Theoretical aspects of light-activated microelectrodes in redox electrolytes

Huanfeng Zhu*, Barry Miller, Daniel Alberto Scherson

*この研究の対応する著者

研究成果査読

2 被引用数 (Scopus)

抄録

The behavior of semiconductor-based, light-activated microelectrodes in redox electrolytes has been examined theoretically using commercial software to self-consistently solve the transport equations for solid-state and solution-phase species and the electrostatic potential within the semiconductor phase, subject to the appropriate boundary conditions under steady state. The light-limited currents for such spatially localized microelectrodes, observed for a high voltage bias, φbias, under normal irradiation and a strict axisymmetric geometry, were proportional to the photon flux intensity. The results of these simulations afforded strong evidence that under high φbias, holes generated by the light on an n-type semiconductor escape beyond the edge of the illuminated disk, leading to a net increase in the predicted current and thus in the effective area of the light-activated microelectrode.

本文言語English
ジャーナルElectrochemical and Solid-State Letters
13
2
DOI
出版ステータスPublished - 2010 1 21
外部発表はい

ASJC Scopus subject areas

  • 化学工学(全般)
  • 材料科学(全般)
  • 物理化学および理論化学
  • 電気化学
  • 電子工学および電気工学

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