Photomemristors using carbon nanowall/diamond heterojunctions

Kenji Ueda*, Hideharu Itou, Hidefumi Asano

*この研究の対応する著者

研究成果: Article査読

3 被引用数 (Scopus)

抄録

This work demonstrates the in situ growth of carbon nanowalls (CNWs) on diamond semiconductors by microwave plasma-assisted chemical vapor deposition. The resulting CNW/diamond junctions behave as photomemristors having both photocontrollable multiple resistance states and nonvolatile memory functions. The resistance state (high or low resistance) can be selected by irradiation with blue or violet light in conjunction with the application of a bias voltage, giving a large resistance switching ratio of ∼10 6 . The photoinduced resistance switching behaviors are rarely observed and has only been observed in a few materials and/or heterostructures. These junctions also exhibit a photoresponsivity of ∼12 A/W, which is much larger than that obtained from photodiodes composed of other materials. These results suggest that CNW/diamond (i.e., carbon sp 2 /sp 3 ) junctions could have applications in novel photocontrollable devices, which have photosensing, memory, and switching functions.

本文言語English
ページ(範囲)626-633
ページ数8
ジャーナルJournal of Materials Research
34
4
DOI
出版ステータスPublished - 2019 2月 28
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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