Analysis and modification of defective surface aggregates on PCDTBT:PCBM solar cell blends using combined Kelvin probe, conductive and bimodal atomic force microscopy
Abstract
Organic photovoltaic systems comprising donor polymers and acceptor fullerene derivatives are attractive for inexpensive energy harvesting. Extensive research on polymer solar cells has provided insight into the factors governing device-level efficiency and stability. However, the detailed investigation of nanoscale structures is still challenging. Here we demonstrate the analysis and modification of unidentified surface aggregates. The aggregates are characterized electrically by Kelvin probe force microscopy and conductive atomic force microscopy (C-AFM), whereby the correlation between local electrical potential and current confirms a defective charge transport. Bimodal AFM modification confirms that the aggregates exist on top of the solar cell structure, and is used to remove them and to reveal the underlying active layer. The systematic analysis of the surface aggregates suggests that the structure consists of PCBM molecules.
- Authors:
-
- George Washington Univ., Washington, DC (United States)
- Publication Date:
- Research Org.:
- George Washington Univ., Washington, DC (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1367086
- Grant/Contract Number:
- SC0011912
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Beilstein Journal of Nanotechnology
- Additional Journal Information:
- Journal Volume: 8; Journal ID: ISSN 2190-4286
- Publisher:
- Beilstein Institute
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 77 NANOSCIENCE AND NANOTECHNOLOGY; conductive atomic force microscopy; Kelvin probe force microscopy; multifrequency AFM; organic photovoltaics; polymer solar cells; surface defects
Citation Formats
Noh, Hanaul, Diaz, Alfredo J., and Solares, Santiago D. Analysis and modification of defective surface aggregates on PCDTBT:PCBM solar cell blends using combined Kelvin probe, conductive and bimodal atomic force microscopy. United States: N. p., 2017.
Web. doi:10.3762/bjnano.8.62.
Noh, Hanaul, Diaz, Alfredo J., & Solares, Santiago D. Analysis and modification of defective surface aggregates on PCDTBT:PCBM solar cell blends using combined Kelvin probe, conductive and bimodal atomic force microscopy. United States. https://doi.org/10.3762/bjnano.8.62
Noh, Hanaul, Diaz, Alfredo J., and Solares, Santiago D. Wed .
"Analysis and modification of defective surface aggregates on PCDTBT:PCBM solar cell blends using combined Kelvin probe, conductive and bimodal atomic force microscopy". United States. https://doi.org/10.3762/bjnano.8.62. https://www.osti.gov/servlets/purl/1367086.
@article{osti_1367086,
title = {Analysis and modification of defective surface aggregates on PCDTBT:PCBM solar cell blends using combined Kelvin probe, conductive and bimodal atomic force microscopy},
author = {Noh, Hanaul and Diaz, Alfredo J. and Solares, Santiago D.},
abstractNote = {Organic photovoltaic systems comprising donor polymers and acceptor fullerene derivatives are attractive for inexpensive energy harvesting. Extensive research on polymer solar cells has provided insight into the factors governing device-level efficiency and stability. However, the detailed investigation of nanoscale structures is still challenging. Here we demonstrate the analysis and modification of unidentified surface aggregates. The aggregates are characterized electrically by Kelvin probe force microscopy and conductive atomic force microscopy (C-AFM), whereby the correlation between local electrical potential and current confirms a defective charge transport. Bimodal AFM modification confirms that the aggregates exist on top of the solar cell structure, and is used to remove them and to reveal the underlying active layer. The systematic analysis of the surface aggregates suggests that the structure consists of PCBM molecules.},
doi = {10.3762/bjnano.8.62},
journal = {Beilstein Journal of Nanotechnology},
number = ,
volume = 8,
place = {United States},
year = {Wed Mar 08 00:00:00 EST 2017},
month = {Wed Mar 08 00:00:00 EST 2017}
}
Web of Science
Works referenced in this record:
Polymer solar cells
journal, February 2012
- Li, Gang; Zhu, Rui; Yang, Yang
- Nature Photonics, Vol. 6, Issue 3
Roll-to-roll fabrication of polymer solar cells
journal, January 2012
- Søndergaard, Roar; Hösel, Markus; Angmo, Dechan
- Materials Today, Vol. 15, Issue 1-2
Efficiency of bulk-heterojunction organic solar cells
journal, December 2013
- Scharber, M. C.; Sariciftci, N. S.
