Light absorption and related effects in chromophore-modified Langmuir films

In previous work Langmuir multilayer films of N-(4-nitrobenzo)-2-oxa-1,3-diazole phosphatidylethanolamine have been shown to generate a dark internal potential which is increased by light energy in generating a photovoltage. In this paper we examine the change in the optical characteristics of this...

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Bibliographic Details
Published in:Thin solid films 1983-01, Vol.99 (1), p.141-147
Main Authors: Holoyda, J., Kannewurf, C.R., Kauffman, J.W.
Format: Article
Language:English
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Summary:In previous work Langmuir multilayer films of N-(4-nitrobenzo)-2-oxa-1,3-diazole phosphatidylethanolamine have been shown to generate a dark internal potential which is increased by light energy in generating a photovoltage. In this paper we examine the change in the optical characteristics of this structure by adding the dyes carotene, rhodamine B and methyl violet. A significant drop in the internal potential is found for the dye-sensitized systems, but the photoresponse is enhanced relative to the lower internal potential at 300 K. From a study of the photovoltage versus temperature it was found that the range for the maximum photoresponse occurs in the vicinity of 300 K and extends up to the structural phase transition at 347 K.
ISSN:0040-6090
1879-2731
DOI:10.1016/0040-6090(83)90374-7