Fast and Low-Cost Synthesis of MoS2 Nanostructures on Paper Substrates for Near-Infrared Photodetectors

Abstract

Recent advances in the production and development of two-dimensional transition metal dichalcogenides (2D TMDs) allow applications of these materials, with a structure similar to that of graphene, in a series of devices as promising technologies for optoelectronic applications. In this work, molybdenum disulfide (MoS2) nanostructures were grown directly on paper substrates through a microwave-assisted hydrothermal synthesis. The synthesized samples were subjected to morphological, structural, and optical analysis, using techniques such as scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman. The variation of synthesis parameters, as temperature and synthesis time, allowed the manipulation of these nanostructures during the growth process, with alteration of the metallic (1T) and semiconductor (2H) phases. By using this synthesis method, two-dimensional MoS2 nanostructures were directly grown on paper substrates. The MoS2 nanostructures were used as the active layer, to produce low-cost near-infrared photodetectors. The set of results indicates that the interdigital MoS2 photodetector with the best characteristics (responsivity of 290 mA/W, detectivity of 1.8 × 109 Jones and external quantum efficiency of 37%) was obtained using photoactive MoS2 nanosheets synthesized at 200 °C for 120 min.

Nanocrystalline PbI2coated on a cellulose fiber frame for paper-based flexible X-ray detection

“…10 In contrast, a cellulose fiber paper (CFP), an environmentally friendly material, with high resistance, porous microstructure, a low price, and natural hygroscopicity has recently attracted growing interest as a platform for building flexible electronics, 22,23 such as radio frequency identification (RFID), 24,25 film field-effect transistors, [26][27][28] display devices, 29,30 photovoltaic devices, 31,32 batteries, 33,34 sensors, and photodetectors. 15,[35][36][37][38] The porous microstructure, interlacing fibers, and high surface roughness of the cellulose fiber provide high adhesion, allowing various materials to be coated on it. However, a paper-based flexible X-ray detector has not been explored.…”

Paper-based broadband flexible photodetectors with van der Waals materials

“…Cordeiro et al introduced near-infrared PDs by growing MoS 2 on cellulose paper using a hydrothermal technique. Their PD showed a photoresponsivity of about 200 mA/W and a response time of 3.7 s 13 . However, majority of methods used for the fabrication of paper-based PDs are time-consuming, complex, and consisting wet procedures.…”

Synthesis, Characterization, and Typical Application of Nitrogen‐Doped MoS2 Nanosheets Based on Pulsed Laser Ablation in Liquid Nitrogen

“…[ 4 ] Recently, some wet chemical methods such as hydrothermal method were used to prepare 1T and 2H MoS 2 . [ 15 ] In general, the laser thinning method increases the roughness of the MoS 2 monolayer in comparison to the target structure. [ 26 ] In the case of bottom‐up methods, CVD is currently the most reliable method to fabricate large‐scale MoS 2 which takes an adequate time to achieve a large‐scale MoS 2 deposition, [ 27 ] whereas PLD suffers from the high cost of nanomaterial synthesis owing to the use of a vacuum chamber and gas handling system.…”

“…[5] The monolayer MoS 2 contains large specific surface areas, strong visible light-absorbing ability, and extreme flexibility against the bulk MoS 2 . [6,11] Such intriguing properties make MoS 2 a perfect alternative material for numerous applications such as photocatalysts, [12,13] photodetectors, [14,15] field-effect transistors, [16] solar cells, [17] and biomedical purposes [18,19] as well as optical fiber sensors (OFS). [10,20] The latter is a well-known sensor due to high sensitivity, noise and electromagnetic interference immunity, compact size, low cost, and multiplex capability.…”