Photocurrents in simple polymer systems

Photocurrents have been detected in a wide range of simple polymer systems at irradiation wavelengths as high as 365 mμ. These photocurrents are shown to be due to phtoemission from the electrode system. Pulsed photoconductivity experiments show that at least two stages of charge transport are involved. In the first stage photoemitted electrons travel a short distance into the polymer before being trapped. This is followed by a slower process of trap‐dominated charge transport.