Organic semiconductor laser biosensor: design and performance discussion

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Abstract

Organic distributed feedback lasers can detect nanoscale materials and are therefore an attractive sens- ing platform for biological and medical applications. In this paper, we present a model for optimizing such laser sensors and discuss the advantages of using an organic semiconductor as the laser material in comparison to dyes in a matrix. The structure of the sensor and its operation principle are described. Bulk and surface sensing exper- imental data using oligofluorene truxene macromolecules and a conjugated polymer for the gain region is shown to correspond to modeled values and is used to assess the biosensing attributes of the sensor. A comparison between organic semiconductor and dye-doped laser sensitivity is made and analyzed theoretically. Finally, experimental and theoretical specific biosensing data is provided and methods for improving sensitivity are discussed.
Original languageEnglish
Article number1300109
Number of pages9
JournalIEEE Journal of Selected Topics in Quantum Electronics
Volume22
Issue number1
Early online date12 Aug 2015
DOIs
Publication statusPublished - 31 Jan 2016

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Keywords

  • distributed feedback devices
  • biophotonics
  • organic semiconductors

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