Label-free sensors based on perylenediimide-doped polystyrene distributed feedback lasers

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Title: Label-free sensors based on perylenediimide-doped polystyrene distributed feedback lasers
Authors: Díaz-García, María A. | Morales-Vidal, Marta | Villalvilla Soria, José Moisés | Boj Giménez, Pedro | Quintana Arévalo, José Antonio | Retolaza, Aritz | Merino, Santos
Research Group/s: Física de la Materia Condensada
Center, Department or Service: Universidad de Alicante. Departamento de Física Aplicada | Universidad de Alicante. Departamento de Óptica, Farmacología y Anatomía
Keywords: Sensors | Label-free | Organics | Lasers | Distributed feedback | Photostability
Knowledge Area: Física de la Materia Condensada | Física Aplicada | Óptica
Issue Date: 2015
Publisher: SPIE, The International Society for Optics and Photonics
Citation: María A. Díaz-García ; Marta Morales-Vidal ; José M. Villalvilla ; Pedro G. Boj ; José A. Quintana ; Aritz Retolaza ; Santos Merino; Label-free sensors based on perylenediimide-doped polystyrene distributed feedback lasers. Proc. SPIE 9568, Organic Field-Effect Transistors XIV; and Organic Sensors and Bioelectronics VIII, 956823 (August 31, 2015); doi:10.1117/12.2187021
Abstract: Distributed feedback (DFB) laser sensors with active films consisting of a highly efficient and photostable perylenediimide dye (perylene orange, PDI-O) dispersed in polysytrene (PS), used as passive matrix, are reported. PDIdoped- PS DFB lasers show an excellent operational durability under ambient conditions, superior to those of previously reported DFBs used for sensing purposes. Their bulk refractive index sensing capabilities, under exposure to liquids of different refractive index, have been determined from changes in their emission wavelength. The role of the active film thickness on both, the laser and the sensing performance, has been explored. The use of a thick active film (850 nm) allows obtaining the lowest possible threshold and highest operational lifetime for this type of device although the sensor sensitivity is lower than that achievable with a thin film (160 nm). It is also shown that the inclusion of a high refractive index TiO2 layer on top of the sensor structure allows improving the sensor sensitivity by around two times.
Sponsor: This work was supported by the Spanish Government (MINECO) and the European Community (FEDER) through grant no. MAT-2011–28167-C02. M.M-V. has been partly supported by a MINECO FPI fellowship (no. BES-2009-020747).
URI: http://hdl.handle.net/10045/60490
ISBN: 9781628417340
ISSN: 0277-786X
DOI: 10.1117/12.2187021
Language: eng
Type: info:eu-repo/semantics/article
Rights: Copyright 2015 Society of Photo-Optical Instrumentation Engineers. This paper was published in Proceedings of SPIE, vol. 9566, and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Peer Review: si
Publisher version: http://dx.doi.org/10.1117/12.2187021
Appears in Collections:INV - Física de la Materia Condensada - Artículos de Revistas
INV - GHPO - Artículos de Revistas

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