PHOTOCONVERTER BASED ON POLYHYDROXYAMINOE STER DOPED WITH MOLECULES OF A HALOGEN-CONTAINING COMPOUND

Photovoltaic characteristics of sandwich- type structures based on a p olymeric photoconductor, polyhydroxyaminoester doped with molecules of a halogen- containing compound (in particular, CBr4), were experiment ally studied. The unique property of the polymeric photoconductor chos en was that it was possible to obtain an inhomogeneous interface in th e illuminated polymer-Al junction by preliminary photolithographic tre atment of the polymer layer. This modification of the surface increase d the photovoltaic current 5 - 6-fold in the UV and visible spectral r anges, An additional ten-fold increase in the photocurrent was obtaine d if a polymer-Se heterojunction was included in the sandwich structur e in addition to creating the aforementioned surface inhomogeneity. Th is was accompanied by a weak dependence of the photovoltaic current on the incident light flux intensity. As a result, the photoconversion e fficiency of 1.1% was reached at an illumination of about 10(-4) W/m2 (at a wavelength of 3090 nm).