Open AccessSubstrate-dependent degradation of thin TMDC layers in ambient conditions
Author(s) -
Bogdan R. Borodin,
Fedor A. Benimetskiy,
P. A. Alekseev
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1695/1/012197
Subject(s) - materials science , photodegradation , substrate (aquarium) , degradation (telecommunications) , thin film , heterojunction , layer (electronics) , nanotechnology , chemical engineering , optoelectronics , photocatalysis , catalysis , computer science , chemistry , telecommunications , biochemistry , oceanography , engineering , geology
In this work, substrate-dependent degradation of thin layers of transition metal dichalcogenides (TMDC) is demonstrated. The energy barrier heights of the MoSe 2 /Au and MoSe 2 /Ni heterojunctions were studied using Kelvin probe force microscopy. The effect of the barrier height on the photodegradation process is shown. The results show that the Ni-covered substrate promotes the photodegradation process in the few-layer MoSe 2 flake. While the Au-covered substrate depresses it. The results of this work show the importance of choosing a substrate for the stability of devices based on thin MoSe 2 layers and might be useful for creating devices based on thin TMDC layers.