1
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Schütze Y, Gayen D, Palczynski K, de Oliveira Silva R, Lu Y, Tovar M, Partovi-Azar P, Bande A, Dzubiella J. How Regiochemistry Influences Aggregation Behavior and Charge Transport in Conjugated Organosulfur Polymer Cathodes for Lithium-Sulfur Batteries. ACS NANO 2023; 17:7889-7900. [PMID: 37014093 PMCID: PMC10141565 DOI: 10.1021/acsnano.3c01523] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 03/29/2023] [Indexed: 06/19/2023]
Abstract
For lithium-sulfur (Li-S) batteries to become competitive, they require high stability and energy density. Organosulfur polymer-based cathodes have recently shown promising performance due to their ability to overcome common limitations of Li-S batteries, such as the insulating nature of sulfur. In this study, we use a multiscale modeling approach to explore the influence of the regiochemistry of a conjugated poly(4-(thiophene-3-yl)benzenethiol) (PTBT) polymer on its aggregation behavior and charge transport. Classical molecular dynamics simulations of the self-assembly of polymer chains with different regioregularity show that a head-to-tail/head-to-tail regularity can form a well-ordered crystalline phase of planar chains allowing for fast charge transport. Our X-ray diffraction measurements, in conjunction with our predicted crystal structure, confirm the presence of crystalline phases in the electropolymerized PTBT polymer. We quantitatively describe the charge transport in the crystalline phase in a band-like regime. Our results give detailed insights into the interplay between microstructural and electrical properties of conjugated polymer cathode materials, highlighting the effect of polymer chain regioregularity on its charge transport properties.
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Affiliation(s)
- Yannik Schütze
- Research
Group for Simulations of Energy Materials, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
- Theoretical
Chemistry, Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Diptesh Gayen
- Applied Theoretical
Physics - Computational Physics, Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Straße 3, 79104 Freiburg, Germany
| | - Karol Palczynski
- Research
Group for Simulations of Energy Materials, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Ranielle de Oliveira Silva
- Department
Electrochemical Energy Storage, Helmholtz-Zentrum
Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Yan Lu
- Department
Electrochemical Energy Storage, Helmholtz-Zentrum
Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
- Institute
of Chemistry, University of Potsdam, Am Neuen Palais 10, 14469 Potsdam, Germany
| | - Michael Tovar
- Department
Structure and Dynamics of Energy Materials, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Pouya Partovi-Azar
- Institute
for Chemistry, Martin Luther Universität
Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany
| | - Annika Bande
- Theory of
Electron Dynamics and Spectroscopy, Helmholtz-Zentrum
Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Joachim Dzubiella
- Research
Group for Simulations of Energy Materials, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
- Applied Theoretical
Physics - Computational Physics, Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Straße 3, 79104 Freiburg, Germany
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2
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Chung YK, Lee J, Lee WG, Sung D, Chae S, Oh S, Choi KH, Kim BJ, Choi JY, Huh J. Theoretical Study of Anisotropic Carrier Mobility for Two-Dimensional Nb 2Se 9 Material. ACS OMEGA 2021; 6:26782-26790. [PMID: 34661032 PMCID: PMC8515826 DOI: 10.1021/acsomega.1c03728] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 09/20/2021] [Indexed: 06/13/2023]
Abstract
Finding new materials with satisfying all the desired criteria for nanodevices is an extremely difficult work. Here, we introduce a novel Nb2Se9 material as a promising candidate, capable of overcoming some physical limitations, such as a suitable band gap, high carrier mobility, and chemical stability. Unlike graphene, it has a noticeable band gap and no dangling bonds at surfaces that deteriorate transport properties, owing to its molecular chain structure. Using density functional theory (DFT) calculations with deformation potential (DP) theory, we find that the electron mobility of 2D Nb2Se9 across the axis direction reaches up to 2.56 × 103 cm2 V-1 s-1 and is approximately 2.5-6 times higher than the mobility of other 2D materials, such as MoS2, black phosphorous, and InSe, at room temperature. Moreover, the mobility of 2D Nb2Se9 is highly anisotropic (μ a /μ c ≈ 6.5). We demonstrate the potential of 2D Nb2Se9 for applications in nanoscale electronic devices and, possibly, mid-infrared photodetectors.
