Light sensors based on organic phototransistors with absorption-enhancing nanoparticles

Bidragets oversatte titel: Lyssesnorer baserede på organiske fototransistorer med lysforstærkende nanopartikler

Anders Runge Walther, Jes Linnet, Ole Albrektsen, Luciana Tavares, René Lynge Eriksen, Per Baunegaard With Jensen, Søren Hassing, Arne Lützen, Andreas Osadnik, Zacarias Eduardo Fabrim, Jakob Kjelstrup-Hansen

Publikation: Konferencebidrag uden forlag/tidsskriftPosterForskningpeer review

Resumé

Organic semiconductors (OSCs) exhibit promising electronic and optical properties applicable in photo-sensing devices. Previous studies have found that thiophene-based semiconductors are suitable as the active layer in organic optoelectronic devices such as light-sensing transistors [1]. The ability to fabricate and characterize metal nanostructures allows for tuning of the optical properties of metal nanoparticles (NP). In this work we have investigated organic thin-film phototransistors (OPTs) based on the molecule 5,5’’-bis(naphth-2-yl)-2,2’:5’,2’’-terthiophene (NaT3). Using electron beam lithography (EBL) we have fabricated organic field effect transistors (OFETs) with arrays of silver NPs under the organic thin-film. Experimentally, the optical extinction of light incident on arrays of NPs has been measured by reflectance spectroscopy. The results have been compared to the predictions of Mie theory. The photoconductivity of OPTs with and without nanoparticles was characterized under white light and spectrally resolved illumination. The OPTs exhibit significant responsivity at wavelengths below 500 nm essentially coinciding with the absorption spectrum of NaT3. Recent work with reduced particle diameter and more particles shows indication of enhanced photoresponsivity by exploiting the localized surface plasmon resonance (LSPR) of the NPs.
OriginalsprogEngelsk
Publikationsdato29. sep. 2015
Antal sider1
StatusUdgivet - 29. sep. 2015
BegivenhedXIV Brazil Materials Research Society Meeting - Rio de Janeiro, Brasilien
Varighed: 27. sep. 20151. okt. 2015

Konference

KonferenceXIV Brazil Materials Research Society Meeting
LandBrasilien
ByRio de Janeiro
Periode27/09/201501/10/2015

Emneord

  • Organic phototransistors

Citer dette

Runge Walther, A., Linnet, J., Albrektsen, O., Tavares, L., Eriksen, R. L., Jensen, P. B. W., ... Kjelstrup-Hansen, J. (2015). Light sensors based on organic phototransistors with absorption-enhancing nanoparticles. Poster session præsenteret på XIV Brazil Materials Research Society Meeting, Rio de Janeiro, Brasilien.
Runge Walther, Anders ; Linnet, Jes ; Albrektsen, Ole ; Tavares, Luciana ; Eriksen, René Lynge ; Jensen, Per Baunegaard With ; Hassing, Søren ; Lützen, Arne ; Osadnik, Andreas ; Fabrim, Zacarias Eduardo ; Kjelstrup-Hansen, Jakob. / Light sensors based on organic phototransistors with absorption-enhancing nanoparticles. Poster session præsenteret på XIV Brazil Materials Research Society Meeting, Rio de Janeiro, Brasilien.1 s.
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title = "Light sensors based on organic phototransistors with absorption-enhancing nanoparticles",
abstract = "Organic semiconductors (OSCs) exhibit promising electronic and optical properties applicable in photo-sensing devices. Previous studies have found that thiophene-based semiconductors are suitable as the active layer in organic optoelectronic devices such as light-sensing transistors [1]. The ability to fabricate and characterize metal nanostructures allows for tuning of the optical properties of metal nanoparticles (NP). In this work we have investigated organic thin-film phototransistors (OPTs) based on the molecule 5,5’’-bis(naphth-2-yl)-2,2’:5’,2’’-terthiophene (NaT3). Using electron beam lithography (EBL) we have fabricated organic field effect transistors (OFETs) with arrays of silver NPs under the organic thin-film. Experimentally, the optical extinction of light incident on arrays of NPs has been measured by reflectance spectroscopy. The results have been compared to the predictions of Mie theory. The photoconductivity of OPTs with and without nanoparticles was characterized under white light and spectrally resolved illumination. The OPTs exhibit significant responsivity at wavelengths below 500 nm essentially coinciding with the absorption spectrum of NaT3. Recent work with reduced particle diameter and more particles shows indication of enhanced photoresponsivity by exploiting the localized surface plasmon resonance (LSPR) of the NPs.",
keywords = "Organic phototransistors",
author = "{Runge Walther}, Anders and Jes Linnet and Ole Albrektsen and Luciana Tavares and Eriksen, {Ren{\'e} Lynge} and Jensen, {Per Baunegaard With} and S{\o}ren Hassing and Arne L{\"u}tzen and Andreas Osadnik and Fabrim, {Zacarias Eduardo} and Jakob Kjelstrup-Hansen",
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note = "XIV Brazil Materials Research Society Meeting, MRS ; Conference date: 27-09-2015 Through 01-10-2015",

