Abstract
Hybrid heterojunction cell based on thermally evaporated 5,10,15,20-tetraphenyl-21H, 23H-porphine iron (Ill) chloride (FeTPPCl) as the organic semiconductor and p-Si wafer as the inorganic semiconductor have been investigated. This device showed rectification behaviour like diode. The conduction mechanisms and the diode parameters have been studied using current-voltage (I-V) characteristics in the temperature range (298-373 K) and capacitance-voltage (C-V) characteristics at room temperature. This cell exhibited photovoltaic characteristics with a short-circuit current (I(sc)) of 2.8 mA, an open-circuit voltage (V(oc)) of 0.475 V. a fill factor FF=32%. (C) 2011 Elsevier B.V. All rights reserved.