William Mey

Arrival‐time detection in drift mobility measurements using an interdigital electrode

The conventional (time‐of‐flight) technique for studying charge transport in a slab or film of photoconductive insulator monitors the average current density in the sample. An interdigital electrode can be used to monitor the current density near the surface of the sample, a more specific form of information. Illustrative results are presented for photogenerated electrons in azulene and in anthracene containing deep traps. Prospective applications are noted, particularly to the study of amorphous photoconductors.