Reviewing two-dimensional (2D) transition metal di-tellurides (TMDTs): Properties, synthesis, and challenges in chemical vapour deposition techniques, and their optoelectronic applications

Rajashree Konar, Sandipan Maiti

Research output: Contribution to journalReview articlepeer-review

Abstract

Transition metal di-tellurides (TMDTs) are a fascinating class of 2D materials with numerous polytypes and properties that have recently emerged as a focal point in the electronics industry. TMDTs have found significant applications in photodetectors, light-emitting diodes, and field-effect transistors (FETs). In this review, we focus on an in-depth understanding of the crystallographic aspects of TMDTs, including various phase transitions and electronic, topological, thermoelectric, and magnetic properties. We delve into their controlled chemical vapor deposition (CVD) growth; a synthesis route that poses considerable challenges. Successful development of TMDTs requires proper nucleation and orientation through improved CVD strategies such as precursor or substrate modifications, process optimization, and bandgap engineering, which are explained here. Furthermore, this review addresses the current challenges of controlled CVD growth of 2D TMDTs and systematically categorizes the impact of defects, layer numbers, and orientation on TMDT quality. Potential perspectives are discussed that can inspire better growth parameters for future advancements. Finally, the review covers relevant examples, non-van der Waals (nvdW) solids, optoelectronics, and photodetector applications based on 2D TMDTs.

Original languageEnglish
Article number109095
JournalMaterials Science in Semiconductor Processing
Volume186
DOIs
StatePublished - Feb 2025
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2024 Elsevier Ltd

Keywords

  • 2D materials
  • Chemical vapor deposition (CVD)
  • Non-van der Waals (nvdW) solids
  • Optoelectronic devices
  • Photodetectors
  • Synthesis, crystallography
  • Transition metal di-tellurides (TMDTs)

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