期刊
ADVANCED MATERIALS
卷 30, 期 39, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201801210
关键词
2D materials; chemical doping; effective work function; triboelectric nanogenerators; triboelectric series
类别
资金
- Industrial Strategic Technology Development Program [10052668]
- Technology Innovation Program [10065730]
- Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Ministry of Trade, Industry & Energy, (MOTIE, Korea) [20174030201800]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20174030201800] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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.
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