| abstract |
photoconductive cell comprises a photodetector section, which is composed of an aggregation of tetrapod-like zinc oxide whiskers (4). Each whisker consists of a core and needle-shaped crystals ex. tending in four different directions from the core. Since this novel tetrapod-like zinc oxide whisker (4) consists of single-crystal zinc oxide, it suffers less deterioration. In addition, the single-crystal material is transparent, and has a high porosity. Therefore light tends to enter deep portions of the cell so that it exhibits high sensitivity. |