Imperial College London
Portrait Picture

DrYifanDong

Faculty of Natural Sciences, Department of Chemistry

 
 
 
//

Contact

 

yifan.dong12 Website

 
 
//

Location

 

G22Molecular Sciences Research HubWhite City Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Mohapatra:2021:10.1021/acs.jpcc.1c00340,
author = {Mohapatra, AA and Dong, Y and Boregowda, P and Mohanty, A and Sadhanala, A and Jiao, X and Narayan, A and McNeill, CR and Durrant, JR and Patil, S},
doi = {10.1021/acs.jpcc.1c00340},
journal = {The Journal of Physical Chemistry C: Energy Conversion and Storage, Optical and Electronic Devices, Interfaces, Nanomaterials, and Hard Matter},
pages = {6886--6896},
title = {Rational design of donor-acceptor based semiconducting copolymers with high dielectric constants},
url = {http://dx.doi.org/10.1021/acs.jpcc.1c00340},
volume = {125},
year = {2021}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The low dielectric constant of organic semiconductors limits the efficiency of organic solar cells (OSCs). In an attempt to improve the dielectric constant of conjugated polymers, we report the synthesis of three semiconducting copolymers by combining the thiophene-substituted diketopyrrolopyrrole (TDPP) monomer with three different monomeric units with varying electron donating/accepting strengths: benzodithiophene (BBT-3TEG-TDPP), TDPP (TDPP-3TEG-TDPP), and naphthalene diimide (P(gNDI-TDPP)). Among the series, BBT-3TEG-TDPP and P(gNDI-TDPP) exhibited the highest dielectric constants (∼5) at 1 MHz frequency, signifying the contribution of dipolar polarization from TEG side-chains. Furthermore, transient absorption spectroscopic studies performed on these polymers indicated low exciton diffusion length as observed in common organic semiconducting polymers. Our findings suggest that utilizing the polar side-chains enhances the dielectric constant in a frequency regime of megahertz. However, it is not sufficient to reduce the Coulombic interaction between hole and electron in excitonic solar cells.
AU  - Mohapatra,AA
AU  - Dong,Y
AU  - Boregowda,P
AU  - Mohanty,A
AU  - Sadhanala,A
AU  - Jiao,X
AU  - Narayan,A
AU  - McNeill,CR
AU  - Durrant,JR
AU  - Patil,S
DO  - 10.1021/acs.jpcc.1c00340
EP  - 6896
PY  - 2021///
SN  - 1932-7447
SP  - 6886
TI  - Rational design of donor-acceptor based semiconducting copolymers with high dielectric constants
T2  - The Journal of Physical Chemistry C: Energy Conversion and Storage, Optical and Electronic Devices, Interfaces, Nanomaterials, and Hard Matter
UR  - http://dx.doi.org/10.1021/acs.jpcc.1c00340
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000636924700040&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://pubs.acs.org/doi/10.1021/acs.jpcc.1c00340
UR  - http://hdl.handle.net/10044/1/89745
VL  - 125
ER  -
Download