Electrical Generation of Polarized Broadband Radiation from an On-Chip Aligned Carbon Nanotube Film

Shinichiro Matano, Hidenori Takahashi, Natsumi Komatsu, Yui Shimura, Kenta Nakagawa, Junichiro Kono, Hideyuki Maki*

*この研究の対応する著者

研究成果: Article査読

抄録

Microsized light sources with polarized or broadband emission can be used for a variety of applications. However, the system directly generating polarized and broad-spectrum light without using polarizers has not been established. Here, we found that a nano-device of densely packed and highly aligned carbon nanotube (CNT) films on silicon chips can emit polarized light with a broad spectrum. We observed spatial emission patterns that are dependent on the angle between the electrical bias and the CNT alignment direction, which are caused not only by the large thermal conductivity anisotropy of the film but also by finite thermal conductance in the CNT-electrode contact. Utilizing the thermal and electrical anisotropy, strongly localized emission was achieved from a narrow (∼1 μm) strip of aligned CNTs connecting edges of two displaced electrodes. This device's unique ability to directly generate polarized ultrabroadband radiation may greatly expand the range of applications of microsized light sources.

本文言語English
ページ(範囲)626-633
ページ数8
ジャーナルACS Materials Letters
4
4
DOI
出版ステータスPublished - 2022 4月 4
外部発表はい

ASJC Scopus subject areas

  • 化学工学(全般)
  • 生体医工学
  • 材料科学(全般)

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