| Title | Robust growth of two-dimensional metal dichalcogenides and their alloys by active chalcogen monomer supply |
| Authors | Zuo, Yonggang Liu, Can Ding, Liping Qiao, Ruixi Tian, Jinpeng Liu, Chang Wang, Qinghe Xue, Guodong You, Yilong Guo, Quanlin Wang, Jinhuan Fu, Ying Liu, Kehai Zhou, Xu Hong, Hao Wu, Muhong Lu, Xiaobo Yang, Rong Zhang, Guangyu Yu, Dapeng Wang, Enge Bai, Xuedong Ding, Feng Liu, Kaihui |
| Affiliation | Peking Univ, Sch Phys, Frontiers Sci Ctr Nanooptoelect, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China Kunming Univ Sci & Technol, Fac Met & Energy Engn, Minist Educ, Key Lab Unconvent Met, Kunming 650093, Yunnan, Peoples R China Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China Renmin Univ China, Beijing Key Lab Optoelect Funct Mat & Micronano D, Beijing 100872, Peoples R China Inst Basic Sci, Ctr Multidimens Carbon Mat, Ulsan 44919, South Korea Peking Univ, Collaborat Innovat Ctr Quantum Matter, Int Ctr Quantum Mat, Beijing 100871, Peoples R China Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China South China Normal Univ, Sch Phys & Telecommun Engn, Guangzhou 510006, Guangdong, Peoples R China Peking Univ, Interdisciplinary Inst Light Element Quantum Mat, Beijing 100871, Peoples R China Peking Univ, Res Ctr Light Element Adv Mat, Beijing 100871, Peoples R China Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China Liaoning Univ, Sch Phys, Shenyang 110136, Liaoning, Peoples R China |
| Keywords | TOTAL-ENERGY CALCULATIONS DYNAMICS |
| Issue Date | 23-Feb-2022 |
| Publisher | NATURE COMMUNICATIONS |
| Abstract | The precise precursor supply is a precondition for controllable growth of two-dimensional (2D) transition metal dichalcogenides (TMDs). Although great efforts have been devoted to modulating the transition metal supply, few effective methods of chalcogen feeding control were developed. Here we report a strategy of using active chalcogen monomer supply to grow high-quality TMDs in a robust and controllable manner, e.g., MoS2 monolayers perform representative photoluminescent circular helicity of similar to 92% and electronic mobility of similar to 42 cm(2)V(-1)s(-1). Meanwhile, a uniform quaternary TMD alloy with three different anions, i.e., MoS2(1-x-y)Se2xTe2y, was accomplished. Our mechanism study revealed that the active chalcogen monomers can bind and diffuse freely on a TMD surface, which enables the effective nucleation, reaction, vacancy healing and alloy formation during the growth. Our work offers a degree of freedom for the controllable synthesis of 2D compounds and their alloys, benefiting the development of high-end devices with desired 2D materials. |
| URI | http://hdl.handle.net/20.500.11897/638511 |
| DOI | 10.1038/s41467-022-28628-7 |
| Indexed | SCI(E) |
| Appears in Collections: | 物理学院 人工微结构和介观物理国家重点实验室 量子材料科学中心 |
