Quaternary 2D Transition Metal Dichalcogenides (TMDs) with Tunable Bandgap
Abstract
Alloying/doping in 2D material is important due to wide range bandgap tunability. Increasing the number of components would increase the degree of freedom which can provide more flexibility in tuning the bandgap and also reduces the growth temperature. Here, synthesis of quaternary alloys MoxW1−xS2ySe2(1−y) is reported using chemical vapor deposition. The composition of alloys is tuned by changing the growth temperatures. As a result, the bandgap can be tuned which varies from 1.61 to 1.85 eV. The detailed theoretical calculation supports the experimental observation and shows a possibility of wide tunability of bandgap.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 14, 2017
- Source ID
- 10.1002/adma.201702457
Entities
People
- Alex Kutana
- Amey Apte
- Boris I Yakobson
- Chandra Sekhar Tiwary
- Jordan A Hachtel
- Juan Carlos Idrobo
- Pulickel Ajayan
- Robert Vajtai
- Sandhya Susarla
- Vidya Kochat
Organizations
- Air Force Office of Scientific Research
- Defense Advanced Research Projects Agency
- Oak Ridge National Laboratory
- Rice University