Detector for Ultraviolet Radiation
Original Publication Date: 1981-Dec-01
Included in the Prior Art Database: 2005-Feb-08
Polyacetylene, (CH)(x), films impregnated with triphenylsulfonium or diaryliodonium salts can be used for ultra-violet actinometry. Such films undergo predictable increases in conductivity on exposure to ultraviolet (UV) radiation in the 250-350 nm range. For a given concentration of salt in the (CH)(x) film, the increase in film conductivity is a direct and reproducible measure of the integrated exposure to ultraviolet radiation. With suitable calibration the ultra-violet exposure can thus be measured quickly and cheaply using the standard techniques for conductivity measurement. As opposed to chemical actinometry, this method is also particularly sensitive in the low exposure regime.