1
|
Hossen MF, Shendokar S, Aravamudhan S. Defects and Defect Engineering of Two-Dimensional Transition Metal Dichalcogenide (2D TMDC) Materials. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:410. [PMID: 38470741 DOI: 10.3390/nano14050410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 02/04/2024] [Accepted: 02/18/2024] [Indexed: 03/14/2024]
Abstract
As layered materials, transition metal dichalcogenides (TMDCs) are promising two-dimensional (2D) materials. Interestingly, the characteristics of these materials are transformed from bulk to monolayer. The atomically thin TMDC materials can be a good alternative to group III-V and graphene because of their emerging tunable electrical, optical, and magnetic properties. Although 2D monolayers from natural TMDC materials exhibit the purest form, they have intrinsic defects that limit their application. However, the synthesis of TMDC materials using the existing fabrication tools and techniques is also not immune to defects. Additionally, it is difficult to synthesize wafer-scale TMDC materials for a multitude of factors influencing grain growth mechanisms. While defect engineering techniques may reduce the percentage of defects, the available methods have constraints for healing defects at the desired level. Thus, this holistic review of 2D TMDC materials encapsulates the fundamental structure of TMDC materials, including different types of defects, named zero-dimensional (0D), one-dimensional (1D), and two-dimensional (2D). Moreover, the existing defect engineering methods that relate to both formation of and reduction in defects have been discussed. Finally, an attempt has been made to correlate the impact of defects and the properties of these TMDC materials.
Collapse
Affiliation(s)
- Moha Feroz Hossen
- Joint School of Nanoscience and Nanoengineering, 2907 E Gate City Blvd, Greensboro, NC 27401, USA
- Department of Nanoengineering, North Carolina Agricultural and Technical State University, Greensboro, NC 27411, USA
| | - Sachin Shendokar
- Joint School of Nanoscience and Nanoengineering, 2907 E Gate City Blvd, Greensboro, NC 27401, USA
- Department of Nanoengineering, North Carolina Agricultural and Technical State University, Greensboro, NC 27411, USA
| | - Shyam Aravamudhan
- Joint School of Nanoscience and Nanoengineering, 2907 E Gate City Blvd, Greensboro, NC 27401, USA
- Department of Nanoengineering, North Carolina Agricultural and Technical State University, Greensboro, NC 27411, USA
| |
Collapse
|
2
|
Black E, Kratzer P, Morbec JM. Interaction between pentacene molecules and monolayer transition metal dichalcogenides. Phys Chem Chem Phys 2023; 25:29444-29450. [PMID: 37721397 DOI: 10.1039/d3cp01895d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
Using first-principles calculations based on density-functional theory, we investigated the adsorption of pentacene molecules on monolayer two-dimensional transition metal dichalcogenides (TMD). We considered the four most popular TMDs, namely, MoS2, MoSe2, WS2 and WSe2, and we examined the structural and electronic properties of pentacene/TMD systems. We discuss how monolayer pentacene interacts with the TMDs, and how this interaction affects the charge transfer and work function of the heterostructure. We also analyse the type of band alignment formed in the heterostructure and how it is affected by molecule-molecule and molecule-substrate interactions. Such analysis is valuable since pentacene/TMD heterostructures are considered to be promising for application in flexible, thin and lightweight photovoltaics and photodetectors.
