npj 2D Materials and Applications最新文献_第8页

Highly sensitive and reversible MXene-based micro quartz tuning fork gas sensors with tunable selectivity 具有可调选择性的高灵敏度和可逆的基于 MXene 的微型石英音叉气体传感器

IF 9.7 2区材料科学

npj 2D Materials and Applications Pub Date : 2024-03-06 DOI: 10.1038/s41699-024-00452-1

Wei Ding, Jingjing Yu, Francis Tsow, Laxmi Raj Jaishi, Buddhi Sagar Lamsal, Rick Kittelson, Sarwar Ahmed, Parashu Kharel, Yue Zhou, Xiaojun Xian

{"title":"Highly sensitive and reversible MXene-based micro quartz tuning fork gas sensors with tunable selectivity","authors":"Wei Ding, Jingjing Yu, Francis Tsow, Laxmi Raj Jaishi, Buddhi Sagar Lamsal, Rick Kittelson, Sarwar Ahmed, Parashu Kharel, Yue Zhou, Xiaojun Xian","doi":"10.1038/s41699-024-00452-1","DOIUrl":"10.1038/s41699-024-00452-1","url":null,"abstract":"Due to their distinctive morphology, significant surface-to-volume ratio, and metal-like electrical conductivity, MXenes have emerged as highly promising gas-sensing materials. Traditional MXene-based gas sensors predominantly rely on the electrical conductivity of MXenes for signal transduction. However, it is crucial to explore alternative signal transduction mechanisms to fully unlock the potential of MXenes in gas sensing applications. In this study, we have successfully showcased the development of a mass-transduction-based MXene gas sensor, utilizing MXenes as the adaptable receptor and MQTF as the transducer. The interaction between the gas analyte and MXenes induces a change in mass, resulting in a resonant frequency shift of the MQTF. This signal transduction mechanism eliminates the dependency on the electrical conductivity of MXenes, offering a broader range of possibilities for chemical modification of MXenes without concerns about compromising their conductivity. By engineering Ti3C2Tx surfaces, we have demonstrated high sensitivity and selectivity tuning of MXene-MQTF gas sensors for detecting CO, SO2, and NH3. This antisymmetric mass-transduction-based (low-cost, stable, sensitive, and practical tuning fork-based) MXene gas sensor demonstrated exceptional sensing performance, customizable selectivity, and high cost-effectiveness. This study paves the way for designing high-performance MXene-based chemical sensors and expands the scope of potential applications in air quality monitoring, wearable devices, the Internet of Things (IoT), and robotics.","PeriodicalId":19227,"journal":{"name":"npj 2D Materials and Applications","volume":" ","pages":"1-10"},"PeriodicalIF":9.7,"publicationDate":"2024-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41699-024-00452-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140045173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advance in additive manufacturing of 2D materials at the atomic and close-to-atomic scale 在原子和近原子尺度上推进二维材料的增材制造

IF 9.7 2区材料科学

npj 2D Materials and Applications Pub Date : 2024-03-06 DOI: 10.1038/s41699-024-00456-x

Yixin Chen, Fengzhou Fang, Nan Zhang

{"title":"Advance in additive manufacturing of 2D materials at the atomic and close-to-atomic scale","authors":"Yixin Chen, Fengzhou Fang, Nan Zhang","doi":"10.1038/s41699-024-00456-x","DOIUrl":"10.1038/s41699-024-00456-x","url":null,"abstract":"Atomic and close-to-atomic scale manufacturing (ACSM) has emerged as promising technologies in the manufacturing paradigm. Among various materials, 2D materials have garnered significant attention for ACSM due to their atomic-scale characteristics and physical properties. While chemical vapor deposition (CVD) can be employed to produce high-quality 2D materials, achieving patterning often relies on photolithography techniques, which limit scalability and introduce impurities. To address these challenges, this article serves as a review by focusing on exploring atomic-scale additive manufacturing methods for 2D materials. Several potential techniques are reviewed, including site-selective CVD, area-selective atomic layer deposition, electrodeposition, laser-assisted synthesis, print methods, and atomic layer-aligned stacking. The applications of atomic-scale additive manufacturing in various fields, such as electronics, biosensing, and nanoelectromechanical systems, are discussed. Finally, the future prospects of atomic-scale additive manufacturing for 2D materials based on existing research are delved into.","PeriodicalId":19227,"journal":{"name":"npj 2D Materials and Applications","volume":" ","pages":"1-23"},"PeriodicalIF":9.7,"publicationDate":"2024-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41699-024-00456-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140044839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exceptionally strong coupling of defect emission in hexagonal boron nitride to stacking sequences 六方氮化硼中缺陷发射与堆叠序列的超强耦合

