Thermal Laser-Assisted Manufacturing of Two-Dimensional Atomic Layer Heterostructures

Yingtao Wang, Xian Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

A unique and novel concept about laser printing technology by incorporating a preformed cartridge was proposed to fabricate two-dimensional (2D) heterostructure photoelectric devices. COMSOL multiphysics software was used to perform a simulation to study the factors influencing laser printing performance by constructing a 3D physical model, including material thickness, laser power and spot size. The thinner material thickness can ensure the same temperature distribution on the upper and lower surfaces of PPC, which is conducive to the consistent melting performance. The laser power mainly affects the temperature intensity. The laser power needs to be finely adjusted because even if the laser power differs by 0.5 mW, the temperature can differ by close to 5 °C. The laser spot size has a great influence on the temperature resolution, with the resolution of 100 and 200 nm differing by about 1 time. Under optimal conditions, a resolution of 48 nm can be obtained, which is only nearly 50% of the laser spot size. It is also feasible to obtain 2D materials of other sizes by modifying the parameters to achieve a flexible and controllable preparation scheme. In addition, it is achievable to accomplish a multilayer printing process of 2D materials that do not affect each other, thereby realizing the free combination of heterostructures. The simulation results provide a foundation for technology optimization of subsequent process realization.

Original languageEnglish
Title of host publicationTMS 2021 150th Annual Meeting and Exhibition Supplemental Proceedings
Pages25-34
Number of pages10
DOIs
StatePublished - 2021
Event150th Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2021 - Pittsburgh, United States
Duration: 15 Mar 202118 Mar 2021

Publication series

NameMinerals, Metals and Materials Series
Volume5
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

Conference150th Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2021
Country/TerritoryUnited States
CityPittsburgh
Period15/03/2118/03/21

Keywords

  • Heterostructures
  • Printing
  • Simulation
  • Two-dimensional materials

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