Collapse
Affiliation(s)
- E Black
- School of Chemical and Physical Sciences, Keele University, Keele ST5 5BG, UK.
| | - P Kratzer
- Fakultät für Physik, Universität Duisburg-Essen, Campus Duisburg, Lotharstr. 1, 47057 Duisburg, Germany
| | - J M Morbec
- School of Chemical and Physical Sciences, Keele University, Keele ST5 5BG, UK.
| |
Collapse
|
3
|
Huynh NTX, Le OK, Dung TP, Chihaia V, Son DN. Theoretical investigation of CO 2 capture in the MIL-88 series: effects of organic linker modification. RSC Adv 2023; 13:15606-15615. [PMID: 37228675 PMCID: PMC10204073 DOI: 10.1039/d3ra01588b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 05/13/2023] [Indexed: 05/27/2023] Open
Abstract
CO2 capture is a crucial strategy to mitigate global warming and protect a sustainable environment. Metal-organic frameworks with large surface area, high flexibility, and reversible adsorption and desorption of gases are good candidates for CO2 capture. Among the synthesized metal-organic frameworks, the MIL-88 series has attracted our attention due to their excellent stability. However, a systematic investigation of CO2 capture in the MIL-88 series with different organic linkers is not available. Therefore, we clarified the topic via two sections: (1) elucidate physical insights into the CO2@MIL-88 interaction by van der Waals-dispersion correction density functional theory calculations, and (2) quantitatively study the CO2 capture capacity by grand canonical Monte Carlo simulations. We found that the 1πg, 2σu/1πu, and 2σg peaks of the CO2 molecule and the C and O p orbitals of the MIL-88 series are the predominant contributors to the CO2@MIL-88 interaction. The MIL-88 series, i.e., MIL-88A, B, C, and D, has the same metal oxide node but different organic linkers: fumarate (MIL-88A), 1,4-benzene-dicarboxylate (MIL-88B), 2,6-naphthalene-dicarboxylate (MIL-88C), and 4,4'-biphenyl-dicarboxylate (MIL-88D). The results exhibited that fumarate should be the best replacement for both the gravimetric and volumetric CO2 uptakes. We also pointed out a proportional relationship between the capture capacities with electronic properties and other parameters.
Collapse
Affiliation(s)
- Nguyen Thi Xuan Huynh
- Faculty of Natural Sciences, Quy Nhon University 170 An Duong Vuong Quy Nhon City Binh Dinh Province Vietnam
| | - Ong Kim Le
- Ho Chi Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet Street, District 10 Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Linh Trung Ward Ho Chi Minh City Vietnam
| | - Tran Phuong Dung
- Vietnam National University Ho Chi Minh City Linh Trung Ward Ho Chi Minh City Vietnam
- Department of Chemistry, University of Science Ho Chi Minh City Vietnam
| | - Viorel Chihaia
- Institute of Physical Chemistry "Ilie Murgulescu" of the Romanian Academy Splaiul Independentei 202, Sector 6 060021 Bucharest Romania
| | - Do Ngoc Son
- Ho Chi Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet Street, District 10 Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Linh Trung Ward Ho Chi Minh City Vietnam
| |
Collapse
|
4
|
Yu MS, Jesudass SC, Surendran S, Kim JY, Sim U, Han MK. Synergistic Interaction of MoS 2 Nanoflakes on La 2Zr 2O 7 Nanofibers for Improving Photoelectrochemical Nitrogen Reduction. ACS APPLIED MATERIALS & INTERFACES 2022; 14:31889-31899. [PMID: 35816758 DOI: 10.1021/acsami.2c05653] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Ammonia is a suitable hydrogen carrier with each molecule accounting for up to 17.65% of hydrogen by mass. Among various potential ammonia production methods, we adopt the photoelectrochemical (PEC) technique, which uses solar energy as well as electricity to efficiently synthesize ammonia under ambient conditions. In this article, we report MoS2@La2Zr2O7 heterostructures designed by incorporating two-dimensional (2D)-MoS2 nanoflakes on La2Zr2O7 nanofibers (MoS2@LZO) as photoelectrocatalysts. The MoS2@LZO heterostructures are synthesized by a facile hydrothermal route with electrospun La2Zr2O7 nanofibers and Mo precursors. The MoS2@LZO heterostructures work synergistically to amend the drawbacks of the individual MoS2 electrocatalysts. In addition, the harmonious activity of the mixed phase of pyrochlore/defect fluorite-structured La2Zr2O7 nanofibers generates an interface that aids in increased electrocatalytic activity by enriching oxygen vacancies in the system. The MoS2@LZO electrocatalyst exhibits an enhanced Faradaic efficiency and ammonia yield of approximately 2.25% and 10.4 μg h-1 cm-2, respectively, compared to their corresponding pristine samples. Therefore, the mechanism of improving the PEC ammonia production performance by coupling oxygen-vacant sites to the 2D-semiconductor-based electrocatalysts has been achieved. This work provides a facile strategy to improve the activity of PEC catalysts by designing an efficient heterostructure interface for PEC applications.