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Affiliation(s)
- You Kyoung Chung
- Department
of Chemistry, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Junho Lee
- Department
of Chemistry, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Weon-Gyu Lee
- Department
of Chemistry, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Dongchul Sung
- Department
of Chemistry, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Sudong Chae
- School
of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Seungbae Oh
- School
of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Kyung Hwan Choi
- School
of Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Bum Jun Kim
- School
of Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jae-Young Choi
- School
of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
- School
of Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Joonsuk Huh
- Department
of Chemistry, Sungkyunkwan University, Suwon 16419, Republic of Korea
- School
of Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon 16419, Republic of Korea
- Institute
of Quantum Biophysics, Sungkyunkwan University, Suwon 16419, Republic of Korea
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3
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Tang M, Wang B, Lou H, Li F, Bergara A, Yang G. Anisotropic and High-Mobility C 3S Monolayer as a Photocatalyst for Water Splitting. J Phys Chem Lett 2021; 12:8320-8327. [PMID: 34428049 DOI: 10.1021/acs.jpclett.1c02430] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Taking into account the high conductivity and stability of carbon materials, such as graphene, and the strong polar covalent bonding character of main-group compounds, we explore potential 2D materials in the C-S binary system through first-principles structure search calculations. Herein, a hitherto unknown semiconducting C3S monolayer is identified, consisting of well-known n-biphenyl and S atom linked benzenes, exhibiting an obvious direction-dependent atomic arrangement. Thus, it exhibits anisotropic mechanical properties and carrier mobility. Its electron mobility reaches 2.14 × 104 cm2 V-1 s-1 in the b direction, along which n-biphenyl units are arranged, and is much higher than that in the well-used MoS2 monolayer and black phosphorus. Meanwhile, the C3S monolayer has high optical absorption coefficients (105 cm-1), high thermal and dynamical stabilities, and a moderate ability to split water. All these desirable properties make the C3S monolayer a promising candidate for applications in novel optoelectronic devices.
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Affiliation(s)
- Meng Tang
- Centre for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun 130024, China
- State Key Laboratory of Metastable Materials Science & Technology and Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, China
| | - Bo Wang
- Centre for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun 130024, China
- State Key Laboratory of Metastable Materials Science & Technology and Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, China
| | - Huan Lou
- Centre for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun 130024, China
- State Key Laboratory of Metastable Materials Science & Technology and Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, China
| | - Fei Li
- State Key Laboratory of Metastable Materials Science & Technology and Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, China
| | - Aitor Bergara
- Departamento de Física, Universidad del País Vasco-Euskal Herriko Unibertsitatea, UPV/EHU, 48080 Bilbao, Spain
- Donostia International Physics Center (DIPC), 20018 Donostia, Spain
- Centro de Física de Materiales CFM, Centro Mixto CSIC-UPV/EHU, 20018 Donostia, Spain
| | - Guochun Yang
- Centre for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun 130024, China
- State Key Laboratory of Metastable Materials Science & Technology and Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, China
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4
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Yan L, Wang M, Zhai C, Zhao L, Lin S. Symmetry Breaking Induced Anisotropic Carrier Transport and Remarkable Thermoelectric Performance in Mixed Halide Perovskites CsPb(I 1-xBr x) 3. ACS APPLIED MATERIALS & INTERFACES 2020; 12:40453-40464. [PMID: 32790315 DOI: 10.1021/acsami.0c07501] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We present a combination of first-principles calculations and the Boltzmann transport theory to understand the carrier transport and thermoelectric performance of mixed halide perovskite alloys CsPb(I1-xBrx)3 with different Br compositions. Our computational results correlate the conduction band splitting in CsPb(I1-xBrx)3 to the significant anisotropy in their carrier transport properties, such as effective masses and deformation potential constants. Such band splitting originates from the symmetry-broken crystal structures of CsPb(I1-xBrx)3 polymorphs: with residue stresses/strains in asymmetric CsPb(I1-xBrx)3, nondegenerate orbitals reconstruct the conduction band and reduce the Pb-halide antibonding character along certain directions. While the Seebeck coefficient (S) and the relaxation time-normalized electrical conductivity (σ/τ) show weak directional anisotropy, the carrier relaxation time (τ) is highly direction-dependent. The reconstruction of the conduction band finally leads to significantly anisotropic and enhanced thermoelectric power factors (PF = S2σ) in CsPb(I1-xBrx)3 compared to those in pure CsPbI3 and CsPbBr3, showing anomalous nonlinear alloy behavior. A delicate balance between S2σ and combined measurement of the carrier effective mass and deformation potential constant, m*EDP, is confirmed. The lattice thermal conductivities of CsPb(I1-xBrx)3 are significantly suppressed compared to those of their pure counterparts due to strong mass disordering and strain fields upon halogen substitution. As a result, symmetry breaking in CsPb(I1-xBrx)3 leads to anisotropy in carrier transport, high PF, and scattered phonon transport (ultralow thermal conductivity), concurrently contributing to their promising thermoelectric figures of merit (ZT) up to 1.7 at room temperature. The principles behind the asymmetry-induced factors would serve as new design concepts to tailor the thermoelectric properties of alloys, mixtures, superlattices, and low-dimensional materials.
