Chapter

Organic Semiconductors and J-Aggregated Dyes

Tadaaki Tani

in Photographic Science

Published in print August 2011 | ISBN: 9780199572953
Published online January 2012 | e-ISBN: 9780191731266 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780199572953.003.0010
Organic Semiconductors and J-Aggregated Dyes

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Structure, property, and performance of organic semiconductors are analyzed in light of those of J-aggregated dyes on AgX grains for color films, including molecular alignment in their layers, absorption spectra, electronic structure of organic layers and their interfaces with substrates, charge transfer across the above interfaces, production process, and durability of organic devices. It is noted that single-crystalline J-aggregated mono-molecular dye layers on tabular AgX grains as substrates for color films serve as organic devices with efficient light absorption, long diffusion length of excitons, and efficient dissociation of excitons for charge separation followed by rapid transport of electronic carriers in the substrates.

Keywords: organic semiconductor; J-aggregate; dye sensitization; exciton; charge separation; electron transfer; interface; electronic transport

Chapter.  11069 words.  Illustrated.

Subjects: Atomic, Molecular, and Optical Physics

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