Theoretical study and simulation of light-addressable potentiometric sensors

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

研究成果: Article査読

18 被引用数 (Scopus)

抄録

The light-addressable potentiometric sensor (LAPS) is a semiconductor-based potentiometric sensor using a light probe with an ability of detecting the concentration of biochemical species in a spatially resolved manner. As an important biomedical sensor, research has been conducted to improve its performance, for instance, to realize high-speed measurement. In this work, the idea of facilitating the device-level simulation, instead of using an equivalent-circuit model, is presented for detailed analysis and optimization of the performance of the LAPS. Both carrier distribution and photocurrent response have been simulated to provide new insight into both amplitude-mode and phase-mode operations of the LAPS. Various device parameters can be examined to effectively design and optimize the LAPS structures and setups for enhanced performance. Distribution of minority carriers inside a Si-based LAPS structure under illumination with different wavelengths.

本文言語English
ページ(範囲)1467-1472
ページ数6
ジャーナルPhysica Status Solidi (A) Applications and Materials Science
211
6
DOI
出版ステータスPublished - 2014 6

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 表面および界面
  • 表面、皮膜および薄膜
  • 電子工学および電気工学
  • 材料化学

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