Impact of the Crystallite Orientation Distribution on Exciton Transport in Donor–Acceptor Conjugated Polymers

Alexander L. Ayzner; Jianguo Mei; Anthony Appleton; Dean DeLongchamp; Alexandre Nardes; Stephanie Benight; Nikos Kopidakis; Michael F. Toney; Zhenan Bao

doi:10.1021/acsami.5b02968

Impact of the Crystallite Orientation Distribution on Exciton Transport in Donor–Acceptor Conjugated Polymers

Alexander L. Ayzner, Jianguo Mei, Anthony Appleton, Dean DeLongchamp, Alexandre Nardes, Stephanie Benight, Nikos Kopidakis, Michael F. Toney, Zhenan Bao

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

20 Scopus citations

Abstract

© 2015 American Chemical Society. Conjugated polymers are widely used materials in organic photovoltaic devices. Owing to their extended electronic wave functions, they often form semicrystalline thin films. In this work, we aim to understand whether distribution of crystallographic orientations affects exciton diffusion using a low-band-gap polymer backbone motif that is representative of the donor/acceptor copolymer class. Using the fact that the polymer side chain can tune the dominant crystallographic orientation in the thin film, we have measured the quenching of polymer photoluminescence, and thus the extent of exciton dissociation, as a function of crystal orientation with respect to a quenching substrate. We find that the crystallite orientation distribution has little effect on the average exciton diffusion length. We suggest several possibilities for the lack of correlation between crystallographic texture and exciton transport in semicrystalline conjugated polymer films.

Original language	English (US)
Pages (from-to)	28035-28041
Number of pages	7
Journal	ACS Applied Materials & Interfaces
Volume	7
Issue number	51
DOIs	https://doi.org/10.1021/acsami.5b02968
State	Published - Aug 21 2015
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUS-C1-015-21
Acknowledgements: We thank the Bent group at Stanford University for help with ALD preparation of titania films. This work was partially supported by the Center for Advanced Molecular Photovoltaics, Award No. KUS-C1-015-21, made by King Abdullah University of Science and Technology. We also acknowledge support from the Global Climate and Energy Program at Stanford. GIXD measurements were carried out at the Stanford Synchrotron Radiation Lightsource, a national user facility operated by Stanford University on behalf of the U.S. Department of Energy, Office of Basic Energy Sciences. N.K. and A.M.N. acknowledge funding from the Energy Frontier Research Center “Molecularly Engineered Energy Materials (MEEMs)” funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract Number DE-SC0001342:001.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1021/acsami.5b02968

Cite this

@article{800456e9a8e34ed7b9278ee7443ee3ba,

title = "Impact of the Crystallite Orientation Distribution on Exciton Transport in Donor–Acceptor Conjugated Polymers",

abstract = "{\textcopyright} 2015 American Chemical Society. Conjugated polymers are widely used materials in organic photovoltaic devices. Owing to their extended electronic wave functions, they often form semicrystalline thin films. In this work, we aim to understand whether distribution of crystallographic orientations affects exciton diffusion using a low-band-gap polymer backbone motif that is representative of the donor/acceptor copolymer class. Using the fact that the polymer side chain can tune the dominant crystallographic orientation in the thin film, we have measured the quenching of polymer photoluminescence, and thus the extent of exciton dissociation, as a function of crystal orientation with respect to a quenching substrate. We find that the crystallite orientation distribution has little effect on the average exciton diffusion length. We suggest several possibilities for the lack of correlation between crystallographic texture and exciton transport in semicrystalline conjugated polymer films.",

author = "Ayzner, {Alexander L.} and Jianguo Mei and Anthony Appleton and Dean DeLongchamp and Alexandre Nardes and Stephanie Benight and Nikos Kopidakis and Toney, {Michael F.} and Zhenan Bao",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): KUS-C1-015-21 Acknowledgements: We thank the Bent group at Stanford University for help with ALD preparation of titania films. This work was partially supported by the Center for Advanced Molecular Photovoltaics, Award No. KUS-C1-015-21, made by King Abdullah University of Science and Technology. We also acknowledge support from the Global Climate and Energy Program at Stanford. GIXD measurements were carried out at the Stanford Synchrotron Radiation Lightsource, a national user facility operated by Stanford University on behalf of the U.S. Department of Energy, Office of Basic Energy Sciences. N.K. and A.M.N. acknowledge funding from the Energy Frontier Research Center “Molecularly Engineered Energy Materials (MEEMs)” funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract Number DE-SC0001342:001. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

