Effect of Thin C_(60) Films Modification with Aminosubstituted Polycyclic Aromatic Hydrocarbons and Meso-tetraphenylporphine on Optical and Photoelectric Properties of Au/C_(60)/Si Photodiode Structures

摘要

We present the results of comparative investigations of the effect of a direct solvent-free modification of C_(60) thin films with photosensitive molecules: aminosubstituted polycyclic aromatic hydrocarbons (1-aminopyrene, 1 -pyrenemethylamine hydrochloride, 1,5-diaminonaphthalene) and meso-tetraphenylporphine on their optical properties, photoluminescence, and photoelectric characteristics of Au/ C_(60)/Si photodiode structures (1 = 400-1100 nm). The optical properties (a, k) of the investigated C_(60) films are shown to differ slightly. The photoluminescence spectra measured at 2 K demonstrate a redistribution of the constituent bands intensities and their overall reduction for all C_(60) modifications. The greatest enhancement of the photocurrent and the photoconversion efficiency is observed for structures with C_(60) layers modified with meso-tetraphenylporphine.