Novel photoexcitation method for light-addressable potentiometric sensor with higher spatial resolution

Yuanyuan Guo, Kosuke Seki, Ko Ichiro Miyamoto, Torsten Wagner, Michael J. Schöning, Tatsuo Yoshinobu

研究成果: Article査読

13 被引用数 (Scopus)

抄録

A novel photoexcitation method for the light-addressable potentiometric sensor (LAPS) is proposed to achieve a higher spatial resolution of chemical images. The proposed method employs a combined light source that consists of a modulated light probe, which generates the alternating photocurrent signal, and a ring of constant illumination surrounding it. The constant illumination generates a sheath of carriers with increased concentration which suppresses the spread of photocarriers by enhanced recombination. A device simulation was carried out to verify the effect of constant illumination on the spatial resolution, which demonstrated that a higher spatial resolution can be obtained.

本文言語English
論文番号067301
ジャーナルApplied Physics Express
7
6
DOI
出版ステータスPublished - 2014 6

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

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