title: Two-Dimensional Semiconductors Grown by Chemical Vapor Transport.
abstract: Developing controlled approaches for synthesizing high-quality two-dimensional (2D) semiconductors is essential for their practical applications in novel electronics. The application of chemical vapor transport (CVT), an old single-crystal growth technique, has been extended from growing 3D crystals to synthesizing 2D atomic layers by tuning the growth kinetics. Both single crystalline individual flakes and continuous films of 1 L MoS2were successfully obtained with CVT approach at low growth temperatures of 300-600 °C. The obtained 1 L MoS2exhibits high crystallinity and comparable mobility to mechanically exfoliated samples, as confirmed by both atomic resolution microscopic imaging and electrical transport measurements. Besides MoS2, this method was also used in the growth of 2D WS2, MoSe2, MoxW1-xS2alloys, and ReS2, thus opening up a new way for the controlled synthesis of various 2D semiconductors.
authors.affiliation: Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, China.
authors.forename: Dake
authors.initials: D
authors.lastname: Hu
authors.affiliation: Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, China.
authors.forename: Guanchen
authors.initials: G
authors.lastname: Xu
authors.affiliation: Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Xing
authors.affiliation: National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.
authors.forename: Xingxu
authors.initials: X
authors.lastname: Yan
authors.affiliation: Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, China.
authors.forename: Jingyi
authors.initials: J
authors.lastname: Wang
authors.affiliation: Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, China.
authors.forename: Jingying
authors.initials: J
authors.lastname: Zheng
authors.affiliation: Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, China.
authors.forename: Zhixing
authors.initials: Z
authors.lastname: Lu
authors.affiliation: National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.
authors.forename: Peng
authors.initials: P
authors.lastname: Wang
authors.affiliation: National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.|Department of Chemical Engineering and Materials Science, Department of Physics and Astronomy, University of California-Irvine, Irvine, CA, 92697, USA.
authors.forename: Xiaoqing
authors.initials: X
authors.lastname: Pan
authors.affiliation: Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, China.
authors.forename: Liying
authors.initials: L
authors.lastname: Jiao
keywords: chemical vapor transport; crystal engineering; electron microscopy; molybdenum; semiconductors