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Interactions between lasers and two-dimensional transition metal dichalcogenides.

Junpeng Lu¹, Hongwei Liu², Eng Soon Tok³

¹Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore. physowch@nus.edu.sg and Center for Advanced 2D materials and Graphene Research Center, National University of Singapore, 6 Science Drive 2, Singapore 117546, Singapore.

Chemical Society Reviews

|May 4, 2016

Summary

This review explores laser interactions with two-dimensional (2D) transition metal dichalcogenides (TMDs). We cover their optoelectronic potential, light-matter interactions, and applications in devices and material modification.

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Area of Science:

Materials Science
Optoelectronics
Laser Physics

Background:

Two-dimensional (2D) layered materials, particularly group-VI transition metal dichalcogenides (TMDs) like MoS2 and WSe2, exhibit unique semiconductor properties.
Their sizable and tunable band gaps enable strong light-matter interactions, leading to diverse phenomena such as photo-excitation and photochemical reactions.
These properties position TMDs as promising candidates for next-generation optoelectronic devices.

Purpose of the Study:

To provide a comprehensive overview of phenomena arising from laser interactions with 2D TMDs.
To review characterizations of TMD optical fundamentals using laser spectroscopies.
To summarize applications in photoelectric conversion and material modification.

Main Methods:

Literature review of phenomena explained by laser-TMD interactions.
Analysis of laser spectroscopies for optical fundamental characterization.
Synthesis of findings on laser-excited photoelectric conversion and laser-modified TMD functionality.

Main Results:

Detailed examination of various photo-induced phenomena in 2D TMDs.
Review of optical characterization techniques using laser spectroscopies.
Summary of advancements in photoelectric conversion devices and material property enhancement via laser treatment.

Conclusions:

Laser interactions offer a versatile platform for understanding and manipulating 2D TMDs.
Significant potential exists for developing advanced optoelectronics and functional materials.
Future research directions include further exploration of novel phenomena and applications.