Two dimensional Langevin recombination in regioregular poly(3- hexylthiophene)

Gytis Juška; Kristijonas Genevičius; Nerijus Nekrašas; Gytis Sliaužys; Ronald Österbacka

doi:10.1063/1.3141513

Two dimensional Langevin recombination in regioregular poly(3- hexylthiophene)

Gytis Juška^*, Kristijonas Genevičius, Nerijus Nekrašas, Gytis Sliaužys, Ronald Österbacka

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

70 Citations (Scopus)

Abstract

In this work, it is shown that recombination in regioregular poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester (RRP3HT:PCBM) bulk-heterojunction solar cells is caused by the two dimensional (2D) Langevin recombination in the lamellar structures of RRP3HT, which are formed after annealing process. Due to 2D Langevin process, bimolecular recombination coefficient is reduced in comparison with three dimensional Langevin case, and bimolecular recombination coefficient depends on the density of charge carriers n1/2. Data obtained from the different experimental techniques (charge extraction with linearly increasing voltage, integral time of flight, double injection current transients and transient absorption spectroscopy) confirms 2D Langevin recombination in RR3PHT.

Original language	English
Article number	013303
Journal	Applied Physics Letters
Volume	95
Issue number	1
DOIs	https://doi.org/10.1063/1.3141513
Publication status	Published - 2009
MoE publication type	A1 Journal article-refereed

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10.1063/1.3141513

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title = "Two dimensional Langevin recombination in regioregular poly(3- hexylthiophene)",

abstract = "In this work, it is shown that recombination in regioregular poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester (RRP3HT:PCBM) bulk-heterojunction solar cells is caused by the two dimensional (2D) Langevin recombination in the lamellar structures of RRP3HT, which are formed after annealing process. Due to 2D Langevin process, bimolecular recombination coefficient is reduced in comparison with three dimensional Langevin case, and bimolecular recombination coefficient depends on the density of charge carriers n1/2. Data obtained from the different experimental techniques (charge extraction with linearly increasing voltage, integral time of flight, double injection current transients and transient absorption spectroscopy) confirms 2D Langevin recombination in RR3PHT.",

author = "Gytis Ju{\v s}ka and Kristijonas Genevi{\v c}ius and Nerijus Nekra{\v s}as and Gytis Sliau{\v z}ys and Ronald {\"O}sterbacka",

note = "Funding Information: We acknowledge financial support from the Lithuanian State Science and Studies Foundation through Contract No. C-19/2008, the Academy of Finland through the Project No. 118097; Dr. G. Dennler, Dr. J. H. Sm{\aa}tt, and Dr. M. Lind{\'e}n for the help with the samples preparations. Copyright: Copyright 2009 Elsevier B.V., All rights reserved.",

year = "2009",

doi = "10.1063/1.3141513",

language = "English",

volume = "95",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

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T1 - Two dimensional Langevin recombination in regioregular poly(3- hexylthiophene)

AU - Juška, Gytis

AU - Genevičius, Kristijonas

AU - Nekrašas, Nerijus

AU - Sliaužys, Gytis

AU - Österbacka, Ronald

N1 - Funding Information: We acknowledge financial support from the Lithuanian State Science and Studies Foundation through Contract No. C-19/2008, the Academy of Finland through the Project No. 118097; Dr. G. Dennler, Dr. J. H. Smått, and Dr. M. Lindén for the help with the samples preparations. Copyright: Copyright 2009 Elsevier B.V., All rights reserved.

PY - 2009

Y1 - 2009

N2 - In this work, it is shown that recombination in regioregular poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester (RRP3HT:PCBM) bulk-heterojunction solar cells is caused by the two dimensional (2D) Langevin recombination in the lamellar structures of RRP3HT, which are formed after annealing process. Due to 2D Langevin process, bimolecular recombination coefficient is reduced in comparison with three dimensional Langevin case, and bimolecular recombination coefficient depends on the density of charge carriers n1/2. Data obtained from the different experimental techniques (charge extraction with linearly increasing voltage, integral time of flight, double injection current transients and transient absorption spectroscopy) confirms 2D Langevin recombination in RR3PHT.

AB - In this work, it is shown that recombination in regioregular poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester (RRP3HT:PCBM) bulk-heterojunction solar cells is caused by the two dimensional (2D) Langevin recombination in the lamellar structures of RRP3HT, which are formed after annealing process. Due to 2D Langevin process, bimolecular recombination coefficient is reduced in comparison with three dimensional Langevin case, and bimolecular recombination coefficient depends on the density of charge carriers n1/2. Data obtained from the different experimental techniques (charge extraction with linearly increasing voltage, integral time of flight, double injection current transients and transient absorption spectroscopy) confirms 2D Langevin recombination in RR3PHT.

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VL - 95

JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Two dimensional Langevin recombination in regioregular poly(3- hexylthiophene)

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