IF 9.7 2区材料科学

npj 2D Materials and Applications Pub Date : 2024-03-02 DOI: 10.1038/s41699-024-00455-y

Song Li, Anton Pershin, Pei Li, Adam Gali

{"title":"Exceptionally strong coupling of defect emission in hexagonal boron nitride to stacking sequences","authors":"Song Li, Anton Pershin, Pei Li, Adam Gali","doi":"10.1038/s41699-024-00455-y","DOIUrl":"10.1038/s41699-024-00455-y","url":null,"abstract":"Van der Waals structures present a unique opportunity for tailoring material interfaces and integrating photonic functionalities. By precisely manipulating the twist angle and stacking sequences, it is possible to elegantly tune and functionalize the electronic and optical properties of layered van der Waals structures. Among these materials, two-dimensional hexagonal boron nitride (hBN) stands out for its remarkable optical properties and wide band gap, making it a promising host for solid state single photon emitters at room temperature. Previous investigations have demonstrated the observation of bright single photon emission in hBN across a wide range of wavelengths. In this study, we unveil an application of van der Waals technology in modulating their spectral shapes and brightness by carefully controlling the stacking sequences and polytypes. Our theoretical analysis reveals remarkably large variations in the Huang-Rhys factors–an indicator of the interaction between a defect and its surrounding lattice–reaching up to a factor of 3.3 for the same defect in different stacking sequences. We provide insights into the underlying mechanism behind these variations, shedding light on the design principles necessary to achieve rational and precise control of defect emission. This work paves the way for enhancing defect identification and facilitating the engineering of highly efficient single photon sources and qubits using van der Waals materials.","PeriodicalId":19227,"journal":{"name":"npj 2D Materials and Applications","volume":" ","pages":"1-8"},"PeriodicalIF":9.7,"publicationDate":"2024-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41699-024-00455-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140016465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Charge transfer mechanism for realization of double negative differential transconductance 实现双负差转导的电荷转移机制

IF 9.7 2区材料科学

npj 2D Materials and Applications Pub Date : 2024-02-29 DOI: 10.1038/s41699-024-00454-z

Kyu Hyun Han, Seung-Hwan Kim, Seung-Geun Kim, Jong-Hyun Kim, Sungjoo Song, Hyun-Yong Yu

{"title":"Charge transfer mechanism for realization of double negative differential transconductance","authors":"Kyu Hyun Han, Seung-Hwan Kim, Seung-Geun Kim, Jong-Hyun Kim, Sungjoo Song, Hyun-Yong Yu","doi":"10.1038/s41699-024-00454-z","DOIUrl":"10.1038/s41699-024-00454-z","url":null,"abstract":"With development of information age, multi-valued logic (MVL) technology utilizing negative differential transconductance (NDT) phenomenon has drawn attention as next-generation computing technology that can replace binary logic. However, because conventional NDT devices primarily use ternary logic, multiple-peak NDT device is required for higher-radix MVL that can process more datasets. Here, van der Waals double-peak anti-ambipolar transistor (AAT) as NDT device was developed by utilizing peak voltage (Vpeak) modulation of NDT peak. For realization of quaternary logic, Vpeak modulation technology was developed through charge transfer mechanism from channel, thereby shifting NDT peak and increasing peak-to-valley current ratio (PVCR). Furthermore, Double-peak AAT was implemented through parallel configuration of two AATs with different Vpeak values. Finally, quaternary inverter with four widely stable logic states was implemented by utilizing the developed double-peak AAT with two distinct NDT peaks and high PVCR. This double-peak AAT is expected to contribute to the development of next-generation MVL technology capable of processing datasets.","PeriodicalId":19227,"journal":{"name":"npj 2D Materials and Applications","volume":" ","pages":"1-9"},"PeriodicalIF":9.7,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41699-024-00454-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140000820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electric field tunable bandgap in twisted double trilayer graphene 扭曲双三层石墨烯中的电场可调带隙