year = "2015",

month = aug,

day = "21",

doi = "10.1021/acsami.5b02968",

language = "English (US)",

volume = "7",

pages = "28035--28041",

journal = "ACS Applied Materials & Interfaces",

issn = "1944-8244",

publisher = "American Chemical Society",

number = "51",

}

TY - JOUR

T1 - Impact of the Crystallite Orientation Distribution on Exciton Transport in Donor–Acceptor Conjugated Polymers

AU - Ayzner, Alexander L.

AU - Mei, Jianguo

AU - Appleton, Anthony

AU - DeLongchamp, Dean

AU - Nardes, Alexandre

AU - Benight, Stephanie

AU - Kopidakis, Nikos

AU - Toney, Michael F.

AU - Bao, Zhenan

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): KUS-C1-015-21 Acknowledgements: We thank the Bent group at Stanford University for help with ALD preparation of titania films. This work was partially supported by the Center for Advanced Molecular Photovoltaics, Award No. KUS-C1-015-21, made by King Abdullah University of Science and Technology. We also acknowledge support from the Global Climate and Energy Program at Stanford. GIXD measurements were carried out at the Stanford Synchrotron Radiation Lightsource, a national user facility operated by Stanford University on behalf of the U.S. Department of Energy, Office of Basic Energy Sciences. N.K. and A.M.N. acknowledge funding from the Energy Frontier Research Center “Molecularly Engineered Energy Materials (MEEMs)” funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract Number DE-SC0001342:001. This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2015/8/21

Y1 - 2015/8/21

N2 - © 2015 American Chemical Society. Conjugated polymers are widely used materials in organic photovoltaic devices. Owing to their extended electronic wave functions, they often form semicrystalline thin films. In this work, we aim to understand whether distribution of crystallographic orientations affects exciton diffusion using a low-band-gap polymer backbone motif that is representative of the donor/acceptor copolymer class. Using the fact that the polymer side chain can tune the dominant crystallographic orientation in the thin film, we have measured the quenching of polymer photoluminescence, and thus the extent of exciton dissociation, as a function of crystal orientation with respect to a quenching substrate. We find that the crystallite orientation distribution has little effect on the average exciton diffusion length. We suggest several possibilities for the lack of correlation between crystallographic texture and exciton transport in semicrystalline conjugated polymer films.

AB - © 2015 American Chemical Society. Conjugated polymers are widely used materials in organic photovoltaic devices. Owing to their extended electronic wave functions, they often form semicrystalline thin films. In this work, we aim to understand whether distribution of crystallographic orientations affects exciton diffusion using a low-band-gap polymer backbone motif that is representative of the donor/acceptor copolymer class. Using the fact that the polymer side chain can tune the dominant crystallographic orientation in the thin film, we have measured the quenching of polymer photoluminescence, and thus the extent of exciton dissociation, as a function of crystal orientation with respect to a quenching substrate. We find that the crystallite orientation distribution has little effect on the average exciton diffusion length. We suggest several possibilities for the lack of correlation between crystallographic texture and exciton transport in semicrystalline conjugated polymer films.

UR - http://hdl.handle.net/10754/598568

UR - https://pubs.acs.org/doi/10.1021/acsami.5b02968

UR - http://www.scopus.com/inward/record.url?scp=84952951453&partnerID=8YFLogxK

U2 - 10.1021/acsami.5b02968

DO - 10.1021/acsami.5b02968

M3 - Article

C2 - 26292836

SN - 1944-8244

VL - 7

SP - 28035

EP - 28041

JO - ACS Applied Materials & Interfaces

JF - ACS Applied Materials & Interfaces

IS - 51

ER -

Impact of the Crystallite Orientation Distribution on Exciton Transport in Donor–Acceptor Conjugated Polymers

Abstract

Bibliographical note

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this