MoS2 triboelectric nanogenerators based on depletion layers

Myeongjin Kim, Sung Hyun Kim, Myung Uk Park, Chang Jun Lee, Minju Kim, Yeonjin Yi, Kyung Hwa Yoo

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We developed MoS2 triboelectric nanogenerators (TENGs) using a large-sized monolayer MoS2 grown by chemical vapor deposition. To investigate the effect of a depletion layer formed across a Schottky or pn junction on the output performance of MoS2 TENGs, three types of TENGs having different contacts, i.e., an ohmic contact, a Schottky contact, and a pn junction, were investigated. During pressing, the TENGs with the Schottky contact and pn junction generated a higher power efficiency than that with the ohmic contact. Additionally, they exhibited self-rectified behaviors. This was ascribed to the diffusion of charges, which resulted in the formation of a depletion layer across the Schottky or pn junction. When ferroelectric polyvinylidene fluoride (PVDF) was used to transfer MoS2, the power efficiency of the TENGs with the Schottky contact or pn junction was further enhanced by the synergistic effect of the depletion layer and the ferroelectric PVDF.

Original languageEnglish
Article number104079
JournalNano Energy
Volume65
DOIs
Publication statusPublished - 2019 Nov

Fingerprint

Ohmic contacts
Ferroelectric materials
Chemical vapor deposition
Monolayers
polyvinylidene fluoride

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Electrical and Electronic Engineering

Cite this

Kim, Myeongjin ; Kim, Sung Hyun ; Park, Myung Uk ; Lee, Chang Jun ; Kim, Minju ; Yi, Yeonjin ; Yoo, Kyung Hwa. / MoS2 triboelectric nanogenerators based on depletion layers. In: Nano Energy. 2019 ; Vol. 65.
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MoS2 triboelectric nanogenerators based on depletion layers. / Kim, Myeongjin; Kim, Sung Hyun; Park, Myung Uk; Lee, Chang Jun; Kim, Minju; Yi, Yeonjin; Yoo, Kyung Hwa.

In: Nano Energy, Vol. 65, 104079, 11.2019.

Research output: Contribution to journalArticle

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