ELECTRIC-CURRENT FLOW-THROUGH TETRACENE LAYER ANTHRACENE CRYSTAL JUNCTION

Theoretical and experimental analysis was carried out on electric curr ents limited by the potential barrier governing the flow of holes from the tetracene layer to the anthracene crystal. Theoretical spatial di stributions of charge carriers near the barrier were determined, as we ll as current-field dependences for the currents flowing through the i nvestigated junction in the presence and in the absence of illuminatio n. A current-field characteristic of the junction conditioned current is described by dependence of the j alpha E(0)(3) type in the presence of illumination and by the j alpha E(0)(2l+1) type in the lack of ill umination, where l is the characteristic parameter of the trap distrib ution. Experimental research of the hole currents flowing through the polycrystalline tetracene layer-anthracene monocrystal junction confir med the theoretical predictions about the current-held characteristics . A remarkably unequivocal confirmation was obtained for the current-h eld dependences in the presence of illumination.