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Affiliation(s)
- Lifu Yan
- National Engineering Research Center of Turbo-Generator Vibration, School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, China
| | - Mingchao Wang
- Department of Materials Science and Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Chenxi Zhai
- Department of Mechanical Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, Florida 32310, United States
| | - Lingling Zhao
- National Engineering Research Center of Turbo-Generator Vibration, School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, China
| | - Shangchao Lin
- Institute of Engineering Thermophysics, School of Mechanical and Power Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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5
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Shuai Z, Li W, Ren J, Jiang Y, Geng H. Applying Marcus theory to describe the carrier transports in organic semiconductors: Limitations and beyond. J Chem Phys 2020; 153:080902. [PMID: 32872875 DOI: 10.1063/5.0018312] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Marcus theory has been successfully applied to molecular design for organic semiconductors with the aid of quantum chemistry calculations for the molecular parameters: the intermolecular electronic coupling V and the intramolecular charge reorganization energy λ. The assumption behind this is the localized nature of the electronic state for representing the charge carriers, being holes or electrons. As far as the quantitative description of carrier mobility is concerned, the direct application of Marcus semiclassical theory usually led to underestimation of the experimental data. A number of effects going beyond such a semiclassical description will be introduced here, including the quantum nuclear effect, dynamic disorder, and delocalization effects. The recently developed quantum dynamics simulation at the time-dependent density matrix renormalization group theory is briefly discussed. The latter was shown to be a quickly emerging efficient quantum dynamics method for the complex system.
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Affiliation(s)
- Zhigang Shuai
- MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, 100084 Beijing, People's Republic of China
| | - Weitang Li
- MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, 100084 Beijing, People's Republic of China
| | - Jiajun Ren
- MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, 100084 Beijing, People's Republic of China
| | - Yuqian Jiang
- Laboratory for Nanosystem and Hierarchy Fabrication, National Center for Nanoscience and Technology, Chinese Academy of Sciences, 100084 Beijing, People's Republic of China
| | - Hua Geng
- Department of Chemistry, Capital Normal University, 100048 Beijing, People's Republic of China
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6
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Nematiaram T, Troisi A. Modeling charge transport in high-mobility molecular semiconductors: Balancing electronic structure and quantum dynamics methods with the help of experiments. J Chem Phys 2020; 152:190902. [DOI: 10.1063/5.0008357] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Affiliation(s)
- Tahereh Nematiaram
- Department of Chemistry and Materials Innovation Factory, University of Liverpool, Liverpool L69 7ZD, United Kingdom
| | - Alessandro Troisi
- Department of Chemistry and Materials Innovation Factory, University of Liverpool, Liverpool L69 7ZD, United Kingdom
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7
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Jing Z, Wang H, Feng X, Xiao B, Ding Y, Wu K, Cheng Y. Superior Thermoelectric Performance of Ordered Double Transition Metal MXenes: Cr 2TiC 2T 2 (T = -OH or -F). J Phys Chem Lett 2019; 10:5721-5728. [PMID: 31507188 DOI: 10.1021/acs.jpclett.9b01827] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Using SCAN-rVV10+U, we show Cr2TiC2 and Cr2TiC2T2 (T = -F and -OH) MXenes are moderate band gap semiconductors mostly in the antiferromagnetic state. All investigated MXene structures show large Seebeck coefficients (>400 μV/K), especially Cr2TiC2 (>800 μV/K) and Cr2TiC2F2 (>700 μV/K). The hole relaxation time of p-type Cr2TiC2(OH)2 is found to be ∼8 ps, ensuring its superior electron transport properties in comparison to other investigated MXenes. It is also discovered that the surface functionalization could decrease the phonon thermal conduction and that Cr2TiC2(OH)2 has the smallest lattice thermal conductivity (∼6.5 W/m·K) and the largest electron thermal conduction (>50 W/m·K with n = 1019 cm-3). We predict the ZT value of p-type Cr2TiC2(OH)2 can reach 3.0 at 600 K with the maximum thermoelectric conversion efficiency of 20%. Overall, the thermoelectric property of Cr-based ordered double transition metal MXenes is far superior to that of any known two-dimensional structures in the MXene family.
