis, Davis, California 95616-5294, United States
| | - Sadi M Gurses
- Department of Chemical Engineering, University of California Davis, Davis, California 95616-5294, United States
| | - Dhanya Radhakrishnan
- Department of Chemistry, University of California Davis, Davis, California 95616, United States
| | - Luke L Daemen
- Oak Ridge National Lab, Oak Ridge, Tennessee 37831, United States
| | - John E Anthony
- University of Kentucky, Lexington, Kentucky 40506-0055, United States
| | - Kristie J Koski
- Department of Chemistry, University of California Davis, Davis, California 95616, United States
| | - Coleman X Kronawitter
- Department of Chemical Engineering, University of California Davis, Davis, California 95616-5294, United States
| | - Alessandro Troisi
- Department of Chemistry, University of Liverpool, L69 7ZD Liverpool, U.K
| | - Adam J Moulé
- Department of Chemical Engineering, University of California Davis, Davis, California 95616-5294, United States
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26
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Rani M, Iqbal J, Farhat Mehmood R, Ullah Rashid E, Misbah, Rani S, Raheel M, Ahmad Khera R. Strategies toward the end-group modifications of indacenodithiophene based non-fullerene small molecule acceptor to improve the efficiency of Organic solar Cells; a DFT study. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113747] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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27
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Guo G, Zhang J, Han J, Deng J, Zhang G. Multiscale Study of the Charge Transport Properties of Silicone Rubber Oligomers. J Phys Chem A 2022; 126:1369-1377. [PMID: 35171592 DOI: 10.1021/acs.jpca.1c10205] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Polymer dielectrics are widely used as insulation in electronic and electrical equipment. The charge transport process in polymer dielectrics under a high electric field, which is considered to result in electrical aging and even breakdown of equipment insulation, has attracted considerable attention. Based on a localized charge transfer model, the charge transport mechanism for typical silicone rubber (SR) insulating materials was studied by multiscale methods. A model of silicone rubber oligomers under standard conditions was generated by classical molecular dynamics. The frontier molecular orbitals and projected density of states for the SR oligomer were obtained via quantum chemistry methods. The electronic coupling, reorganization energy, and free energy difference for both electron and hole transfer processes between adjacent SR molecules in the molecular dynamics model were calculated. Both hole transfer and electron transfer in SR conform to an intermolecular hopping mechanism due to their high intramolecular reorganization energy and low intermolecular electronic coupling. The results of normal mode analysis for reorganization energy indicate that the high-temperature approximation holds for charge transport in SR around or above room temperature. The charge transfer trajectory and charge mobility in SR were simulated based on kinetic Monte Carlo simulations. The hole and electron mobilities at room temperature were calculated to be 7.24 × 10-11 and 2.76 × 10-9 cm2/Vs, respectively, which agrees with the experimental data. Both electron transport and hole transport in SR show thermal activation characteristics, with corresponding activation energies of 358 and 314 meV, respectively. This work suggests a physical model to describe the charge transport process in SR polymer dielectrics.
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Affiliation(s)
- Guangzhi Guo
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Juning Zhang
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Jiarui Han
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Junbo Deng
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Guanjun Zhang
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, P. R. China
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Rafiq M, Salim M, Noreen S, Ahmad Khera R, Noor S, Yaqoob U, Iqbal J. End-capped modification of dithienosilole based small donor molecules for high performance organic solar cells using DFT approach. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118138] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Feng X, Peng X, Peng B, Li Z, Huang W, Yang S, Pei K, Sun Z, Huang F, Li H, Shuai Z, Zhai T. Effect of Strong Intermolecular Interaction in 2D Inorganic Molecular Crystals. J Am Chem Soc 2021; 143:20192-20201. [PMID: 34780690 DOI: 10.1021/jacs.1c08030] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Strong intermolecular interactions in 2D organic molecular crystals arising from π-π stacking have been widely explored to achieve high thermal stability, high carrier mobility, and novel physical properties, which have already produced phenomenal progress. However, strong intermolecular interactions in 2D inorganic molecular crystals (2DIMCs) have rarely been investigated, severely limiting both the fundamental research in molecular physics and the potential applications of 2DIMCs for optoelectronics. Here, the effect of strong intermolecular interactions induced by unique short intermolecular Se-Se and P-Se contacts in 2D α-P4Se3 nanoflakes is reported. On the basis of theoretical calculations of the charge density distribution and an analysis of the thermal expansion and plastic-crystal transition, the physical picture of strong intermolecular interactions can be elucidated as a higher charge density between adjacent P4Se3 molecules, arising from an orderly and close packing of P4Se3 molecules. More importantly, encouraged by the strong intermolecular coupling, the in-plane mobility of α-P4Se3 nanoflakes is first calculated with a quantum nuclear tunneling model, and a competitive hole mobility of 0.4 cm2 V-1 s-1 is obtained. Our work sheds new light on the intermolecular interactions in 2D inorganic molecular crystals and is highly significant for promoting the development of molecular physics and optoelectronics.
