Mobility and density relaxation of photogenerated charge carriers in organic materials

R. Österbacka; A. Pivrikas; G. Juška; K. Genevičius; K. Arlauskas; H. Stubb

doi:10.1016/j.cap.2004.01.013

Mobility and density relaxation of photogenerated charge carriers in organic materials

R. Österbacka^*, A. Pivrikas, G. Juška, K. Genevičius, K. Arlauskas, H. Stubb

^*Tämän työn vastaava kirjoittaja

Tutkimustuotos: Lehtiartikkeli › Artikkeli › Tieteellinen › vertaisarvioitu

80 Sitaatiot (Scopus)

Abstrakti

We have measured mobility and density relaxation of photogenerated charge carriers in regiorandom poly(3-hexylthiophene) using novel extraction current transient techniques. We show how to obtain time-dependent mobility μ and charge carrier density p using independent measurements. The results show μ∝t ^-0.42 independent on charge carrier density. The carrier density follows a bimolecular decay with the bimolecular recombination coefficient β=7.2×10^-13 cm³/s. The measured time-of-flight current follows closely the estimated time decay as j(t)∝p(t)μ(t), with deviation arising from extraction of the generated charge carriers.

Alkuperäiskieli	Englanti
Sivut	534-538
Sivumäärä	5
Julkaisu	Current Applied Physics
Vuosikerta	4
Numero	5
DOI - pysyväislinkit	https://doi.org/10.1016/j.cap.2004.01.013
Tila	Julkaistu - elok. 2004
OKM-julkaisutyyppi	A1 Julkaistu artikkeli, soviteltu

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10.1016/j.cap.2004.01.013

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@article{7191625233574b4cbaac8f90e1c63869,

title = "Mobility and density relaxation of photogenerated charge carriers in organic materials",

abstract = "We have measured mobility and density relaxation of photogenerated charge carriers in regiorandom poly(3-hexylthiophene) using novel extraction current transient techniques. We show how to obtain time-dependent mobility μ and charge carrier density p using independent measurements. The results show μ∝t -0.42 independent on charge carrier density. The carrier density follows a bimolecular decay with the bimolecular recombination coefficient β=7.2×10-13 cm3/s. The measured time-of-flight current follows closely the estimated time decay as j(t)∝p(t)μ(t), with deviation arising from extraction of the generated charge carriers.",

keywords = "Extraction current transients, Gaussian disorder, Time-of-flight, Transport",

author = "R. {\"O}sterbacka and A. Pivrikas and G. Ju{\v s}ka and K. Genevi{\v c}ius and K. Arlauskas and H. Stubb",

note = "Funding Information: We thank Planar International for the ITO substrates. Financial support for this project came from the Academy of Finland through grant no. 50575, Technology Development Centre in Finland, TEKES project MUOELE03 and Lithuanian VMSF grant no. T-10. Copyright: Copyright 2004 Elsevier B.V., All rights reserved.",

year = "2004",

month = aug,

doi = "10.1016/j.cap.2004.01.013",

language = "English",

volume = "4",

pages = "534--538",

journal = "Current Applied Physics",

issn = "1567-1739",

publisher = "Elsevier",

number = "5",

}

TY - JOUR

T1 - Mobility and density relaxation of photogenerated charge carriers in organic materials

AU - Österbacka, R.

AU - Pivrikas, A.

AU - Juška, G.

AU - Genevičius, K.

AU - Arlauskas, K.

AU - Stubb, H.

N1 - Funding Information: We thank Planar International for the ITO substrates. Financial support for this project came from the Academy of Finland through grant no. 50575, Technology Development Centre in Finland, TEKES project MUOELE03 and Lithuanian VMSF grant no. T-10. Copyright: Copyright 2004 Elsevier B.V., All rights reserved.

PY - 2004/8

Y1 - 2004/8

N2 - We have measured mobility and density relaxation of photogenerated charge carriers in regiorandom poly(3-hexylthiophene) using novel extraction current transient techniques. We show how to obtain time-dependent mobility μ and charge carrier density p using independent measurements. The results show μ∝t -0.42 independent on charge carrier density. The carrier density follows a bimolecular decay with the bimolecular recombination coefficient β=7.2×10-13 cm3/s. The measured time-of-flight current follows closely the estimated time decay as j(t)∝p(t)μ(t), with deviation arising from extraction of the generated charge carriers.

AB - We have measured mobility and density relaxation of photogenerated charge carriers in regiorandom poly(3-hexylthiophene) using novel extraction current transient techniques. We show how to obtain time-dependent mobility μ and charge carrier density p using independent measurements. The results show μ∝t -0.42 independent on charge carrier density. The carrier density follows a bimolecular decay with the bimolecular recombination coefficient β=7.2×10-13 cm3/s. The measured time-of-flight current follows closely the estimated time decay as j(t)∝p(t)μ(t), with deviation arising from extraction of the generated charge carriers.

KW - Extraction current transients

KW - Gaussian disorder

KW - Time-of-flight

KW - Transport

UR - http://www.scopus.com/inward/record.url?scp=3242795900&partnerID=8YFLogxK

U2 - 10.1016/j.cap.2004.01.013

DO - 10.1016/j.cap.2004.01.013

M3 - Article

AN - SCOPUS:3242795900

SN - 1567-1739

VL - 4

SP - 534

EP - 538

JO - Current Applied Physics

JF - Current Applied Physics

IS - 5

ER -

Mobility and density relaxation of photogenerated charge carriers in organic materials

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