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Affiliation(s)
- Ziang Jing
- School of Electrical Engineering, State Key Laboratory of Electrical Insulation and Power Equipment , Xi'an Jiaotong University , Xi'an 710049 , China
| | - Hangyu Wang
- School of Electrical Engineering, State Key Laboratory of Electrical Insulation and Power Equipment , Xi'an Jiaotong University , Xi'an 710049 , China
| | - Xianghui Feng
- School of Electrical Engineering, State Key Laboratory of Electrical Insulation and Power Equipment , Xi'an Jiaotong University , Xi'an 710049 , China
| | - Bing Xiao
- School of Electrical Engineering, State Key Laboratory of Electrical Insulation and Power Equipment , Xi'an Jiaotong University , Xi'an 710049 , China
| | - Yingchun Ding
- College of Optoelectronics Engineering , Chengdu University of Information Technology , Chengdu 610225 , China
| | - Kai Wu
- School of Electrical Engineering, State Key Laboratory of Electrical Insulation and Power Equipment , Xi'an Jiaotong University , Xi'an 710049 , China
| | - Yonghong Cheng
- School of Electrical Engineering, State Key Laboratory of Electrical Insulation and Power Equipment , Xi'an Jiaotong University , Xi'an 710049 , China
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8
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Shi W, Deng T, Wu G, Hippalgaonkar K, Wang JS, Yang SW. Unprecedented Enhancement of Thermoelectric Power Factor Induced by Pressure in Small-Molecule Organic Semiconductors. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1901956. [PMID: 31348561 DOI: 10.1002/adma.201901956] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 06/18/2019] [Indexed: 06/10/2023]
Abstract
Establishing the relationship between pressure and heat-electricity interconversion in van der Waals bonded small-molecule organic semiconductors is critical not only in designing flexible thermoelectric materials, but also in developing organic electronics. Here, based on first-principles calculations and using naphthalene as a case study, an unprecedented elevation of p-type thermoelectric power factor induced by pressure is demonstrated; and the power factor increases by 267% from 159.5 µW m-1 K-2 under ambient conditions to 585.8 µW m-1 K-2 at 2.1 GPa. The underlying mechanism is attributed to the dramatic inhibition of lattice-vibration-caused electronic scattering. Furthermore, it is revealed that both restraining low-frequency intermolecular vibrational modes and increasing intermolecular electronic coupling are two essential factors that effectively suppress the electron-phonon scattering. From the standpoint of molecular design, these two conditions can be achieved by extending the π-conjugated backbones, introducing long alkyl sidechains to the π-cores, and substituting heteroatoms in the π-cores.
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Affiliation(s)
- Wen Shi
- Institute of High Performance Computing, Agency for Science, Technology and Research, 1 Fusionopolis Way, #16-16 Connexis, Singapore, 138632, Republic of Singapore
| | - Tianqi Deng
- Institute of High Performance Computing, Agency for Science, Technology and Research, 1 Fusionopolis Way, #16-16 Connexis, Singapore, 138632, Republic of Singapore
| | - Gang Wu
- Institute of High Performance Computing, Agency for Science, Technology and Research, 1 Fusionopolis Way, #16-16 Connexis, Singapore, 138632, Republic of Singapore
| | - Kedar Hippalgaonkar
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research, 2 Fusionopolis Way, #08-03 Innovis, Singapore, 138634, Republic of Singapore
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Republic of Singapore
| | - Jian-Sheng Wang
- Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117551, Republic of Singapore
| | - Shuo-Wang Yang
- Institute of High Performance Computing, Agency for Science, Technology and Research, 1 Fusionopolis Way, #16-16 Connexis, Singapore, 138632, Republic of Singapore
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9
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Jiang Y, Geng H, Li W, Shuai Z. Understanding Carrier Transport in Organic Semiconductors: Computation of Charge Mobility Considering Quantum Nuclear Tunneling and Delocalization Effects. J Chem Theory Comput 2019; 15:1477-1491. [DOI: 10.1021/acs.jctc.8b00779] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yuqian Jiang
- Laboratory for Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100084, People’s Republic of China
| | - Hua Geng
- Department of Chemistry, Capital Normal University, Beijing 100048, 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
| | - Zhigang Shuai
- 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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10
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Shi W, Wu G, Yong X, Deng T, Wang JS, Zheng JC, Xu J, Sullivan MB, Yang SW. Orbital-Engineering-Based Screening of π-Conjugated d 8 Transition-Metal Coordination Polymers for High-Performance n-Type Thermoelectric Applications. ACS APPLIED MATERIALS & INTERFACES 2018; 10:35306-35315. [PMID: 30251818 DOI: 10.1021/acsami.8b13877] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Extraordinary progress has been achieved in polymer-based thermoelectric materials in recent years. New emerging π-conjugated transition-metal coordination polymers are one of the best n-type polymer-based thermoelectric materials. However, the microscopic descriptions on geometric structures, orbital characteristics, and most importantly, thermoelectric properties remain elusive, which has seriously hampered the experimentalists to draw a straightforward design strategy for new n-type polymer-based thermoelectric materials. Herein, we assess the n-type thermoelectric properties of 20 π-conjugated d8 metal center coordination polymers and rationalize their thermoelectric properties in terms of molecular geometry, orbital nature, and electron-phonon coupling based on first-principles calculations. An explicit screening rule for high-performance n-type π-conjugated transition-metal coordination polymeric thermoelectric materials was found, i.e., smaller metal center d orbital component ratio in the conduction band minimum, weaker electron-phonon coupling, higher intrinsic mobility, and thereby higher thermoelectric power factor can be achieved. Guided by this rule, poly(Pd-C2S4) and poly(Ni-C2Se4) show very high power factors. We built a map of high-performance π-conjugated transition-metal coordination polymers for n-type thermoelectric applications, which will help to accelerate the screening and design of innovative n-type thermoelectric polymers.