IF 9.7 2区材料科学

npj 2D Materials and Applications Pub Date : 2024-02-27 DOI: 10.1038/s41699-024-00449-w

Mickael L. Perrin, Anooja Jayaraj, Bhaskar Ghawri, Kenji Watanabe, Takashi Taniguchi, Daniele Passerone, Michel Calame, Jian Zhang

{"title":"Electric field tunable bandgap in twisted double trilayer graphene","authors":"Mickael L. Perrin, Anooja Jayaraj, Bhaskar Ghawri, Kenji Watanabe, Takashi Taniguchi, Daniele Passerone, Michel Calame, Jian Zhang","doi":"10.1038/s41699-024-00449-w","DOIUrl":"10.1038/s41699-024-00449-w","url":null,"abstract":"Twisted van der Waals heterostructures have recently emerged as a versatile platform for engineering interaction-driven, topological phenomena with a high degree of control and tunability. Since the initial discovery of correlated phases in twisted bilayer graphene, a wide range of moiré materials have emerged with fascinating electronic properties. While the field of twistronics has rapidly evolved and now includes a range of multi-layered systems, moiré systems comprised of double trilayer graphene remain elusive. Here, we report electrical transport measurements combined with tight-binding calculations in twisted double trilayer graphene (TDTLG). We demonstrate that small-angle TDTLG (~1.7−2.0∘) exhibits an intrinsic bandgap at the charge neutrality point. Moreover, by tuning the displacement field, we observe a continuous insulator-semimetal-insulator transition at the CNP, which is also captured by tight-binding calculations. These results establish TDTLG systems as a highly tunable platform for further exploration of magneto-transport and optoelectronic properties.","PeriodicalId":19227,"journal":{"name":"npj 2D Materials and Applications","volume":" ","pages":"1-8"},"PeriodicalIF":9.7,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41699-024-00449-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139987485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Foam with direction: unraveling the anisotropic radiation shielding properties of 2D boron nitride nanoplatelet foams 有方向的泡沫：揭示二维氮化硼纳米片泡沫的各向异性辐射屏蔽特性

IF 9.7 2区材料科学

npj 2D Materials and Applications Pub Date : 2024-02-26 DOI: 10.1038/s41699-024-00451-2

Kazue Orikasa, Cheol Park, Sang-Hyon Chu, Calista Lum, Tony Thomas, Tyler Dolmetsch, Luiza Benedetti, Arvind Agarwal

{"title":"Foam with direction: unraveling the anisotropic radiation shielding properties of 2D boron nitride nanoplatelet foams","authors":"Kazue Orikasa, Cheol Park, Sang-Hyon Chu, Calista Lum, Tony Thomas, Tyler Dolmetsch, Luiza Benedetti, Arvind Agarwal","doi":"10.1038/s41699-024-00451-2","DOIUrl":"10.1038/s41699-024-00451-2","url":null,"abstract":"Neutron radiation exposure is one of the main challenges faced during space missions. There is a critical need for advanced lightweight radiation shielding materials. Two-dimensional (2D) boron nitride nanoplatelets (BNNP) are excellent candidates for polymer matrix nanofillers due to their superior neutron shielding and thermal and mechanical properties. Furthermore, the 2D material anisotropic behavior unlocks the potential for composite property tailoring. This study fabricated ultra-lightweight lamellar BNNP foams (density 0.05 g cm–3 and 97.5% porous) via freeze-drying processing. The neutron shielding effectiveness or mass absorption coefficient of the BNNP foams with walls perpendicular to the direction of the radiation source was 14.47 cm2 g–1, while that of the foam with parallel configuration was only 8.51 cm2 g–1. The orientation-dependent neutron radiation shielding properties were modeled using the Beer-Lambert law for porous composite materials. The BNNP foam in this study has the potential to benefit advanced tailorable radiation shielding technologies for future aerospace missions.","PeriodicalId":19227,"journal":{"name":"npj 2D Materials and Applications","volume":" ","pages":"1-9"},"PeriodicalIF":9.7,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41699-024-00451-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139976627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Monolayer indium selenide: an indirect bandgap material exhibits efficient brightening of dark excitons 单层硒化铟：一种间接带隙材料，可高效增亮暗激子

