May 22, 2015 · Here, we report systematical studies on ambient pressure chemical vapor deposition (CVD) growth of monolayer and few layer WSe 2 flakes directly on silica substrates. The WSe 2 flakes were characterized using optical microscopy, atomic force microscopy, Raman spectroscopy, and photoluminescence spectroscopy.

Feb 27, 2019 · Recently, a surprising breakthrough has been made by Gao et al. 10 in the growth of monolayer WSe 2 on Au (111) by CVD. Remarkably, they have been able to achieve ultrafast growth rates of ~8.3...

Jan 2, 2019 · In this work, we demonstrate synthetic tungsten diselenide (WSe 2) monolayers with PL QY exceeding that of exfoliated crystals by over an order of magnitude. PL QY of ~60% is obtained in monolayer films grown by CVD, which is the highest reported value to date for WSe 2 prepared by any technique.

This paper investigated the growth of WSe 2 films by atmospheric pressure chemical vapor deposition (CVD). The introduction of hydrogen in the reaction chamber helps to activate the selenization of WO 3, where large-size WSe 2 monolayer and …

Jan 1, 2025 · Only gold-assisted CVD in this confined micro-reactor allowed ultrafast growth of WSe 2, resulted in reproducible and uniform monolayer WSe 2 films in sub-centimeter sizes on both confined sapphire surfaces within just one minute.

5 days ago · The development of p-type WSe2 transistors has lagged behind n-type MoS2 because of challenges in growing high-quality, large-area WSe2 films. This study employs an alkali-assisted CVD (AACVD ...

Sep 11, 2018 · Our study demonstrates that the salt-assisted CVD technique can be applied for the controllable synthesis of 2D transition metal dichalcogenides with various structures and morphologies, paving the way for developing novel catalysts and electronic devices.

Sep 16, 2022 · In this work, we examine the influence of moisture in creating defects in the structure of the WO 3 precursor and the consequent effects of using the defective WO 3 in the growth of WSe 2 2D crystals by CVD.

Jun 23, 2015 · Direct synthesis of large domains of monolayer WSe2 and their growth mechanism studies are important steps toward applications of WSe2. Here, we report systematical studies on ambient pressure chemical vapor deposition (CVD) growth of monolayer and few layer WSe2 flakes directly on silica substrates.

May 18, 2015 · We investigated how growth parameters, with emphases on growth temperatures and durations, affect the sizes, layer numbers, and shapes of as-grown WSe2 flakes. We also demonstrated that transport properties of CVD-grown monolayer WSe2, similar to mechanically-exfoliated samples, can be tuned into either p-type or ambipolar electrical behavior ...