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Affiliation(s)
- Wen Shi
- Institute of High Performance Computing , Agency for Science, Technology and Research , 1 Fusionopolis Way, #16-16 Connexis , Singapore 138632 , Singapore
| | - Gang Wu
- Institute of High Performance Computing , Agency for Science, Technology and Research , 1 Fusionopolis Way, #16-16 Connexis , Singapore 138632 , Singapore
| | - Xue Yong
- Institute of High Performance Computing , Agency for Science, Technology and Research , 1 Fusionopolis Way, #16-16 Connexis , Singapore 138632 , Singapore
| | - Tianqi Deng
- Institute of High Performance Computing , Agency for Science, Technology and Research , 1 Fusionopolis Way, #16-16 Connexis , Singapore 138632 , Singapore
| | - Jian-Sheng Wang
- Department of Physics , National University of Singapore , Singapore 117551 , Singapore
| | - Jin-Cheng Zheng
- Department of Physics, Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices , Xiamen University , Xiamen 361005 , China
| | - Jianwei Xu
- Institute of Materials Research and Engineering , Agency for Science, Technology and Research , 2 Fusionopolis Way, #08-03 Innovis , Singapore 138634 , Singapore
| | - Michael B Sullivan
- Institute of High Performance Computing , Agency for Science, Technology and Research , 1 Fusionopolis Way, #16-16 Connexis , Singapore 138632 , Singapore
| | - Shuo-Wang Yang
- Institute of High Performance Computing , Agency for Science, Technology and Research , 1 Fusionopolis Way, #16-16 Connexis , Singapore 138632 , Singapore
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11
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Jiang Y, Shuai Z, Liu M. The isotope effect on charge transport for bithiophene and di(n-hexyl)-bithiophene: impacts of deuteration position, deuteration number and side chain substitution position. Theor Chem Acc 2018. [DOI: 10.1007/s00214-018-2221-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Niu Y, Li W, Peng Q, Geng H, Yi Y, Wang L, Nan G, Wang D, Shuai Z. MOlecular MAterials Property Prediction Package (MOMAP) 1.0: a software package for predicting the luminescent properties and mobility of organic functional materials. Mol Phys 2018. [DOI: 10.1080/00268976.2017.1402966] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Yingli Niu
- Department of Physics, School of Science, Beijing Jiaotong University, Beijing, China
| | - Wenqiang Li
- Department of Chemistry, Tsinghua University, Beijing, China
| | - Qian Peng
- Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
| | - Hua Geng
- Department of Chemistry, Capital Normal University, Beijing, China
| | - Yuanping Yi
- Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
| | - Linjun Wang
- Department of Chemistry, Zhejiang University, Hangzhou, China
| | - Guangjun Nan
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, China
| | - Dong Wang
- Department of Chemistry, Tsinghua University, Beijing, China
| | - Zhigang Shuai
- Department of Chemistry, Tsinghua University, Beijing, China
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13
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Xu K, Xu Y, Zhang H, Peng B, Shao H, Ni G, Li J, Yao M, Lu H, Zhu H, Soukoulis CM. The role of Anderson’s rule in determining electronic, optical and transport properties of transition metal dichalcogenide heterostructures. Phys Chem Chem Phys 2018; 20:30351-30364. [DOI: 10.1039/c8cp05522j] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We have investigated the structure and electronic, mechanical, transport and optical properties of van der Waals transition metal dichalcogenide heterostructures using first-principles calculations.
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14
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Xu Y, Ning Z, Zhang H, Ni G, Shao H, Peng B, Zhang X, He X, Zhu Y, Zhu H. Anisotropic ultrahigh hole mobility in two-dimensional penta-SiC2 by strain-engineering: electronic structure and chemical bonding analysis. RSC Adv 2017. [DOI: 10.1039/c7ra06903k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
At room temperature, the uniaxial strain (εx = −8%) can enhance the hole mobility of monolayer penta-SiC2 along the b-direction by almost three orders of magnitude up to 1.14 × 106 cm2 V−1 s−1, which is much larger than that of graphene.
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15
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Jiang Y, Zhong X, Shi W, Peng Q, Geng H, Zhao Y, Shuai Z. Nuclear quantum tunnelling and carrier delocalization effects to bridge the gap between hopping and bandlike behaviors in organic semiconductors. NANOSCALE HORIZONS 2016; 1:53-59. [PMID: 32260602 DOI: 10.1039/c5nh00054h] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The experimental carrier mobility value of organic semiconductors has been increasing rapidly in recent years to well exceed the theoretical limit based on the hopping model calculated using the semi-classical Marcus theory, calling for better understanding and evaluation of carrier mobility. On the other hand, bandlike transport behavior has been observed for some ultra-pure and closely-packed organic single crystals. In this work, we identify the roles of quantum nuclear tunnelling and the charge delocalization effects, leading to a comprehensive computational approach to assess the carrier mobility of organic semiconductors. We present the first-principles evaluated mobility results for some representative organic transport materials at four levels ranging from semiclassical hopping to quantum nuclear enabled hopping and to quantum wavepacket diffusion, and eventually to complete bandlike descriptions. We provide a comprehensive tool to assess the carrier mobility in organic semiconductors based on such improved understanding.