Collapse
Affiliation(s)
- Min Seo Yu
- Department of Materials Science & Engineering, Chonnam National University, Gwangju 61186, South Korea
| | - Sebastian Cyril Jesudass
- Department of Materials Science & Engineering, Chonnam National University, Gwangju 61186, South Korea
| | - Subramani Surendran
- Hydrogen Energy Technology Laboratory, Korea Institute of Energy Technology (KENTECH), 200 Hyeoksin-ro, Naju, Jeonnam 58330, Republic of Korea
| | - Joon Young Kim
- Hydrogen Energy Technology Laboratory, Korea Institute of Energy Technology (KENTECH), 200 Hyeoksin-ro, Naju, Jeonnam 58330, Republic of Korea
- Research Institute, NEEL Sciences, INC., Gwangju 61186, South Korea
| | - Uk Sim
- Hydrogen Energy Technology Laboratory, Korea Institute of Energy Technology (KENTECH), 200 Hyeoksin-ro, Naju, Jeonnam 58330, Republic of Korea
- Research Institute, NEEL Sciences, INC., Gwangju 61186, South Korea
| | - Mi-Kyung Han
- Department of Materials Science & Engineering, Chonnam National University, Gwangju 61186, South Korea
- Research Institute, NEEL Sciences, INC., Gwangju 61186, South Korea
| |
Collapse
|
5
|
Sun R, Sun S, Liang X, Gong H, Zhang X, Li Y, Gao M, Li D, Xu G. Surface Charge Transfer Doping of MoS 2 Monolayer by Molecules with Aggregation-Induced Emission Effect. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:164. [PMID: 35010114 PMCID: PMC8746604 DOI: 10.3390/nano12010164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 12/28/2021] [Accepted: 12/31/2021] [Indexed: 01/04/2023]
Abstract
Surface charge transfer doping has attracted much attention in modulating the optical and electrical behavior of 2D transition metal dichalcogenides (TMDCs), where finding controllable and efficient dopants is crucial. Here, 1,1,2,2-tetraphenylethylene (TPE) derivative molecules with aggregation-induced emission (AIE) effect were selected as adjustable dopants. By designing nitro and methoxyl functional groups and surface coating, controlled p/n-type doping can be achieved on a chemical vapor deposition (CVD) grown monolayer, MoS2. We investigated the electron transfer behavior between these two dopants and MoS2 with fluorescence, Raman, X-ray photoelectron spectra and transient absorption spectra. 1,1,2,2-Tetrakis(4-nitrophenyl)ethane (TPE-4NO2) with a negative charge aggregation can be a donor to transfer electrons to MoS2, while 1,1,2,2-Tetrakis(4-methoxyphenyl)ethane (TPE-4OCH3) is the opposite and electron-accepting. Density functional theory calculations further explain and confirm these experimental results. This work shows a new way to select suitable dopants for TMDCs, which is beneficial for a wide range of applications in optoelectronic devices.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | - Guanchen Xu
- Key Laboratory for High Strength Lightweight Metallic Materials of Shandong Province (HM), Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China; (R.S.); (S.S.); (X.L.); (H.G.); (X.Z.); (Y.L.); (M.G.); (D.L.)
