Authors report the synthesis of PdSe2- xSx solid-solutions (0 ≤ x ≤ 0.86) with pentagonal layered structure and their transport properties. From structural and optical characterizations, it can be confirmed that S atoms are successfully substituted on Se-site in the parent phase of PdSe2. By analyzing the electrical and thermal transport characteristics, it reveals that the density of states effective mass as well as band gap of PdSe2- xSx can be controlled by varying x. It strongly suggests that S substitution can be an effective compositional tuning approach for engineering the electronic band structure in pentagonal layered PdSe2 system.
Bibliographical noteFunding Information:
This research was supported by the Creative Materials Discovery Program through the National Research Foundation of Korea ( NRF ) funded by the Ministry of Science, ICT, and Future Planning ( 2015M3D1A1070639 ) and Basic Science Research Program through the National Research Foundation of Korea ( NRF ) ( NRF-2019R1C1C1005254 ). It was also partly supported by the SRC program: vdWMRC Center through the National Research Foundation (NRF) of Korea funded by the Ministry of Education (Grant 2017R1A5A1014862 ). K.H. Lee was supported by the Yonsei University Research Fund of 2019-22-0038.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys