Large scale growth of vertically standing MoS2 flakes on 2D nanosheet using organic promoter. (8th March 2017)

• Record Type: Journal Article
• Authors: Kang, Min-A; Kim, Seong K; Han, Jin Kyu; Kim, Seong Jun; Chang, Sung-Jin; Park, Chong-Yun; Myung, Sung; Song, Wooseok; Lee, Sun Sook; Lim, Jongsun; An, Ki-Seok
• Is Part Of: 2D materials. Volume 4:Number 2(2017)
• Publication Date: 2017-03-08
• Subjects: molybdenum disulfide -- seeding promoter -- vertical MoS2 growth -- 2D layer -- hydrogen evolution reaction; Graphene -- Periodicals; Materials science -- Periodicals; Nanostructured materials -- Periodicals; 620.115
• DOI: 10.1088/2053-1583/aa6049
• Languages: English
• ISSNs: 2053-1583

Abstract

Abstract: A facile method was developed for chemical vapor deposition (CVD) growth of large-scale vertically oriented molybdenum disulfide nanoflakes on a basal MoS2 thin film ( v -MoS2 on MoS2 -TF) utilizing a porphyrin-type organic promoter layer, which catalyzed the synthesis and allowed large scale growth of v- MoS2 on MoS2 -TF. Here, the growing density of the vertical MoS2 flakes was manipulated by adjusting the growth temperature and the thickness of the organic promoter layers. The v- MoS2 on MoS2 -TF is even transferrable to arbitrary flexible substrates using the wet-transfer method without inducing noticeable amount of defects. A thin-film transistor was fabricated to determine the electrical property of the v- MoS2 on MoS2 -TF film. Significantly, the vertically grown MoS2 was also applicable as the catalyst for hydrogen evolution reaction, which demonstrated a decreased overpotential by 1/3 of those by horizontally grown MoS2 or other CVD-grown crystalline MoS2 thin films previously reported.