@article{Chen2020, 
author = {Mingrui Chen and Anyi Zhang and Yihang Liu and Dingzhou Cui and Zhen Li and Yu-Han Chung and Sai Praneetha Mutyala and Matthew Mecklenburg and Xiao Nie and Chi Xu and Fanqi Wu and Qingzhou Liu and Chongwu Zhou},
title = {Gold-vapor-assisted chemical vapor deposition of aligned monolayer WSe2 with large domain size and fast growth rate},
year = {2020},
journal = {Nano Research},
volume = {13},
number = {10},
pages = {2625-2631},
keywords = {two-dimensional materials, chemical vapor deposition, transition metal dichalcogenides, aligned growth, tungsten diselenide (WSe2)},
url = {https://www.sciopen.com/article/10.1007/s12274-020-2893-7},
doi = {10.1007/s12274-020-2893-7},
abstract = {Orientation-controlled growth of two-dimensional (2D) transition metal dichalcogenides (TMDCs) may enable many new electronic and optical applications. However, previous studies reporting aligned growth of WSe2 usually yielded very small domain sizes. Herein, we introduced gold vapor into the chemical vapor deposition (CVD) process as a catalyst to assist the growth of WSe2 and successfully achieved highly aligned monolayer WSe2 triangular flakes grown on c-plane sapphire with large domain sizes (130 μm) and fast growth rate (4.3 μm·s-1). When the aligned WSe2 domains merged together, a continuous monolayer WSe2 was formed with good uniformity. After transferring to Si/SiO2 substrates, field effect transistors were fabricated on the continuous monolayer WSe2, and an average mobility of 12 cm2·V-1·s-1 was achieved, demonstrating the good quality of the material. This report paves the way to study the effect of catalytic metal vapor in the CVD process of TMDCs and contributes a novel approach to realize the growth of aligned TMDC flakes.}
}