- Progress in Polymer Science, Vol. 38, Issue 12
High Efficiency Polymer Solar Cells with Long Operating Lifetimes
journal, April 2011
- Peters, Craig H.; Sachs-Quintana, I. T.; Kastrop, John P.
- Advanced Energy Materials, Vol. 1, Issue 4
Stability of Polymer Solar Cells
journal, December 2011
- Jørgensen, Mikkel; Norrman, Kion; Gevorgyan, Suren A.
- Advanced Materials, Vol. 24, Issue 5
Single-Junction Polymer Solar Cells Exceeding 10% Power Conversion Efficiency
journal, November 2014
- Chen, Jing-De; Cui, Chaohua; Li, Yan-Qing
- Advanced Materials, Vol. 27, Issue 6
Polymer Photovoltaic Cells: Enhanced Efficiencies via a Network of Internal Donor-Acceptor Heterojunctions
journal, December 1995
- Yu, G.; Gao, J.; Hummelen, J. C.
- Science, Vol. 270, Issue 5243, p. 1789-1791
High-efficiency solution processable polymer photovoltaic cells by self-organization of polymer blends
journal, October 2005
- Li, Gang; Shrotriya, Vishal; Huang, Jinsong
- Nature Materials, Vol. 4, Issue 11, p. 864-868
Control of the nanoscale crystallinity and phase separation in polymer solar cells
journal, March 2008
- Chu, Chih-Wei; Yang, Hoichang; Hou, Wei-Jen
- Applied Physics Letters, Vol. 92, Issue 10
2.5% efficient organic plastic solar cells
journal, February 2001
- Shaheen, Sean E.; Brabec, Christoph J.; Sariciftci, N. Serdar
- Applied Physics Letters, Vol. 78, Issue 6, p. 841-843
Effects of Postproduction Treatment on Plastic Solar Cells
journal, January 2003
- Padinger, F.; Rittberger, R. S.; Sariciftci, N. S.
- Advanced Functional Materials, Vol. 13, Issue 1, p. 85-88
Efficiency enhancement in low-bandgap polymer solar cells by processing with alkane dithiols
journal, May 2007
- Peet, J.; Kim, J. Y.; Coates, N. E.
- Nature Materials, Vol. 6, Issue 7, p. 497-500
Morphology characterization in organic and hybrid solar cells
journal, January 2012
- Chen, Wei; Nikiforov, Maxim P.; Darling, Seth B.
- Energy & Environmental Science, Vol. 5, Issue 8
Visualizing physical, electronic, and optical properties of organic photovoltaic cells
journal, January 2013
- Pfannmöller, Martin; Kowalsky, Wolfgang; Schröder, Rasmus R.
- Energy & Environmental Science, Vol. 6, Issue 10
Electrical Scanning Probe Microscopy on Active Organic Electronic Devices
journal, January 2009
- Pingree, Liam S. C.; Reid, Obadiah G.; Ginger, David S.
- Advanced Materials, Vol. 21, Issue 1, p. 19-28
Scanning probe microscopy of solar cells: From inorganic thin films to organic photovoltaics
journal, July 2012
- O’Dea, James R.; Brown, Louisa M.; Hoepker, Nikolas
- MRS Bulletin, Vol. 37, Issue 7
PCDTBT: en route for low cost plastic solar cells
journal, January 2013
- Beaupré, Serge; Leclerc, Mario
- Journal of Materials Chemistry A, Vol. 1, Issue 37
The emergence of multifrequency force microscopy
journal, April 2012
- Garcia, Ricardo; Herruzo, Elena T.
