Bilayer polymer/oxide coating for organic semiconductors

Research output: Contribution to conference without publisher/journalPosterResearch

Abstract

Organic materials have been given much attention due to their intriguing properties that can be tailored via synthetic chemistry for specific applications combined with their low price and fairly straight-forward large-scale synthesis. p6P nanofibers can emit polarized light with a highly anisotropic emission profile, can act a sub-wavelength optical waveguides, and could form the basis for a new type of miniature OLEDs. However, p6P molecules suffer reduction of luminescence intensity during photoexcitation under UV light. Such photoreaction is understood as a consequence of the interaction of the nanofibers with oxygen. Operation of devices in vacuum is a solution but the equipment necessary makes impossible the manufacturing of the devices so we propose the use of a coating for reducing bleaching. It is observed that spin-coated PMMA do not damage the morphology of the fragile nanofibers and also do not interfere with the luminescence spectrum from the p6P but it is also not effective in stopping the bleaching. On the other hand, the use of a nonreactant and stable polymer (PMMA) as a direct contact layer on top of the organic nanofibers works as a protecting layer for avoiding modifications of the p6P luminescence spectrum and SiOx as a second layer for blocking the oxygen penetration. Bilayer coating PMMA/SiOx results in a significant reduction of bleaching without affecting significantly the emission spectrum from the nanofibers as well to avoid strong degradation of the nanofibers during electrical measurements.
Original languageEnglish
Publication date12. May 2011
Publication statusPublished - 12. May 2011
EventE-MRS Spring Meeting 2011 - Nice, France
Duration: 9. May 201113. May 2011

Conference

ConferenceE-MRS Spring Meeting 2011
CountryFrance
CityNice
Period09/05/201113/05/2011

Fingerprint

Semiconducting organic compounds
Nanofibers
Oxides
Polymers
Coatings
Polymethyl Methacrylate
Bleaching
Luminescence
Oxygen
Photoexcitation
Organic light emitting diodes (OLED)
Optical waveguides
Light polarization
Ultraviolet radiation
Vacuum
Degradation
Wavelength
Molecules

Cite this

Tavares, L., Kjelstrup-Hansen, J., Rubahn, H-G., & Sturm, H. (2011). Bilayer polymer/oxide coating for organic semiconductors. Poster session presented at E-MRS Spring Meeting 2011, Nice, France.
Tavares, Luciana ; Kjelstrup-Hansen, Jakob ; Rubahn, Horst-Günter ; Sturm, Heinz. / Bilayer polymer/oxide coating for organic semiconductors. Poster session presented at E-MRS Spring Meeting 2011, Nice, France.
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abstract = "Organic materials have been given much attention due to their intriguing properties that can be tailored via synthetic chemistry for specific applications combined with their low price and fairly straight-forward large-scale synthesis. p6P nanofibers can emit polarized light with a highly anisotropic emission profile, can act a sub-wavelength optical waveguides, and could form the basis for a new type of miniature OLEDs. However, p6P molecules suffer reduction of luminescence intensity during photoexcitation under UV light. Such photoreaction is understood as a consequence of the interaction of the nanofibers with oxygen. Operation of devices in vacuum is a solution but the equipment necessary makes impossible the manufacturing of the devices so we propose the use of a coating for reducing bleaching. It is observed that spin-coated PMMA do not damage the morphology of the fragile nanofibers and also do not interfere with the luminescence spectrum from the p6P but it is also not effective in stopping the bleaching. On the other hand, the use of a nonreactant and stable polymer (PMMA) as a direct contact layer on top of the organic nanofibers works as a protecting layer for avoiding modifications of the p6P luminescence spectrum and SiOx as a second layer for blocking the oxygen penetration. Bilayer coating PMMA/SiOx results in a significant reduction of bleaching without affecting significantly the emission spectrum from the nanofibers as well to avoid strong degradation of the nanofibers during electrical measurements.",
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Tavares, L, Kjelstrup-Hansen, J, Rubahn, H-G & Sturm, H 2011, 'Bilayer polymer/oxide coating for organic semiconductors', E-MRS Spring Meeting 2011, Nice, France, 09/05/2011 - 13/05/2011.

Bilayer polymer/oxide coating for organic semiconductors. / Tavares, Luciana ; Kjelstrup-Hansen, Jakob; Rubahn, Horst-Günter; Sturm, Heinz.

2011. Poster session presented at E-MRS Spring Meeting 2011, Nice, France.

Research output: Contribution to conference without publisher/journalPosterResearch

TY - CONF

T1 - Bilayer polymer/oxide coating for organic semiconductors

AU - Tavares, Luciana

AU - Kjelstrup-Hansen, Jakob

AU - Rubahn, Horst-Günter

AU - Sturm, Heinz

PY - 2011/5/12

Y1 - 2011/5/12

N2 - Organic materials have been given much attention due to their intriguing properties that can be tailored via synthetic chemistry for specific applications combined with their low price and fairly straight-forward large-scale synthesis. p6P nanofibers can emit polarized light with a highly anisotropic emission profile, can act a sub-wavelength optical waveguides, and could form the basis for a new type of miniature OLEDs. However, p6P molecules suffer reduction of luminescence intensity during photoexcitation under UV light. Such photoreaction is understood as a consequence of the interaction of the nanofibers with oxygen. Operation of devices in vacuum is a solution but the equipment necessary makes impossible the manufacturing of the devices so we propose the use of a coating for reducing bleaching. It is observed that spin-coated PMMA do not damage the morphology of the fragile nanofibers and also do not interfere with the luminescence spectrum from the p6P but it is also not effective in stopping the bleaching. On the other hand, the use of a nonreactant and stable polymer (PMMA) as a direct contact layer on top of the organic nanofibers works as a protecting layer for avoiding modifications of the p6P luminescence spectrum and SiOx as a second layer for blocking the oxygen penetration. Bilayer coating PMMA/SiOx results in a significant reduction of bleaching without affecting significantly the emission spectrum from the nanofibers as well to avoid strong degradation of the nanofibers during electrical measurements.

AB - Organic materials have been given much attention due to their intriguing properties that can be tailored via synthetic chemistry for specific applications combined with their low price and fairly straight-forward large-scale synthesis. p6P nanofibers can emit polarized light with a highly anisotropic emission profile, can act a sub-wavelength optical waveguides, and could form the basis for a new type of miniature OLEDs. However, p6P molecules suffer reduction of luminescence intensity during photoexcitation under UV light. Such photoreaction is understood as a consequence of the interaction of the nanofibers with oxygen. Operation of devices in vacuum is a solution but the equipment necessary makes impossible the manufacturing of the devices so we propose the use of a coating for reducing bleaching. It is observed that spin-coated PMMA do not damage the morphology of the fragile nanofibers and also do not interfere with the luminescence spectrum from the p6P but it is also not effective in stopping the bleaching. On the other hand, the use of a nonreactant and stable polymer (PMMA) as a direct contact layer on top of the organic nanofibers works as a protecting layer for avoiding modifications of the p6P luminescence spectrum and SiOx as a second layer for blocking the oxygen penetration. Bilayer coating PMMA/SiOx results in a significant reduction of bleaching without affecting significantly the emission spectrum from the nanofibers as well to avoid strong degradation of the nanofibers during electrical measurements.

M3 - Poster

ER -

Tavares L, Kjelstrup-Hansen J, Rubahn H-G, Sturm H. Bilayer polymer/oxide coating for organic semiconductors. 2011. Poster session presented at E-MRS Spring Meeting 2011, Nice, France.