Effect of Thin C60 Films Modification with Aminosubstituted Polycyclic Aromatic Hydrocarbons and Meso-tetraphenylporphine on Optical and Photoelectric Properties of Au/C60/Si Photodiode Structures

• Published in: Molecular Crystals and Liquid Crystals Vol. 535; no. 1; pp. 10 - 17
• Main Authors: Dmitruk, N. L., Borkovskaya, O. Yu, Naumenko, D. O., Mamontova, I. B., Berezovska, N. I., Dmitruk, I. M., Meza-Laguna, V., Basiuk, E. V.
• Format: Journal Article
• Language: English
• Published: Philadelphia Taylor & Francis Group 2011; Taylor & Francis Ltd
• Subjects: Buckminsterfullerene; Fullerene; Fullerenes; Gold; heterojunction; Molecular chains; Optical properties; photodiode structure; Photodiodes; Photoelectric effect; Photoelectric emission; photoelectric properties; Photoelectricity; Photoluminescence; Photosensitivity; Polycyclic aromatic hydrocarbons; Quantum efficiency; Thin films
• ISSN: 1542-1406; 1563-5287; 1527-1943
• DOI: 10.1080/15421406.2011.537877

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 (λ = 400-1100 nm). The optical properties (n, 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.