- Nature Nanotechnology, Vol. 7, Issue 4
Long-term stable polymer solar cells with significantly reduced burn-in loss
journal, December 2014
- Kong, Jaemin; Song, Suhee; Yoo, Minji
- Nature Communications, Vol. 5, Issue 1
Effect of mixed solvents on PCDTBT:PC70BM based solar cells
journal, November 2011
- Alem, Salima; Chu, Ta-Ya; Tse, Shing C.
- Organic Electronics, Vol. 12, Issue 11
Bulk heterojunction solar cells with internal quantum efficiency approaching 100%
journal, April 2009
- Park, Sung Heum; Roy, Anshuman; Beaupré, Serge
- Nature Photonics, Vol. 3, Issue 5, p. 297-302
Compensating electrostatic forces by single-scan Kelvin probe force microscopy
journal, May 2007
- Ziegler, Dominik; Rychen, Jörg; Naujoks, Nicola
- Nanotechnology, Vol. 18, Issue 22
The Role of Mesoscopic PCBM Crystallites in Solvent Vapor Annealed Copolymer Solar Cells
journal, February 2009
- Bull, Tricia A.; Pingree, Liam S. C.; Jenekhe, Samson A.
- ACS Nano, Vol. 3, Issue 3, p. 627-636
Sub-surface imaging of carbon nanotube–polymer composites using dynamic AFM methods
journal, March 2013
- Cadena, Maria J.; Misiego, Rocio; Smith, Kyle C.
- Nanotechnology, Vol. 24, Issue 13
Toward Improved Lifetimes of Organic Solar Cells under Thermal Stress: Substrate-Dependent Morphological Stability of PCDTBT:PCBM Films and Devices
journal, October 2015
- Li, Zhe; Ho Chiu, Kar; Shahid Ashraf, Raja
- Scientific Reports, Vol. 5, Issue 1
The Nanoscale Morphology of a PCDTBT:PCBM Photovoltaic Blend
journal, April 2011
- Staniec, Paul A.; Parnell, Andrew J.; Dunbar, Alan D. F.
- Advanced Energy Materials, Vol. 1, Issue 4
Imaging the Evolution of Nanoscale Photocurrent Collection and Transport Networks during Annealing of Polythiophene/Fullerene Solar Cells
journal, August 2009
- Pingree, Liam S. C.; Reid, Obadiah G.; Ginger, David S.
- Nano Letters, Vol. 9, Issue 8
Space Charge Limited Current Measurements on Conjugated Polymer Films using Conductive Atomic Force Microscopy
journal, June 2008
- Reid, Obadiah G.; Munechika, Keiko; Ginger, David S.
- Nano Letters, Vol. 8, Issue 6
Scanning tunneling spectroscopy on organic semiconductors: Experiment and model
journal, July 2004
- Kemerink, M.; Alvarado, S. F.; Müller, P.
- Physical Review B, Vol. 70, Issue 4
Energy level alignment of poly(3-hexylthiophene): [6,6]-phenyl C61 butyric acid methyl ester bulk heterojunction
journal, July 2009
- Xu, Zheng; Chen, Li-Min; Chen, Mei-Hsin
- Applied Physics Letters, Vol. 95, Issue 1, Article No. 013301
Nanoscale Charge Transport and Internal Structure of Bulk Heterojunction Conjugated Polymer/Fullerene Solar Cells by Scanning Probe Microscopy
journal, April 2008
- Dante, Mark; Peet, Jeffrey; Nguyen, Thuc-Quyen
- The Journal of Physical Chemistry C, Vol. 112, Issue 18
Organic semiconductors: A theoretical characterization of the basic parameters governing charge transport
journal, April 2002
- Bredas, J. L.; Calbert, J. P.; da Silva Filho, D. A.
