Triboelectric Series of 2D Layered Materials

Minsu Seol, Seongsu Kim, Yeonchoo Cho, Kyung Eun Byun, Haeryong Kim, Jihye Kim, Sung Kyun Kim, Sang Woo Kim, Hyeon Jin Shin, Seongjun Park

Research output: Contribution to journalArticlepeer-review

204 Citations (Scopus)

Abstract

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 MoS2, MoSe2, WS2, WSe2, 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.

Original languageEnglish
Article number1801210
JournalAdvanced Materials
Volume30
Issue number39
DOIs
Publication statusPublished - 2018 Sept 26

Bibliographical note

Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering

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