Charge transport in intercalated and non-intercalated polymer:fullerene blends

Mathias Nyman; Oskar Sandberg; Ronald Österbacka

doi:10.1016/j.synthmet.2015.01.010

Charge transport in intercalated and non-intercalated polymer:fullerene blends

Mathias Nyman, Oskar Sandberg, Ronald Österbacka

Physics

Tutkimustuotos: Lehtiartikkeli › Artikkeli › Tieteellinen › vertaisarvioitu

9 Sitaatiot (Scopus)

Abstrakti

We present charge transport properties of intercalated and non-intercalated PBTTT:fullerene based bulk heterojunctions measured with the photo-CELIV technique. The mobilities are seen to vary greatly with fullerene loading in intercalated systems whereas the mobility in non-intercalated blends is fairly constant. The transport activation energies and widths of the Gaussian density of states (DOS) indicates lower energetic disorder in intercalated blends. The highest room temperature mobility of 2 × 10⁻³ cm²/Vs was obtained for a blend of 1:4 weight ratio PBTTT:PCBM, which is an order of magnitude higher than the other blends studied. We attribute the high mobility to lower energetic disorder and stronger electronic coupling between the transport sites due to shorter inter-site distances in the intercalated blend.

Alkuperäiskieli	Ei tiedossa
Sivut	6–10
Julkaisu	Synthetic Metals
Vuosikerta	201
DOI - pysyväislinkit	https://doi.org/10.1016/j.synthmet.2015.01.010
Tila	Julkaistu - 2015
OKM-julkaisutyyppi	A1 Julkaistu artikkeli, soviteltu

Pääsy asiakirjaan

10.1016/j.synthmet.2015.01.010

http://www.sciencedirect.com/science/article/pii/S0379677915000120

Viittausmuodot

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title = "Charge transport in intercalated and non-intercalated polymer:fullerene blends",

abstract = "We present charge transport properties of intercalated and non-intercalated PBTTT:fullerene based bulk heterojunctions measured with the photo-CELIV technique. The mobilities are seen to vary greatly with fullerene loading in intercalated systems whereas the mobility in non-intercalated blends is fairly constant. The transport activation energies and widths of the Gaussian density of states (DOS) indicates lower energetic disorder in intercalated blends. The highest room temperature mobility of 2 × 10−3 cm2/Vs was obtained for a blend of 1:4 weight ratio PBTTT:PCBM, which is an order of magnitude higher than the other blends studied. We attribute the high mobility to lower energetic disorder and stronger electronic coupling between the transport sites due to shorter inter-site distances in the intercalated blend.",

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T1 - Charge transport in intercalated and non-intercalated polymer:fullerene blends

AU - Nyman, Mathias

AU - Sandberg, Oskar

AU - Österbacka, Ronald

N1 - fys.

PY - 2015

Y1 - 2015

N2 - We present charge transport properties of intercalated and non-intercalated PBTTT:fullerene based bulk heterojunctions measured with the photo-CELIV technique. The mobilities are seen to vary greatly with fullerene loading in intercalated systems whereas the mobility in non-intercalated blends is fairly constant. The transport activation energies and widths of the Gaussian density of states (DOS) indicates lower energetic disorder in intercalated blends. The highest room temperature mobility of 2 × 10−3 cm2/Vs was obtained for a blend of 1:4 weight ratio PBTTT:PCBM, which is an order of magnitude higher than the other blends studied. We attribute the high mobility to lower energetic disorder and stronger electronic coupling between the transport sites due to shorter inter-site distances in the intercalated blend.

AB - We present charge transport properties of intercalated and non-intercalated PBTTT:fullerene based bulk heterojunctions measured with the photo-CELIV technique. The mobilities are seen to vary greatly with fullerene loading in intercalated systems whereas the mobility in non-intercalated blends is fairly constant. The transport activation energies and widths of the Gaussian density of states (DOS) indicates lower energetic disorder in intercalated blends. The highest room temperature mobility of 2 × 10−3 cm2/Vs was obtained for a blend of 1:4 weight ratio PBTTT:PCBM, which is an order of magnitude higher than the other blends studied. We attribute the high mobility to lower energetic disorder and stronger electronic coupling between the transport sites due to shorter inter-site distances in the intercalated blend.

U2 - 10.1016/j.synthmet.2015.01.010

DO - 10.1016/j.synthmet.2015.01.010

M3 - Artikel

SN - 0379-6779

VL - 201

SP - 6

EP - 10

JO - Synthetic Metals

JF - Synthetic Metals

ER -