- Proceedings of the National Academy of Sciences, Vol. 99, Issue 9
Role of the Charge Transfer State in Organic Donor-Acceptor Solar Cells
journal, August 2010
- Deibel, Carsten; Strobel, Thomas; Dyakonov, Vladimir
- Advanced Materials, Vol. 22, Issue 37
Understanding Local and Macroscopic Electron Mobilities in the Fullerene Network of Conjugated Polymer-based Solar Cells: Time-Resolved Microwave Conductivity and Theory
journal, September 2013
- Aguirre, Jordan C.; Arntsen, Christopher; Hernandez, Samuel
- Advanced Functional Materials, Vol. 24, Issue 6
Trade-offs in sensitivity and sampling depth in bimodal atomic force microscopy and comparison to the trimodal case
journal, January 2014
- Eslami, Babak; Ebeling, Daniel; Solares, Santiago D.
- Beilstein Journal of Nanotechnology, Vol. 5
Visualizing the Subsurface of Soft Matter: Simultaneous Topographical Imaging, Depth Modulation, and Compositional Mapping with Triple Frequency Atomic Force Microscopy
journal, October 2013
- Ebeling, Daniel; Eslami, Babak; Solares, Santiago De Jesus
- ACS Nano, Vol. 7, Issue 11
Compositional mapping of surfaces in atomic force microscopy by excitation of the second normal mode of the microcantilever
journal, January 2004
- Rodrı́guez, Tomás R.; Garcı́a, Ricardo
- Applied Physics Letters, Vol. 84, Issue 3
Theory of Multifrequency Atomic Force Microscopy
journal, February 2008
- Lozano, Jose R.; Garcia, Ricardo
- Physical Review Letters, Vol. 100, Issue 7
Molecular Packing and Arrangement Govern the Photo-Oxidative Stability of Organic Photovoltaic Materials
journal, September 2015
- Mateker, William R.; Heumueller, Thomas; Cheacharoen, Rongrong
- Chemistry of Materials, Vol. 27, Issue 18
High-Resolution Kelvin Probe Force Microscopy Imaging of Interface Dipoles and Photogenerated Charges in Organic Donor–Acceptor Photovoltaic Blends
journal, December 2015
- Fuchs, Franz; Caffy, Florent; Demadrille, Renaud
- ACS Nano, Vol. 10, Issue 1
Influence of fullerene photodimerization on the PCBM crystallization in polymer: Fullerene bulk heterojunctions under thermal stress
journal, June 2013
- Piersimoni, Fortunato; Degutis, Giedrius; Bertho, Sabine
- Journal of Polymer Science Part B: Polymer Physics, Vol. 51, Issue 16
Control of the nanoscale crystallinity and phase separation in polymer solar cells
text, January 2008
- W. -J., Hou,; C. -W., Chu,; H., Yang,
- The University of North Carolina at Chapel Hill University Libraries
Polymer Solar Cells
journal, January 1991
- Zhuravleva, T. S.; Vannikov, A. V.
- Materials Science Forum, Vol. 21
Understanding Local and Macroscopic Electron Mobilities in the Fullerene Network of Conjugated Polymer-based Solar Cells: Time-Resolved Microwave Conductivity and Theory
journal, September 2013
- Aguirre, Jordan C.; Arntsen, Christopher; Hernandez, Samuel
- Advanced Functional Materials, Vol. 24, Issue 6
Electrical Scanning Probe Microscopy on Active Organic Electronic Devices
journal, January 2009
- Pingree, Liam S. C.; Reid, Obadiah G.; Ginger, David S.
- Advanced Materials, Vol. 21, Issue 1, p. 19-28
Role of the Charge Transfer State in Organic Donor-Acceptor Solar Cells
journal, August 2010
- Deibel, Carsten; Strobel, Thomas; Dyakonov, Vladimir
- Advanced Materials, Vol. 22, Issue 37
High Efficiency Polymer Solar Cells with Long Operating Lifetimes
journal, April 2011
- Peters, Craig H.; Sachs-Quintana, I. T.; Kastrop, John P.
- Advanced Energy Materials, Vol. 1, Issue 4
The Nanoscale Morphology of a PCDTBT:PCBM Photovoltaic Blend
journal, April 2011
- Staniec, Paul A.; Parnell, Andrew J.; Dunbar, Alan D. F.