IF 9.7 2区材料科学

npj 2D Materials and Applications Pub Date : 2024-02-20 DOI: 10.1038/s41699-024-00450-3

Naomi Tabudlong Paylaga, Chang-Ti Chou, Chia-Chun Lin, Takashi Taniguchi, Kenji Watanabe, Raman Sankar, Yang-hao Chan, Shao-Yu Chen, Wei-Hua Wang

{"title":"Monolayer indium selenide: an indirect bandgap material exhibits efficient brightening of dark excitons","authors":"Naomi Tabudlong Paylaga, Chang-Ti Chou, Chia-Chun Lin, Takashi Taniguchi, Kenji Watanabe, Raman Sankar, Yang-hao Chan, Shao-Yu Chen, Wei-Hua Wang","doi":"10.1038/s41699-024-00450-3","DOIUrl":"10.1038/s41699-024-00450-3","url":null,"abstract":"Atomically thin indium selenide (InSe) exhibits a sombrero-like valence band, leading to distinctive excitonic behaviors. It is known that the indirect band gap of atomically thin InSe leads to a weak emission from the lowest-energy excitonic state (A peak). However, the A peak emission of monolayer (ML) InSe was observed to be either absent or very weak, rendering the nature of its excitonic states largely unknown. Intriguingly, we demonstrate that ML InSe exhibits pronounced PL emission because of the efficient brightening of the momentum-indirect dark excitons. The mechanism is attributed to acoustic phonon-assisted radiative recombination facilitated by strong exciton-acoustic phonon coupling and extended wavefunction in momentum space. Systematic analysis of layer-, power-, and temperature-dependent PL demonstrates that a carrier localization model can account for the asymmetric line shape of the lowest-energy excitonic emission for atomically thin InSe. Our work reveals that atomically thin InSe is a promising platform for manipulating the tightly bound dark excitons in two-dimensional semiconductor-based optoelectronic devices.","PeriodicalId":19227,"journal":{"name":"npj 2D Materials and Applications","volume":" ","pages":"1-9"},"PeriodicalIF":9.7,"publicationDate":"2024-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41699-024-00450-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139915801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Raman enhancement induced by exciton hybridization in molecules and 2D materials 分子和二维材料中激子杂化诱导的拉曼增强

IF 9.7 2区材料科学

npj 2D Materials and Applications Pub Date : 2024-02-14 DOI: 10.1038/s41699-024-00446-z

Hikari Kitadai, Qishuo Tan, Lu Ping, Xi Ling

{"title":"Raman enhancement induced by exciton hybridization in molecules and 2D materials","authors":"Hikari Kitadai, Qishuo Tan, Lu Ping, Xi Ling","doi":"10.1038/s41699-024-00446-z","DOIUrl":"10.1038/s41699-024-00446-z","url":null,"abstract":"Surface-enhanced Raman spectroscopy (SERS) is a powerful technique for trace-level fingerprinting. Recently, layered two-dimensional (2D) materials have gained significant interest as SERS substrates for providing stable, uniform, and reproducible Raman enhancement with the potential for trace-level detection. Yet, the development of effective 2D SERS substrates is still hindered by the lack of fundamental understanding of the coupling mechanism between target molecules and substrates. Here, we report a systematic excitation-dependent Raman spectroscopy investigation on the coupling between 2D materials such as SnS2, MoS2, WSe2, and graphene and small organic molecules like rhodamine 6G (Rh 6G). Strong coupling between SnS2 and Rh 6G is found due to their degenerate excitons through Raman excitation profiles (REP), leading to the enhancement of Rh 6G vibrational modes that are observable down to 10−13 M. Our study shows that exciton coupling in the substrate-adsorbate complex plays a vital role in the Raman enhancement effect, opening a new route for designing SERS substrates for high sensitivity.","PeriodicalId":19227,"journal":{"name":"npj 2D Materials and Applications","volume":" ","pages":"1-8"},"PeriodicalIF":9.7,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41699-024-00446-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139732419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Room temperature nonlocal detection of charge-spin interconversion in a topological insulator 拓扑绝缘体中电荷-自旋互转的室温非局域探测