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Affiliation(s)
- Xin Feng
- State Key Laboratory of Materials Processing and Die & Mould Technology and School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Xingliang Peng
- MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Baixin Peng
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China
| | - Zexin Li
- State Key Laboratory of Materials Processing and Die & Mould Technology and School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Wentao Huang
- State Key Laboratory of Materials Processing and Die & Mould Technology and School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Sijie Yang
- State Key Laboratory of Materials Processing and Die & Mould Technology and School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Ke Pei
- State Key Laboratory of Materials Processing and Die & Mould Technology and School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Zongdong Sun
- State Key Laboratory of Materials Processing and Die & Mould Technology and School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Fuqiang Huang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China.,State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China
| | - Huiqiao Li
- State Key Laboratory of Materials Processing and Die & Mould Technology and School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Zhigang Shuai
- MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Tianyou Zhai
- State Key Laboratory of Materials Processing and Die & Mould Technology and School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
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Yaqoob U, Raza Ayub A, Rafiq S, Khalid M, El-Badry YA, El-Bahy ZM, Iqbal J. Structural, optical and photovoltaic properties of unfused Non-Fullerene acceptors for efficient solution processable organic solar cell (Estimated PCE greater than 12.4%): A DFT approach. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117428] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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31
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Aracena A, Rezende MC, García M, Muñoz-Becerra K, Wrighton-Araneda K, Valdebenito C, Celis F, Vásquez O. Alkylated Benzodithienoquinolizinium Salts as Possible Non-Fullerene Organic N-Type Semiconductors: An Experimental and Theoretical Study. MATERIALS (BASEL, SWITZERLAND) 2021; 14:6239. [PMID: 34771765 PMCID: PMC8584425 DOI: 10.3390/ma14216239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 10/14/2021] [Accepted: 10/14/2021] [Indexed: 11/16/2022]
Abstract
Three photobicyclized benzodithienoquinolizinium tetrafluoroborates (BPDTQBF4) were prepared and evaluated by UV-Vis and fluorescence spectral, electrochemical analysis, and by theoretical calculations as possible organic n-type semiconductors. Evaluation and comparison of their LUMO levels, HOMO-LUMO energy gaps as monomeric and π-stacked dimers with those of other materials, suggest their potential as organic n-type semiconductors. Calculations of their relative charge carrier mobilities confirmed this potential for one derivative with a long (C-14) alkyl chain appended to the polycyclic planar π-system.
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Affiliation(s)
- Andrés Aracena
- Instituto de Ciencias Naturales, Universidad de las Américas, Manuel Montt 948, Santiago 7500000, Chile
| | - Marcos Caroli Rezende
- Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago 9160000, Chile;
| | - Macarena García
- Laboratorio de Procesos Fotónicos y Electroquímicos, Facultad de Ciencias Naturales y Exactas, Universidad de Playa Ancha, Valparaíso 2340000, Chile; (M.G.); (F.C.)
| | - Karina Muñoz-Becerra
- Dirección de Investigación y Postgrado, Universidad de Aconcagua, Pedro de Villagra 2265, Santiago 7630000, Chile;
| | - Kerry Wrighton-Araneda
- Programa Institucional de Fomento a la Investigación, Desarrollo e Innovación, Universidad Tecnológica Metropolitana, Ignacio Valdivieso 2409, Santiago 8940577, Chile;
| | - Cristian Valdebenito
- Centro Integrativo de Química y Biología Aplicada (CIBQA), Facultad de Ciencias de la Salud, Universidad Bernardo O’Higgins, Santiago 8320000, Chile;
| | - Freddy Celis
- Laboratorio de Procesos Fotónicos y Electroquímicos, Facultad de Ciencias Naturales y Exactas, Universidad de Playa Ancha, Valparaíso 2340000, Chile; (M.G.); (F.C.)
| | - Octavio Vásquez
- Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago 8320000, Chile;
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Peng X, Li Q, Shuai Z. Influences of dynamic and static disorder on the carrier mobility of BTBT-C12 derivatives: a multiscale computational study. NANOSCALE 2021; 13:3252-3262. [PMID: 33533394 DOI: 10.1039/d0nr08320h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The role of dynamic and static disorder has been widely discussed for carrier transport in organic semiconductors. In this work, we apply a multiscale approach by combining molecular dynamics simulations, quantum mechanics calculations and kinetic Monte-Carlo simulations to study the influence of dynamic and static disorder on the hole mobility of four didodecyl[1]benzothieno[3,2-b]benzothiophene (BTBT-C12) isomers. It is found that the dynamic disorder of transfer integral tends to decrease the mobility for quasi-1D (quasi one-dimensional) BTBT1 and BTBT4 isomers and increase the mobility for 2D (two-dimensional) BTBT2 and BTBT3 isomers, while the dynamic disorder of site energy tends to decrease mobility for all the four isomers; however, the reduction in 2D molecules is much less than that in quasi-1D molecules. Results show that trap defects could reduce the mobility for both the quasi-1D and 2D molecular structures significantly, even to several orders of magnitude. In addition, our work also reveals that there might exist two kinds of oxidation defects of the scatter type for the concerned isomers, which thus leads to greater reduction in mobility for the quasi-1D molecular structures than the 2D molecular structures. The study shows that the 2D molecular structures are favored over the quasi-1D or 1D molecular structure, and it is expected that these results could be used to shed light on device design in organic electronics.
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Affiliation(s)
- Xingliang Peng
- MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China.
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