- Advanced Energy Materials, Vol. 1, Issue 4
Influence of fullerene photodimerization on the PCBM crystallization in polymer: Fullerene bulk heterojunctions under thermal stress
journal, June 2013
- Piersimoni, Fortunato; Degutis, Giedrius; Bertho, Sabine
- Journal of Polymer Science Part B: Polymer Physics, Vol. 51, Issue 16
Effect of mixed solvents on PCDTBT:PC70BM based solar cells
journal, November 2011
- Alem, Salima; Chu, Ta-Ya; Tse, Shing C.
- Organic Electronics, Vol. 12, Issue 11
Efficiency of bulk-heterojunction organic solar cells
journal, December 2013
- Scharber, M. C.; Sariciftci, N. S.
- Progress in Polymer Science, Vol. 38, Issue 12
Molecular Packing and Arrangement Govern the Photo-Oxidative Stability of Organic Photovoltaic Materials
journal, September 2015
- Mateker, William R.; Heumueller, Thomas; Cheacharoen, Rongrong
- Chemistry of Materials, Vol. 27, Issue 18
High-Resolution Kelvin Probe Force Microscopy Imaging of Interface Dipoles and Photogenerated Charges in Organic Donor–Acceptor Photovoltaic Blends
journal, December 2015
- Fuchs, Franz; Caffy, Florent; Demadrille, Renaud
- ACS Nano, Vol. 10, Issue 1
Nanoscale Charge Transport and Internal Structure of Bulk Heterojunction Conjugated Polymer/Fullerene Solar Cells by Scanning Probe Microscopy
journal, April 2008
- Dante, Mark; Peet, Jeffrey; Nguyen, Thuc-Quyen
- The Journal of Physical Chemistry C, Vol. 112, Issue 18
Space Charge Limited Current Measurements on Conjugated Polymer Films using Conductive Atomic Force Microscopy
journal, June 2008
- Reid, Obadiah G.; Munechika, Keiko; Ginger, David S.
- Nano Letters, Vol. 8, Issue 6
Imaging the Evolution of Nanoscale Photocurrent Collection and Transport Networks during Annealing of Polythiophene/Fullerene Solar Cells
journal, August 2009
- Pingree, Liam S. C.; Reid, Obadiah G.; Ginger, David S.
- Nano Letters, Vol. 9, Issue 8
Visualizing the Subsurface of Soft Matter: Simultaneous Topographical Imaging, Depth Modulation, and Compositional Mapping with Triple Frequency Atomic Force Microscopy
journal, October 2013
- Ebeling, Daniel; Eslami, Babak; Solares, Santiago De Jesus
- ACS Nano, Vol. 7, Issue 11
The Role of Mesoscopic PCBM Crystallites in Solvent Vapor Annealed Copolymer Solar Cells
journal, February 2009
- Bull, Tricia A.; Pingree, Liam S. C.; Jenekhe, Samson A.
- ACS Nano, Vol. 3, Issue 3, p. 627-636
High-efficiency solution processable polymer photovoltaic cells by self-organization of polymer blends
journal, October 2005
- Li, Gang; Shrotriya, Vishal; Huang, Jinsong
- Nature Materials, Vol. 4, Issue 11, p. 864-868
Efficiency enhancement in low-bandgap polymer solar cells by processing with alkane dithiols
journal, May 2007
- Peet, J.; Kim, J. Y.; Coates, N. E.
- Nature Materials, Vol. 6, Issue 7, p. 497-500
The emergence of multifrequency force microscopy
journal, April 2012
- Garcia, Ricardo; Herruzo, Elena T.
- Nature Nanotechnology, Vol. 7, Issue 4
Bulk heterojunction solar cells with internal quantum efficiency approaching 100%
journal, April 2009
- Park, Sung Heum; Roy, Anshuman; Beaupré, Serge
- Nature Photonics, Vol. 3, Issue 5, p. 297-302
Polymer solar cells
journal, February 2012
- Li, Gang; Zhu, Rui; Yang, Yang
- Nature Photonics, Vol. 6, Issue 3
Toward Improved Lifetimes of Organic Solar Cells under Thermal Stress: Substrate-Dependent Morphological Stability of PCDTBT:PCBM Films and Devices
journal, October 2015
- Li, Zhe; Ho Chiu, Kar; Shahid Ashraf, Raja
- Scientific Reports, Vol. 5, Issue 1
Morphology characterization in organic and hybrid solar cells
journal, January 2012
- Chen, Wei; Nikiforov, Maxim P.; Darling, Seth B.