| |
Collapse
|
6
|
Le OK, Chihaia V, Hong Hoa PT, Hai PT, Son DN. Physical insights into the Au growth on the surface of a LaAlO 3/SrTiO 3 heterointerface. RSC Adv 2022; 12:24146-24155. [PMID: 36128543 PMCID: PMC9403709 DOI: 10.1039/d2ra04038g] [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: 06/30/2022] [Accepted: 08/10/2022] [Indexed: 11/21/2022] Open
Abstract
Au growth on the LAO/STO substrate generates an optical peak in the wavelength region of 600–1200 nm due to the interaction of the Au s and dz2 orbitals with the O pz orbital of the LAO film.
Collapse
Affiliation(s)
- Ong Kim Le
- Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Ho Chi Minh City, Vietnam
| | - Viorel Chihaia
- Institute of Physical Chemistry “Ilie Murgulescu” of the Romanian Academy, Splaiul Independentei 202, Sector 6, 060021 Bucharest, Romania
| | - Phan Thi Hong Hoa
- Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Ho Chi Minh City, Vietnam
| | - Pham Thanh Hai
- Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Ho Chi Minh City, Vietnam
| | - Do Ngoc Son
- Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Ho Chi Minh City, Vietnam
| |
Collapse
|
7
|
Aryeetey F, Pourianejad S, Ayanbajo O, Nowlin K, Ignatova T, Aravamudhan S. Bandgap recovery of monolayer MoS 2 using defect engineering and chemical doping. RSC Adv 2021; 11:20893-20898. [PMID: 35479368 PMCID: PMC9034023 DOI: 10.1039/d1ra02888j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/02/2021] [Indexed: 01/07/2023] Open
Abstract
Two-dimensional transition metal dichalcogenide materials have created avenues for exciting physics with unique electronic and photonic applications. Among these materials, molybdenum disulfide is the most known due to extensive research in understanding its electronic and optical properties. In this paper, we report on the successful growth and modification of monolayer MoS2 (1L MoS2) by controlling carrier concentration and manipulating bandgap in order to improve the efficiency of light emission. Atomic size MoS2 vacancies were created using a Helium Ion Microscope, then the defect sites were doped with 2,3,5,6-tetrafluro7,7,8,8-tetracyanoquinodimethane (F4TCNQ). The carrier concentration in intrinsic (as-grown) and engineered 1L MoS2 was calculated using Mass Action model. The results are in a good agreement with Raman and photoluminescence spectroscopy as well as Kelvin probe force microscopy characterizations. Two-dimensional transition metal dichalcogenide materials have created avenues for exciting physics with unique electronic and photonic applications.![]()
Collapse
Affiliation(s)
- Frederick Aryeetey
- Department of Nanoengineering, North Carolina A&T State University 2907 East Gate City Blvd Greensboro NC 27401 USA +1-336-500-0115 +1-336-285-2810
| | - Sajedeh Pourianejad
- Department of Nanoscience, University of North Carolina at Greensboro 2907 East Gate City Blvd Greensboro North Carolina 27401 USA +1-336-500-0115 +1-336-285-2820
| | - Olubukola Ayanbajo
- Department of Nanoengineering, North Carolina A&T State University 2907 East Gate City Blvd Greensboro NC 27401 USA +1-336-500-0115 +1-336-285-2810
| | - Kyle Nowlin
- Department of Nanoscience, University of North Carolina at Greensboro 2907 East Gate City Blvd Greensboro North Carolina 27401 USA +1-336-500-0115 +1-336-285-2820
| | - Tetyana Ignatova
- Department of Nanoscience, University of North Carolina at Greensboro 2907 East Gate City Blvd Greensboro North Carolina 27401 USA +1-336-500-0115 +1-336-285-2820
| | - Shyam Aravamudhan
- Department of Nanoengineering, North Carolina A&T State University 2907 East Gate City Blvd Greensboro NC 27401 USA +1-336-500-0115 +1-336-285-2810
| |
Collapse
|