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Affiliation(s)
- Yuqian Jiang
- MOE Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China.
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16
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Jiang Y, Peng Q, Geng H, Ma H, Shuai Z. Negative isotope effect for charge transport in acenes and derivatives--a theoretical conclusion. Phys Chem Chem Phys 2015; 17:3273-80. [PMID: 25521587 DOI: 10.1039/c4cp04826a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The isotope effect (IE) on charge transport in polyacenes was proposed in 1970 to judge the transport mechanism. However, there had not been a definitive answer for more than 40 years as to whether such an IE is positive or negative, both theoretically and experimentally, because either theory was too approximate or the experimental estimate was too rough to make a judgment. Employing the quantum nuclear tunneling model for organic semiconductors, we investigate the IE on both hole and electron transport for acenes and their derivatives. We show that both (13)C-substitution and deuteration lead to a negative IE. By introducing phenyl, chlorine, or alkyl side-chains into acenes, the IE becomes more remarkable, especially for hole transport. The vibrational relaxation processes involving in-plane bending of ring or alkyl side-chain motions are found to be responsible for the IE.
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Affiliation(s)
- Yuqian Jiang
- 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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17
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Rajavelu K, Rajakumar P. Synthesis and photophysical, electrochemical, antibacterial, and DNA binding studies of triazinocalix[2]arenes. J Mater Chem B 2015; 3:3340-3350. [DOI: 10.1039/c4tb01848f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesized calix[2]arene[2]triazine derivatives bind effectively to DNA and exhibit efficient antibacterial activity against B. cereus, S. aureus and E. coli bacteria as supported by docking studies.
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Affiliation(s)
- Kannan Rajavelu
- Department of Organic Chemistry
- University of Madras
- Chennai 600 025
- India
| | - Perumal Rajakumar
- Department of Organic Chemistry
- University of Madras
- Chennai 600 025
- India
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18
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Xi J, Wang D, Shuai Z. Electronic properties and charge carrier mobilities of graphynes and graphdiynes from first principles. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2014. [DOI: 10.1002/wcms.1213] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jinyang Xi
- MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry; Tsinghua University; Beijing P.R. China
| | - Dong Wang
- MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry; Tsinghua University; Beijing P.R. China
| | - Zhigang Shuai
- MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry; Tsinghua University; Beijing P.R. China
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19
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Xi J, Wang D, Yi Y, Shuai Z. Electron-phonon couplings and carrier mobility in graphynes sheet calculated using the Wannier-interpolation approach. J Chem Phys 2014; 141:034704. [DOI: 10.1063/1.4887538] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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20
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Jiang Y, Geng H, Shi W, Peng Q, Zheng X, Shuai Z. Theoretical Prediction of Isotope Effects on Charge Transport in Organic Semiconductors. J Phys Chem Lett 2014; 5:2267-2273. [PMID: 26279545 DOI: 10.1021/jz500825q] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We suggest that the nuclear tunneling effect is important in organic semiconductors, which we showed is absent in both the widely employed Marcus theory and the band-like transport as described by the deformation potential theory. Because the quantum nuclear tunneling tends to favor electron transfer while heavier nuclei decrease the quantum effect, there should occur an isotope effect for carrier mobility. For N,N'-n-bis(n-hexyl)-naphthalene diimide, electron mobility of all-deuteration on alkyls and all (13)C-substitution on the backbone decrease ∼18 and 7%, respectively. Similar isotope effects are found in the N,N'-n-bis(n-octyl)-perylene diimide. However, there is nearly no isotope effect for all-deuterated rubrene or tetracene. We have found that the isotopic effect only occurs when the substituted nuclei contribute actively to vibrations with appreciable charge reorganization energy and coupling with carrier motion. Thus, this prediction can shed light on the current dispute over the hopping versus band-like mechanisms in organic semiconductors.
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Affiliation(s)
- Yuqian Jiang
- †MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Hua Geng
- ‡Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Wen Shi
- †MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Qian Peng
- ‡Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Xiaoyan Zheng
- †MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, 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
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21
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Xiao J, Long M, Li X, Xu H, Huang H, Gao Y. Theoretical prediction of electronic structure and carrier mobility in single-walled MoS₂ nanotubes. Sci Rep 2014; 4:4327. [PMID: 24608863 PMCID: PMC3948089 DOI: 10.1038/srep04327] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 02/21/2014] [Indexed: 11/09/2022] Open
Abstract
We have investigated the electronic structure and carrier mobility of armchair and zigzag single-walled MoS₂ nanotubes using density functional theory combined with Boltzmann transport method with relaxation time approximation. It is shown that armchair nanotubes are indirect bandgap semiconductors, while zigzag nanotubes are direct ones. The band gaps of single-walled MoS₂ nanotubes are along with the augment of their diameters. For armchair nanotubes (5 ≤ Na ≤ 14), the hole mobility raise from 98.62 ~ 740.93 cm(2)V(-1)s(-1) at room temperature, which is about six times of the electron mobility. For zigzag nanotubes (9 ≤ Na ≤ 15), the hole mobility is 56.61 ~ 91.32 cm(2)V(-1)s(-1) at room temperature, which is about half of the electron mobility.