IF 9.7 2区材料科学

npj 2D Materials and Applications Pub Date : 2024-02-10 DOI: 10.1038/s41699-024-00447-y

Md. Anamul Hoque, Lars Sjöström, Dmitrii Khokhriakov, Bing Zhao, Saroj Prasad Dash

{"title":"Room temperature nonlocal detection of charge-spin interconversion in a topological insulator","authors":"Md. Anamul Hoque, Lars Sjöström, Dmitrii Khokhriakov, Bing Zhao, Saroj Prasad Dash","doi":"10.1038/s41699-024-00447-y","DOIUrl":"10.1038/s41699-024-00447-y","url":null,"abstract":"Topological insulators (TIs) are emerging materials for next-generation low-power nanoelectronic and spintronic device applications. TIs possess non-trivial spin-momentum locking features in the topological surface states in addition to the spin-Hall effect (SHE), and Rashba states due to high spin-orbit coupling (SOC) properties. These phenomena are vital for observing the charge-spin conversion (CSC) processes for spin-based memory, logic and quantum technologies. Although CSC has been observed in TIs by potentiometric measurements, reliable nonlocal detection has so far been limited to cryogenic temperatures up to T = 15 K. Here, we report nonlocal detection of CSC and its inverse effect in the TI compound Bi1.5Sb0.5Te1.7Se1.3 at room temperature using a van der Waals heterostructure with a graphene spin-valve device. The lateral nonlocal device design with graphene allows observation of both spin-switch and Hanle spin precession signals for generation, injection and detection of spin currents by the TI. Detailed bias- and gate-dependent measurements in different geometries prove the robustness of the CSC effects in the TI. These findings demonstrate the possibility of using topological materials to make all-electrical room-temperature spintronic devices.","PeriodicalId":19227,"journal":{"name":"npj 2D Materials and Applications","volume":" ","pages":"1-8"},"PeriodicalIF":9.7,"publicationDate":"2024-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41699-024-00447-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139715268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Van der Waals enabled formation and integration of ultrathin high-κ dielectrics on 2D semiconductors 范德华二维半导体上超薄高κ电介质的形成与集成

IF 9.7 2区材料科学

npj 2D Materials and Applications Pub Date : 2024-02-08 DOI: 10.1038/s41699-024-00443-2

Matej Sebek, Zeng Wang, Norton Glen West, Ming Yang, Darren Chi Jin Neo, Xiaodi Su, Shijie Wang, Jisheng Pan, Nguyen Thi Kim Thanh, Jinghua Teng

{"title":"Van der Waals enabled formation and integration of ultrathin high-κ dielectrics on 2D semiconductors","authors":"Matej Sebek, Zeng Wang, Norton Glen West, Ming Yang, Darren Chi Jin Neo, Xiaodi Su, Shijie Wang, Jisheng Pan, Nguyen Thi Kim Thanh, Jinghua Teng","doi":"10.1038/s41699-024-00443-2","DOIUrl":"10.1038/s41699-024-00443-2","url":null,"abstract":"A thin dielectric layer is an important constituent element in 2D materials-based electronics and photonics. Current methods of using hexagonal boron nitride (hBN) and direct deposition of dielectric layer induce either high leakage current or unintentional doping and defect. Here we report a technique for damaging free integration of dielectric layer to form high-quality van der Waals (vdW) heterostructure. The dielectric layer is grown by atomic layer deposition (ALD) on 2D materials and then deterministically transferred on the target 2D material. The much weaker binding energy between the ALD dielectric and the 2D materials enables the growth and exfoliation of the atomically thin dielectrics, which is confirmed by the X-ray photoelectron spectroscopy analyses and the density function theory calculations. The effectiveness of the technology is proven by the Raman and photoluminescence measurement on WS2 monolayer protected by the dielectric film through harsh plasma treatment. Furthermore, a 2D materials-based MOSFET is constructed as a demonstration of the viability of the technology for electronic device applications. The method produces flat surfaces and clean interfaces and would greatly benefit electronic and photonic applications as encapsulation or high-κ gate dielectric.","PeriodicalId":19227,"journal":{"name":"npj 2D Materials and Applications","volume":" ","pages":"1-9"},"PeriodicalIF":9.7,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41699-024-00443-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139710642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0