Photoconduction in AnodicTa2O5

Abstract

Interference phenomena in films of anodic ${\mathrm{Ta}}_2$ ${\mathrm{O}}_5$ show that fundamental optical absorption occurs for $h\nu >4.6\mathrm{}$ ev. The resultant photoconduction between electrolyte and tantalum substrate shows a quantum yield near 0.5 when the field in the film is of order ${10}^7$ volts/cm.