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Affiliation(s)
- Jin Xiao
- Institute of Super-microstructure and Ultrafast Process in Advanced Materials (ISUPAM), School of Physics and Electronics, Central South University, Changsha 410083, China
| | - Mengqiu Long
- Institute of Super-microstructure and Ultrafast Process in Advanced Materials (ISUPAM), School of Physics and Electronics, Central South University, Changsha 410083, China
| | - Xinmei Li
- Institute of Super-microstructure and Ultrafast Process in Advanced Materials (ISUPAM), School of Physics and Electronics, Central South University, Changsha 410083, China
| | - Hui Xu
- Institute of Super-microstructure and Ultrafast Process in Advanced Materials (ISUPAM), School of Physics and Electronics, Central South University, Changsha 410083, China
| | - Han Huang
- Institute of Super-microstructure and Ultrafast Process in Advanced Materials (ISUPAM), School of Physics and Electronics, Central South University, Changsha 410083, China
| | - Yongli Gao
- Institute of Super-microstructure and Ultrafast Process in Advanced Materials (ISUPAM), School of Physics and Electronics, Central South University, Changsha 410083, China
- Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627, United States
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22
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Wang L, Akimov AV, Chen L, Prezhdo OV. Quantized Hamiltonian dynamics captures the low-temperature regime of charge transport in molecular crystals. J Chem Phys 2013; 139:174109. [DOI: 10.1063/1.4828863] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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23
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Li Y, Coropceanu V, Brédas JL. Nonlocal electron-phonon coupling in organic semiconductor crystals: The role of acoustic lattice vibrations. J Chem Phys 2013; 138:204713. [DOI: 10.1063/1.4807886] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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24
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Chen J, Xi J, Wang D, Shuai Z. Carrier Mobility in Graphyne Should Be Even Larger than That in Graphene: A Theoretical Prediction. J Phys Chem Lett 2013; 4:1443-8. [PMID: 26282296 DOI: 10.1021/jz4005587] [Citation(s) in RCA: 140] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We show here that the carrier mobility in the novel sp-sp(2) hybridization planar 6,6,12-graphyne sheet should be even larger than that in the graphene sheet. Both graphyne and graphene exhibit a Dirac cone structure near the Fermi surface. However, due to the sp-sp(2) hybridization forming the triple bonds in graphyne, the electron-phonon scattering is reduced compared with that of graphene. The carrier mobility is calculated at the first-principles level by using the Boltzmann transport equation coupled with the deformation potential theory. The intrinsic mobility of the 6,6,12-graphyne is 4.29 × 10(5) cm(2) V(-1) s(-1) for holes and 5.41 × 10(5) cm(2) V(-1) s(-1) for electrons at room temperature, which is found to be larger than that of graphene (∼ 3 × 10(5) cm(2) V(-1) s(-1)).
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Affiliation(s)
- Jianming Chen
- †Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, 100190 Beijing, People's Republic of China
| | - Jinyang Xi
- ‡MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, 100084 Beijing, People's Republic of China
| | - Dong Wang
- ‡MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, 100084 Beijing, People's Republic of China
| | - Zhigang Shuai
- †Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, 100190 Beijing, People's Republic of China
- ‡MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, 100084 Beijing, People's Republic of China
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25
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Chen J, Wang D, Shuai Z. First-Principles Predictions of Thermoelectric Figure of Merit for Organic Materials: Deformation Potential Approximation. J Chem Theory Comput 2012; 8:3338-47. [DOI: 10.1021/ct3004436] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jianming Chen
- Key Laboratory of Organic Solids,
Beijing National Laboratory for Molecular Science (BNLMS), Institute
of Chemistry, Chinese Academy of Sciences, 100190 Beijing, P. R. China
| | - Dong Wang
- MOE Key Laboratory of Organic
OptoElectronics and Molecular Engineering, Department of Chemistry,
Tsinghua University, 100084 Beijing, P. R. China
| | - Zhigang Shuai
- Key Laboratory of Organic Solids,
Beijing National Laboratory for Molecular Science (BNLMS), Institute
of Chemistry, Chinese Academy of Sciences, 100190 Beijing, P. R. China
- MOE Key Laboratory of Organic
OptoElectronics and Molecular Engineering, Department of Chemistry,
Tsinghua University, 100084 Beijing, P. R. China
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26
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Xi J, Long M, Tang L, Wang D, Shuai Z. First-principles prediction of charge mobility in carbon and organic nanomaterials. NANOSCALE 2012; 4:4348-69. [PMID: 22695470 DOI: 10.1039/c2nr30585b] [Citation(s) in RCA: 199] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We summarize our recent progresses in developing first-principles methods for predicting the intrinsic charge mobility in carbon and organic nanomaterials, within the framework of Boltzmann transport theory and relaxation time approximation. The electron-phonon couplings are described by Bardeen and Shockley's deformation potential theory, namely delocalized electrons scattered by longitudinal acoustic phonons as modeled by uniform lattice dilation. We have applied such methodology to calculating the charge carrier mobilities of graphene and graphdiyne, both sheets and nanoribbons, as well as closely packed organic crystals. The intrinsic charge carrier mobilities for graphene sheet and naphthalene are calculated to be 3 × 10(5) and ∼60 cm(2) V(-1) s(-1) respectively at room temperature, in reasonable agreement with previous studies. We also present some new theoretical results for the recently discovered organic electronic materials, diacene-fused thienothiophenes, for which the charge carrier mobilities are predicted to be around 100 cm(2) V(-1) s(-1).
