Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session Z41: Defects in Low-dimensional Materials
11:30 AM–2:18 PM,
Friday, March 10, 2023
Room: Room 319
Sponsoring
Unit:
DMP
Chair: Shuang Tang, SUNY Polytechnic Institute
Abstract: Z41.00010 : p-type degenerate doping of 2H-MoTe2
1:18 PM–1:30 PM
Presenter:
Anjaly Rajendran
(Columbia University)
Authors:
Anjaly Rajendran
(Columbia University)
Hae Yeon Lee
(Columbia university)
Luke N Holtzman
(Columbia University)
Song Liu
(Columbia University)
Katayun Barmak
(Columbia Univ)
James C Hone
(Columbia University)
Here, in this work, we show a p-type degenerate doping of 2H-MoTe2 using a monolayer of Tungsten Oxyselenide (TOS) – an amorphous, stable and high work-function oxide obtained by oxidation of WSe2. We characterize the doping in MoTe2 using Raman and electrical characterization that shows degenerate doping of MoTe2 using TOS while simultaneuously acting as a passivation layer. We show work-function dependent charge-transfer simulations that indicate > 1013 cm-2 doping density. In conclusion, we demonstrate a degenerate p-type doping technique to dope 2H-MoTe2 which can be used to fabricate p-n junction.
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