N-Doping improves charge transport and morphology in the organic non-fullerene acceptor O-IDTBR
Abstract
Molecular doping has been shown to improve the performance of various organic (opto)electronic devices. When compared to p-doped systems, research into n-doped organic small-molecules is relatively limited, primarily due to the lack of suitable dopants and the often encountered unfavourable microstructural effects. These factors have prevented the use of n-doping in a wider range of existing materials, such as non-fullerene acceptors (NFAs), that have already shown great promise for a range of (opto)electronic applications. Here, we show that several different molecular n-dopants, namely [1,2-b:2',1'-d]benzo[i][2.5]benzodiazocine potassium triflate adduct (DMBI-BDZC), tetra-n-butylammonium fluoride (TBAF) and 4-(2,3-dihydro-1,3-dimethyl-1H-benzimidazol-2-yl)-N,N-dimethylbenzenamine (N-DMBI), can be used to n-dope the molecular semiconductor O-IDTBR, a promising NFA, and increase the electron field-effect mobility to >1 cm2 V-1 s-1. By combining complementary experimental techniques with computer simulations of doping and charge carrier dynamics, we show that improved charge transport arises from synergistic effects of n-type doping and morphological changes. Specifically, a new, previously unreported dopant-induced packing orientation results in one of the highest electron mobility values reported to-date for an NFA molecule. Overall, this work highlights the importance of dopant–semiconductor interactions and their impact on morphology, showing that dopant-induced molecular packing motifs may be generic and a key element of the chargemore »
- Authors:
-
[1];
[4];
[5];
[5];
[3];
[6];
[5]
- Univ. of Kentucky, Lexington, KY (United States); King Abdullah University of Science and Technology (Saudi Arabia)
- Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
- Max Planck Inst. for Polymer Research, Mainz (Germany)
- National Technical University of Athens (Greece)
- King Abdullah University of Science and Technology (Saudi Arabia)
- Imperial College, London (United Kingdom)
- Univ. of Oxford (United Kingdom)
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1776539
- Report Number(s):
- BNL-221238-2021-JAAM
Journal ID: ISSN 2050-7526
- Grant/Contract Number:
- SC0012704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Materials Chemistry C
- Additional Journal Information:
- Journal Volume: 9; Journal Issue: 13; Journal ID: ISSN 2050-7526
- Publisher:
- Royal Society of Chemistry
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Paterson, Alexandra F., Li, Ruipeng, Markina, Anastasia, Tsetseris, Leonidas, MacPhee, Sky, Faber, Hendrik, Emwas, Abdul-Hamid, Panidi, Julianna, Bristow, Helen, Wadsworth, Andrew, Baran, Derya, Andrienko, Denis, Heeney, Martin, McCulloch, Iain, and Anthopoulos, Thomas D. N-Doping improves charge transport and morphology in the organic non-fullerene acceptor O-IDTBR. United States: N. p., 2021.
Web. doi:10.1039/d0tc05861k.
Paterson, Alexandra F., Li, Ruipeng, Markina, Anastasia, Tsetseris, Leonidas, MacPhee, Sky, Faber, Hendrik, Emwas, Abdul-Hamid, Panidi, Julianna, Bristow, Helen, Wadsworth, Andrew, Baran, Derya, Andrienko, Denis, Heeney, Martin, McCulloch, Iain, & Anthopoulos, Thomas D. N-Doping improves charge transport and morphology in the organic non-fullerene acceptor O-IDTBR. United States. https://doi.org/10.1039/d0tc05861k
Paterson, Alexandra F., Li, Ruipeng, Markina, Anastasia, Tsetseris, Leonidas, MacPhee, Sky, Faber, Hendrik, Emwas, Abdul-Hamid, Panidi, Julianna, Bristow, Helen, Wadsworth, Andrew, Baran, Derya, Andrienko, Denis, Heeney, Martin, McCulloch, Iain, and Anthopoulos, Thomas D. Wed .
"N-Doping improves charge transport and morphology in the organic non-fullerene acceptor O-IDTBR". United States. https://doi.org/10.1039/d0tc05861k. https://www.osti.gov/servlets/purl/1776539.
@article{osti_1776539,
title = {N-Doping improves charge transport and morphology in the organic non-fullerene acceptor O-IDTBR},
author = {Paterson, Alexandra F. and Li, Ruipeng and Markina, Anastasia and Tsetseris, Leonidas and MacPhee, Sky and Faber, Hendrik and Emwas, Abdul-Hamid and Panidi, Julianna and Bristow, Helen and Wadsworth, Andrew and Baran, Derya and Andrienko, Denis and Heeney, Martin and McCulloch, Iain and Anthopoulos, Thomas D.},
abstractNote = {Molecular doping has been shown to improve the performance of various organic (opto)electronic devices. When compared to p-doped systems, research into n-doped organic small-molecules is relatively limited, primarily due to the lack of suitable dopants and the often encountered unfavourable microstructural effects. These factors have prevented the use of n-doping in a wider range of existing materials, such as non-fullerene acceptors (NFAs), that have already shown great promise for a range of (opto)electronic applications. Here, we show that several different molecular n-dopants, namely [1,2-b:2',1'-d]benzo[i][2.5]benzodiazocine potassium triflate adduct (DMBI-BDZC), tetra-n-butylammonium fluoride (TBAF) and 4-(2,3-dihydro-1,3-dimethyl-1H-benzimidazol-2-yl)-N,N-dimethylbenzenamine (N-DMBI), can be used to n-dope the molecular semiconductor O-IDTBR, a promising NFA, and increase the electron field-effect mobility to >1 cm2 V-1 s-1. By combining complementary experimental techniques with computer simulations of doping and charge carrier dynamics, we show that improved charge transport arises from synergistic effects of n-type doping and morphological changes. Specifically, a new, previously unreported dopant-induced packing orientation results in one of the highest electron mobility values reported to-date for an NFA molecule. Overall, this work highlights the importance of dopant–semiconductor interactions and their impact on morphology, showing that dopant-induced molecular packing motifs may be generic and a key element of the charge transport enhancement observed in doped organics.},
doi = {10.1039/d0tc05861k},
journal = {Journal of Materials Chemistry C},
number = 13,
volume = 9,
place = {United States},
year = {Wed Mar 10 00:00:00 EST 2021},
month = {Wed Mar 10 00:00:00 EST 2021}
}
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