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Affiliation(s)
- Jinyang Xi
- Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
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27
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Wang D, Shi W, Chen J, Xi J, Shuai Z. Modeling thermoelectric transport in organic materials. Phys Chem Chem Phys 2012; 14:16505-20. [DOI: 10.1039/c2cp42710a] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Girlando A, Grisanti L, Masino M, Brillante A, Della Valle RG, Venuti E. Interaction of charge carriers with lattice and molecular phonons in crystalline pentacene. J Chem Phys 2011; 135:084701. [PMID: 21895208 DOI: 10.1063/1.3625293] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The computational protocol we have developed for the calculation of local (Holstein) and non-local (Peierls) carrier-phonon coupling in molecular organic semiconductors is applied to both the low temperature and high temperature bulk crystalline phases of pentacene. The electronic structure is calculated by the semimpirical INDO/S (Intermediate Neglect of Differential Overlap with Spectroscopic parametrization) method. In the phonon description, the rigid molecule approximation is removed, allowing mixing of low-frequency intra-molecular modes with inter-molecular (lattice) phonons. A clear distinction remains between the low-frequency phonons, which essentially modulate the transfer integral from a molecule to another (Peierls coupling), and the high-frequency intra-molecular phonons, which modulate the on-site energy (Holstein coupling). The results of calculation agree well with the values extracted from experiment. The comparison with similar calculations made for rubrene allows us to discuss the implications for the current models of mobility.
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Affiliation(s)
- Alberto Girlando
- Department of Chimica Generale ed Inorganica, Chimica Analitica e Chimica Fisica and INSTM-UdR Parma, Parma University, Parco Area delle Scienze 17/a, I-43124 Parma, Italy.
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29
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Long M, Tang L, Wang D, Li Y, Shuai Z. Electronic structure and carrier mobility in graphdiyne sheet and nanoribbons: theoretical predictions. ACS NANO 2011; 5:2593-600. [PMID: 21443198 DOI: 10.1021/nn102472s] [Citation(s) in RCA: 343] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Using density functional theory coupled with Boltzmann transport equation with relaxation time approximation, we investigate the electronic structure and predict the charge mobility for a new carbon allotrope, the graphdiyne for both the sheet and nanoribbons. It is shown that the graphdiyne sheet is a semiconductor with a band gap of 0.46 eV. The calculated in-plane intrinsic electron mobility can reach the order of 10(5) cm(2)/(V s) at room temperature, while the hole mobility is about an order of magnitude lower.
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Affiliation(s)
- Mengqiu Long
- Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
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30
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Shuai Z, Wang L, Li Q. Evaluation of charge mobility in organic materials: from localized to delocalized descriptions at a first-principles level. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:1145-53. [PMID: 21181768 DOI: 10.1002/adma.201003503] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The carrier mobility for carbon electronic materials is an important parameter for optoelectronics. We report here some recently developed theoretical tools to predict the mobility without any free parameters. Carrier scatterings with phonons and traps are the key factors in evaluating the mobility. We consider three major scattering regimes: i) where the molecular internal vibration severely induces charge self-trapping and, thus, the hopping mechanism dominates; ii) where both intermolecular and intramolecular scatterings come to play roles, so the Holstein-Peierls polaron model is applied; and, iii) where charge is well delocalized with coherence length comparable with acoustic phonon wavelength, so that a deformation potential approach is more appropriate. We develop computational methods at the first-principles level for the three different cases that have extensive potential application in rationalizing material design.
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Affiliation(s)
- Zhigang Shuai
- Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, 100084 Beijin, P. R. China.
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31
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Chen Y, Wang DX, Huang ZT, Wang MX. Synthesis, Structure, and Functionalization of Homo Heterocalix[2]arene[2]triazines: Versatile Conformation and Cavity Structures Regulated by the Bridging Elements. J Org Chem 2010; 75:3786-96. [PMID: 20443614 DOI: 10.1021/jo100571c] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yin Chen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - De-Xian Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhi-Tang Huang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Mei-Xiang Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- The Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China
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