- Energy & Environmental Science, Vol. 5, Issue 8
Visualizing physical, electronic, and optical properties of organic photovoltaic cells
journal, January 2013
- Pfannmöller, Martin; Kowalsky, Wolfgang; Schröder, Rasmus R.
- Energy & Environmental Science, Vol. 6, Issue 10
PCDTBT: en route for low cost plastic solar cells
journal, January 2013
- Beaupré, Serge; Leclerc, Mario
- Journal of Materials Chemistry A, Vol. 1, Issue 37
2.5% efficient organic plastic solar cells
journal, February 2001
- Shaheen, Sean E.; Brabec, Christoph J.; Sariciftci, N. Serdar
- Applied Physics Letters, Vol. 78, Issue 6, p. 841-843
Control of the nanoscale crystallinity and phase separation in polymer solar cells
journal, March 2008
- Chu, Chih-Wei; Yang, Hoichang; Hou, Wei-Jen
- Applied Physics Letters, Vol. 92, Issue 10
Energy level alignment of poly(3-hexylthiophene): [6,6]-phenyl C61 butyric acid methyl ester bulk heterojunction
journal, July 2009
- Xu, Zheng; Chen, Li-Min; Chen, Mei-Hsin
- Applied Physics Letters, Vol. 95, Issue 1, Article No. 013301
Compensating electrostatic forces by single-scan Kelvin probe force microscopy
journal, May 2007
- Ziegler, Dominik; Rychen, Jörg; Naujoks, Nicola
- Nanotechnology, Vol. 18, Issue 22
Polymer Photovoltaic Cells: Enhanced Efficiencies via a Network of Internal Donor-Acceptor Heterojunctions
journal, December 1995
- Yu, G.; Gao, J.; Hummelen, J. C.
- Science, Vol. 270, Issue 5243, p. 1789-1791
Scanning probe microscopy of solar cells: From inorganic thin films to organic photovoltaics
journal, July 2012
- O’Dea, James R.; Brown, Louisa M.; Hoepker, Nikolas
- MRS Bulletin, Vol. 37, Issue 7
Works referencing / citing this record:
Theory of Single-Impact Atomic Force Spectroscopy in liquids with material contrast
journal, May 2018
- López-Guerra, Enrique A.; Banfi, Francesco; Solares, Santiago D.
- Scientific Reports, Vol. 8, Issue 1
Material property analytical relations for the case of an AFM probe tapping a viscoelastic surface containing multiple characteristic times
journal, January 2017
- López-Guerra, Enrique A.; Solares, Santiago D.
- Beilstein Journal of Nanotechnology, Vol. 8
Theory of Single-Impact Atomic Force Spectroscopy in liquids with material contrast
journal, May 2018
- López-Guerra, Enrique A.; Banfi, Francesco; Solares, Santiago D.
- Scientific Reports, Vol. 8, Issue 1
Current measurements in the intermittent-contact mode of atomic force microscopy using the Fourier method: a feasibility analysis
journal, January 2020
- Uluutku, Berkin; Solares, Santiago D.
- Beilstein Journal of Nanotechnology, Vol. 11
Material property analytical relations for the case of an AFM probe tapping a viscoelastic surface containing multiple characteristic times
journal, January 2017
- López-Guerra, Enrique A.; Solares, Santiago D.
- Beilstein Journal of Nanotechnology, Vol. 8
Material discrimination and mixture ratio estimation in nanocomposites via harmonic atomic force microscopy
journal, December 2017
- Zhang, Weijie; Chen, Yuhang; Xia, Xicheng
- Beilstein Journal of Nanotechnology, Vol. 8