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Triboelectric Series of 2D Layered Materials
Author(s) -
Seol Minsu,
Kim Seongsu,
Cho Yeonchoo,
Byun KyungEun,
Kim Haeryong,
Kim Jihye,
Kim Sung Kyun,
Kim SangWoo,
Shin HyeonJin,
Park Seongjun
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201801210
Subject(s) - triboelectric effect , materials science , nanogenerator , nanometre , nanotechnology , fabrication , graphene , doping , oxide , optoelectronics , composite material , medicine , alternative medicine , pathology , piezoelectricity , metallurgy
Recently, as applications based on triboelectricity have expanded, understanding the triboelectric charging behavior of various materials has become essential. This study investigates the triboelectric charging behaviors of various 2D layered materials, including MoS 2 , MoSe 2 , WS 2 , WSe 2 , graphene, and graphene oxide in a triboelectric series using the concept of a triboelectric nanogenerator, and confirms the position of 2D materials in the triboelectric series. It is also demonstrated that the results are obviously related to the effective work functions. The charging polarity indicates the similar behavior regardless of the synthetic method and film thickness ranging from a few hundred nanometers (for chemically exfoliated and restacked films) to a few nanometers (for chemical vapor deposited films). Further, the triboelectric charging characteristics could be successfully modified via chemical doping. This study provides new insights to utilize 2D materials in triboelectric devices, allowing thin and flexible device fabrication.