Sonochemical exfoliation and photodetection properties of MoS2 Nanosheets

被引：42

作者：

Bhakhar, Sanjay A. ^{[1
]}

Patel, Nashreen F. ^{[1
]}

Zankat, Chetan K. ^{[1
]}

Tannarana, Mohit ^{[1
]}

Solanki, G. K. ^{[1
]}

Patel, K. D. ^{[1
]}

Pathak, V. M. ^{[1
]}

Pataniya, Pratik ^{[1
]}

机构：

[1] Sardar Patel Univ, Dept Phys, Vallabh Vidyanagar 388120, Gujarat, India

来源：

MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2019年 / 98卷

关键词：

MoS2; Nanosheets; Sonochemical exfoliation; Excitonic resonances; Photodetection; THIN; MONOLAYER; PERFORMANCE; RESONANCES; GRAPHENE; PHASE; WSE2;

D O I：

10.1016/j.mssp.2019.03.017

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Atomically thin layers of transition metal dichalcogenides (TMDCs) have shown great promise for the applications in the field of optoelectronics. TMDCs have drawn huge attention of researchers in recent past due to their unique layer dependent properties. Here, we report the high yield synthesis of atomically thin MoS2 Nanosheets. The Nanosheets are synthesized by sono-chemical exfoliation technique. The exfoliated MoS2 have 2H-hexagonal lattice structure with P6(3)/mmc space group. The Raman spectrum shows the resonances corresponding to A(1g) and E-2g vibrational modes of 2H-MoS2. The lateral morphology of MoS2 Nanosheets is observed by transmission electron microscopy. The SAED pattern depicts the highly crystalline nature of Nanosheets. The absorption spectrum of MoS2 Nanosheets shows A and B excitonic resonances corresponding to direct inter-band transition at 1.82 eV and 2.0 eV, respectively. Moreover, the photo detector based on MoS2 Nanosheets is fabricated and studied under periodic 670 nm illumination of power intensity 3 mW/cm(2). The fast response with enhanced photo responsivity of 16.93 mA/W and specific detectivity of 5.12 x 10(8) Jones is observed. Overall, the present findings demonstrate high yield synthesis of Nanosheets with good quality to be used for photodetector.

引用

页码：13 / 18

页数：6

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