Tuning strain and photoluminescence of confined Au nanoparticles by hydrogen passivation

Recently, field‐effect transistors (FETs) based on two‐dimensional (2D) Bi2Te3 nanoplates have attracted much attention due to their great potential for fabricating high‐performance electronic devices. However, the gating property measurement of the Bi2Te3 nanoplate FETs exhibits hysteretic behavior in an ambient environment, which degrades not only their electrical properties, but also their device performance. This work presents a systematical study on the origins of this hysteresis effect in 2D Bi2Te3 FETs and explores effective approaches to minimize and eliminate this hysteresis effect. The hysteresis effect in 2D Bi2Te3 nanoplate FETs can be attributed to the charge trap states caused by the water molecules adsorbed on the nanoplate surface. To minimize and eliminate this hysteresis, poly(methyl methacrylate) layer is applied to passivate the 2D Bi2Te3 FETs, which leads to almost hysteresis‐free gating property and thus improves the carrier mobility and device performance. These results indicate that the surface/interface trap states of nanostructures can significantly influence their electrical properties and thus device performance, and as a result, surface passivation is required to minimize the influence of the surface/interface trap states and achieve high device performance.

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Hysteresis Effect in Two‐Dimensional Bi₂Te₃ Nanoplate Field‐Effect Transistors

Liu

Pan

Wang

et al. 2020

Adv Elect Materials

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Facile hot spots assembly on molybdenum oxide nanosheets via in situ decoration with gold nanoparticles

Guo

Zhuang

Liu

et al. 2019

Applied Surface Science

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Light-modulated ferromagnetism of strained NiFe2O4 nanocrystals

Zhou

Yuan

et al. 2019

Ceramics International

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Tuning strain and photoluminescence of confined Au nanoparticles by hydrogen passivation

Abstract: Hydrogen passivation can be used to improve and tailor the optical properties of confined Au nanoparticles by engineering the strain and interfacial defects of the confined Au nanoparticles.

Cited by 8 publications

References 23 publications

Hysteresis Effect in Two‐Dimensional Bi₂Te₃ Nanoplate Field‐Effect Transistors

Hysteresis Effect in Two‐Dimensional Bi₂Te₃ Nanoplate Field‐Effect Transistors

Facile hot spots assembly on molybdenum oxide nanosheets via in situ decoration with gold nanoparticles

Light-modulated ferromagnetism of strained NiFe2O4 nanocrystals

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Tuning strain and photoluminescence of confined Au nanoparticles by hydrogen passivation

Abstract: Hydrogen passivation can be used to improve and tailor the optical properties of confined Au nanoparticles by engineering the strain and interfacial defects of the confined Au nanoparticles.

Cited by 8 publications

References 23 publications

Hysteresis Effect in Two‐Dimensional Bi2Te3 Nanoplate Field‐Effect Transistors

Hysteresis Effect in Two‐Dimensional Bi2Te3 Nanoplate Field‐Effect Transistors

Facile hot spots assembly on molybdenum oxide nanosheets via in situ decoration with gold nanoparticles

Light-modulated ferromagnetism of strained NiFe2O4 nanocrystals

Contact Info

Product

Resources

About

Hysteresis Effect in Two‐Dimensional Bi₂Te₃ Nanoplate Field‐Effect Transistors

Hysteresis Effect in Two‐Dimensional Bi₂Te₃ Nanoplate Field‐Effect Transistors