1T phase dominant hybrid 1T/2H@MoS2/PEDOT:PSS nanocomposites for potential charge transport applications

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Science Pub Date : 2025-09-05 DOI:10.1007/s10853-025-11379-3

Iswar P. Borgohain, Saiyad A. Ali, Sarathi Kundu, Sulochana Deb

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引用次数: 0

Abstract

Molybdenum disulfide (MoS₂)/Poly (3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT: PSS) nanocomposites have attracted a great deal of interest in the area of organic electronics and optoelectronics due to their exceptional conducting nature. In this work, we present a novel hydrothermal method for synthesis of 1T phase dominant hybrid-phase MoS₂ nanosheets and its synergic properties with PEDOT:PSS to facilitate improved charge transport with better 1T phase stability. The prepared nanocomposites are characterized by X-ray diffraction (XRD), Field Emission Scanning Electron Microscope (FESEM), Transmission Electron Microscopy (TEM), UV–visible (UV–Vis) absorption spectroscopy, Photoluminescence (PL) spectroscopy, Fourier Transform Infrared (FTIR) spectroscopy, Raman spectroscopy and X-ray Photoelectron (XPS) spectroscopy. XRD spectra of MoS₂ show peaks at 2θ values of 9.16°, 17.4°, 33.3° and 57.5° corresponding to different planes of both 1T and 2H phases. The FESEM images reveal the flower-like MoS₂ of approximate diameter ~ 670 nm consists of numerous curly nanosheets stacked together. TEM images reveal corrugated nanosheet structures with distinct lattice fringes. The UV–Vis spectra of MoS₂ shows a broad absorption in the range ~ 210–280 nm, with two other broad peaks at ~ 690 nm and ~ 1012 nm. Raman and XPS spectroscopy confirm formation of 1T-dominated mixed phase (1T/2H@MoS₂) nanosheets. Conductivity measurements using I–V graphs show enhanced conductivity for the nanocomposite up to 1.3 s/m in comparison to pristine MoS₂ and PEDOT:PSS polymer.

Graphical abstract

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1T相优势杂化1T/2H@MoS2/PEDOT:PSS纳米复合材料的潜在电荷输运应用

二硫化钼(MoS2)/聚（3,4-乙烯二氧噻吩）：聚苯乙烯磺酸盐（PEDOT: PSS）纳米复合材料由于其优异的导电性，在有机电子和光电子领域引起了人们的极大兴趣。在这项工作中，我们提出了一种新的水热方法来合成1T相优势杂化相MoS2纳米片，并与PEDOT:PSS协同性能，以促进改善电荷输运和更好的1T相稳定性。采用x射线衍射（XRD）、场发射扫描电子显微镜（FESEM）、透射电子显微镜（TEM）、紫外-可见（UV-Vis）吸收光谱、光致发光（PL）光谱、傅里叶变换红外（FTIR）光谱、拉曼光谱和x射线光电子（XPS）光谱对制备的纳米复合材料进行了表征。二硫化钼的XRD谱图显示，2θ值分别为9.16°、17.4°、33.3°和57.5°，对应于1T相和2H相的不同平面。FESEM图像显示，直径约670 nm的花状二硫化钼由许多卷曲的纳米片堆叠在一起。透射电镜图像显示波纹状纳米片结构具有明显的晶格条纹。二硫化钼的紫外可见光谱在~ 210 ~ 280 nm范围内有较宽的吸收峰，在~ 690 nm和~ 1012 nm处有两个较宽的吸收峰。拉曼光谱和XPS光谱证实了以1T为主的混合相（1T/2H@MoS2）纳米片的形成。使用I-V图进行的电导率测量显示，与原始的MoS2和PEDOT:PSS聚合物相比，纳米复合材料的电导率提高了1.3 s/m。图形抽象

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来源期刊

Journal of Materials Science 工程技术-材料科学：综合

CiteScore

7.90

自引率

4.40%

发文量

1297

审稿时长

2.4 months

期刊介绍： The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.