Low-Temperature Photoluminescence Properties of the Monolayer MoS<sub>2</sub> Nanomaterals

Zhai, Yingjiao; Chen, X. L.; Li, Jinhua; Chu, Xueying; Zhang, Y.

doi:10.1080/10584587.2020.1819043

Integrated Ferroelectrics

2020

DOI: 10.1080/10584587.2020.1819043

|View full text |Cite

Low-Temperature Photoluminescence Properties of the Monolayer MoS₂ Nanomaterals

Yingjiao Zhai

X. L. Chen²,

Jinhua Li

et al.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2021

2024

Publication Types

Select...

Article3

Relationship

Self Cite0

Independent3

Authors

Journals

Cited by 3 publications

(1 citation statement)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, as the height between the Si substrate and the Mo source decreases from 25 to 20 mm, the number of layers of the synthesized MoS 2 increases, resulting in a decrease in the PL intensity and a slight redshift in the peak position. This phenomenon is attributed to the weakening of the quantum confinement effect[35]. The optical absorption spectrum of the monolayer MoS 2 synthesized at a height of 25 mm is shown in figure3(b).…”

mentioning

confidence: 99%

A modified CVD method for the synthesis of monolayer MoS₂ and photoelectric improvement by HfO₂ passivation

Bao

Xiao

et al. 2023

Nanotechnology

View full text Add to dashboard Cite

Molybdenum disulfide (MoS2) is an emerging class of new materials with a wide range of potential practical applications. However, the uncontrollability of monolayer MoS2 synthesized by traditional chemical vapor deposition method and the low responsivity of MoS2 photodetectors limit its further development in the field of photoelectric detection. To achieve controlled growth of monolayer MoS2 and construct MoS2 photodetectors with a high responsivity, we propose a novel single crystal growth strategy of high-quality MoS2 by controlling the Mo to S vapor ratio near the substrate, and deposit a layer of hafnium oxide (HfO2) on the surface of MoS2 to enhance the performance of the pristine metal-semiconductor-metal structure photodetector. At a reverse bias of 8 V, the HfO2 passivated MoS2 photodetector features an extremely high responsivity of 1201 A/W, a response time of around 0.5 s, and a detectivity of 7.7×10^11 Jones. Meanwhile, we deeply investigate the effect of the HfO2 layer on the performance of the fabricated MoS2 photodetector and propose a physical mechanism to interpret the obtained experiment results. These results might facilitate a better understanding on the performance modulation of the MoS2 photodetectors and accelerate the development of MoS2-based optoelectronic devices.

show abstract

mentioning

confidence: 99%

A modified CVD method for the synthesis of monolayer MoS₂ and photoelectric improvement by HfO₂ passivation

Bao

Xiao

et al. 2023

Nanotechnology

View full text Add to dashboard Cite

show abstract

Controllable preparation of the Au–MoS₂ nano-array composite: optical properties study and SERS application

Zhai

Yang

et al. 2021

J. Mater. Chem. C

View full text Add to dashboard Cite

show abstract

Hydrogel Capacitors Based on MoS2 Nanosheets and Applications in Glucose Monitoring

Wang,

Zhang,

Zhang

et al. 2024

Molecules

View full text Add to dashboard Cite

Non-invasive/minimally invasive continuous monitoring of blood glucose and blood glucose administration have a high impact on chronic disease management in diabetic patients, but the existing technology is yet to achieve the above two purposes at the same time. Therefore, this study proposes a microfluidic microneedle patch based on 3D printing technology and an integrated control system design for blood glucose measurement, and a drug delivery control circuit based on a 555 chip. The proposed method provides an improved preparation of a PVA-PEG-MoS2 nanosheet hydrogel, making use of its dielectric properties to fabricate a microcapacitor and then embedding it in a microfluidic chip. When MoS2 nanosheets react with interstitial liquid glucose (and during the calibration process), the permittivity of the hydrogel is changed, resulting in changes in the capacitance of the capacitor. By converting the capacitance change into the square-wave period change in the output of the 555 chip with the control circuit design accordingly, the minimally invasive continuous measurement of blood glucose and the controlled release of hypoglycemic drugs are realized. In this study, the cross-linking structure of MoS2 nanosheets in hydrogel was examined using infrared spectroscopy and scanning electron microscopy (SEM) methods. Moreover, the critical doping mass fraction of MoS2 nanosheets was determined to be 2% via the measurement of the dielectric constant. Meanwhile, the circuit design and the relationship between the pulse cycle and glucose concentration is validated. The results show that, compared with capacitors in series, the microcapacitors embedded in microfluidic channels can be connected in parallel to obtain better linearized blood glucose measurement results.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Low-Temperature Photoluminescence Properties of the Monolayer MoS₂ Nanomaterals

Cited by 3 publications

References 17 publications

A modified CVD method for the synthesis of monolayer MoS₂ and photoelectric improvement by HfO₂ passivation

A modified CVD method for the synthesis of monolayer MoS₂ and photoelectric improvement by HfO₂ passivation

Controllable preparation of the Au–MoS₂ nano-array composite: optical properties study and SERS application

Hydrogel Capacitors Based on MoS2 Nanosheets and Applications in Glucose Monitoring

Contact Info

Product

Resources

About

Low-Temperature Photoluminescence Properties of the Monolayer MoS2 Nanomaterals

Cited by 3 publications

References 17 publications

A modified CVD method for the synthesis of monolayer MoS2 and photoelectric improvement by HfO2 passivation

A modified CVD method for the synthesis of monolayer MoS2 and photoelectric improvement by HfO2 passivation

Controllable preparation of the Au–MoS2 nano-array composite: optical properties study and SERS application

Hydrogel Capacitors Based on MoS2 Nanosheets and Applications in Glucose Monitoring

Contact Info

Product

Resources

About

Low-Temperature Photoluminescence Properties of the Monolayer MoS₂ Nanomaterals

A modified CVD method for the synthesis of monolayer MoS₂ and photoelectric improvement by HfO₂ passivation

A modified CVD method for the synthesis of monolayer MoS₂ and photoelectric improvement by HfO₂ passivation

Controllable preparation of the Au–MoS₂ nano-array composite: optical properties study and SERS application