Titanium Dioxide based Electrochromic Iris - Preparation, Characterization and Application

摘要

The miniaturization of a classical iris consisting of blades which are moved towards the path of light is limited, due to the size of the actuators and the additional space needed for blade storage when the iris is completely open. To overcome these limitations we present a fast switching, non-mechanical micro iris based on electrochromic molecules, namely viologens, which are adsorbed onto a titanium dioxide nanoporous electrode. Measurements of the energy consumption, the response time and the spectral light transmission are presented. The complete fabrication route and the life time of the device are discussed in detail.