Journal article
Organic phototransistor based on intramolecular charge transfer in a bifunctional spiro compound
Publication Details
Authors: | Saragi, T.; Pudzich, R.; Fuhrmann, T.; Salbeck, J.
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Journal: | Applied Physics Letters |
Journal acronym: | Appl. Phys. Lett.
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Abstract
We report on the fabrication of organic phototransistors based on the spiro-conjugated molecule 2,7-bis-(N,N'-diphenylamino)-2',7'-bis(biphenyl-4-yl)-9,9'-spirobifluorene. Intramolecular charge transfer leads to an increase in. charge carrier density, providing the amplification effect. The sensitivity is better than 1 A/W for ultraviolet light at 370, nm, making the device interesting for sensor applications. (C) 2004 American Institute-of Physics.