Photogalvanic cell based on the photolysis of rubidium anions in THF

A photogalvanic cell composed of two half cells of the type Rb-THF]_I and Rb-THF, crown ether (or kryptand)]_II is reported. Photocurrents and photovoltages, recorded at low temperatures, in the order of 6 nA and 80 mV, respectively are obtained with light excitation at wavelenghts above 640 nm. The corresponding values with excitation above 320 nm, are 30 nA and 250 mV, respectively.