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Runge Walther, A, Linnet, J, Albrektsen, O, Tavares, L, Eriksen, RL, Jensen, PBW, Hassing, S, Lützen, A, Osadnik, A, Fabrim, ZE & Kjelstrup-Hansen, J 2015, 'Light sensors based on organic phototransistors with absorption-enhancing nanoparticles', XIV Brazil Materials Research Society Meeting, Rio de Janeiro, Brasilien, 27/09/2015 - 01/10/2015.

Light sensors based on organic phototransistors with absorption-enhancing nanoparticles. / Runge Walther, Anders; Linnet, Jes; Albrektsen, Ole; Tavares, Luciana ; Eriksen, René Lynge; Jensen, Per Baunegaard With; Hassing, Søren; Lützen, Arne ; Osadnik, Andreas; Fabrim, Zacarias Eduardo; Kjelstrup-Hansen, Jakob.

2015. Poster session præsenteret på XIV Brazil Materials Research Society Meeting, Rio de Janeiro, Brasilien.

Publikation: Konferencebidrag uden forlag/tidsskriftPosterForskningpeer review

TY - CONF

T1 - Light sensors based on organic phototransistors with absorption-enhancing nanoparticles

AU - Runge Walther, Anders

AU - Linnet, Jes

AU - Albrektsen, Ole

AU - Tavares, Luciana

AU - Eriksen, René Lynge

AU - Jensen, Per Baunegaard With

AU - Hassing, Søren

AU - Lützen, Arne

AU - Osadnik, Andreas

AU - Fabrim, Zacarias Eduardo

AU - Kjelstrup-Hansen, Jakob

PY - 2015/9/29

Y1 - 2015/9/29

N2 - Organic semiconductors (OSCs) exhibit promising electronic and optical properties applicable in photo-sensing devices. Previous studies have found that thiophene-based semiconductors are suitable as the active layer in organic optoelectronic devices such as light-sensing transistors [1]. The ability to fabricate and characterize metal nanostructures allows for tuning of the optical properties of metal nanoparticles (NP). In this work we have investigated organic thin-film phototransistors (OPTs) based on the molecule 5,5’’-bis(naphth-2-yl)-2,2’:5’,2’’-terthiophene (NaT3). Using electron beam lithography (EBL) we have fabricated organic field effect transistors (OFETs) with arrays of silver NPs under the organic thin-film. Experimentally, the optical extinction of light incident on arrays of NPs has been measured by reflectance spectroscopy. The results have been compared to the predictions of Mie theory. The photoconductivity of OPTs with and without nanoparticles was characterized under white light and spectrally resolved illumination. The OPTs exhibit significant responsivity at wavelengths below 500 nm essentially coinciding with the absorption spectrum of NaT3. Recent work with reduced particle diameter and more particles shows indication of enhanced photoresponsivity by exploiting the localized surface plasmon resonance (LSPR) of the NPs.

AB - Organic semiconductors (OSCs) exhibit promising electronic and optical properties applicable in photo-sensing devices. Previous studies have found that thiophene-based semiconductors are suitable as the active layer in organic optoelectronic devices such as light-sensing transistors [1]. The ability to fabricate and characterize metal nanostructures allows for tuning of the optical properties of metal nanoparticles (NP). In this work we have investigated organic thin-film phototransistors (OPTs) based on the molecule 5,5’’-bis(naphth-2-yl)-2,2’:5’,2’’-terthiophene (NaT3). Using electron beam lithography (EBL) we have fabricated organic field effect transistors (OFETs) with arrays of silver NPs under the organic thin-film. Experimentally, the optical extinction of light incident on arrays of NPs has been measured by reflectance spectroscopy. The results have been compared to the predictions of Mie theory. The photoconductivity of OPTs with and without nanoparticles was characterized under white light and spectrally resolved illumination. The OPTs exhibit significant responsivity at wavelengths below 500 nm essentially coinciding with the absorption spectrum of NaT3. Recent work with reduced particle diameter and more particles shows indication of enhanced photoresponsivity by exploiting the localized surface plasmon resonance (LSPR) of the NPs.

KW - Organic phototransistors

M3 - Poster

ER -

Runge Walther A, Linnet J, Albrektsen O, Tavares L, Eriksen RL, Jensen PBW et al. Light sensors based on organic phototransistors with absorption-enhancing nanoparticles. 2015. Poster session præsenteret på XIV Brazil Materials Research Society Meeting, Rio de Janeiro, Brasilien.