Highly conductive PEDOT:PSS transparent electrode prepared by a post-spin-rinsing method for efficient ITO-free polymer solar cells

We have proposed a post-spin-rinsing method (PSRM) with polar organic solvent dimethyl sulfoxide (DMSO) to prepare highly conductive and transparent PEDOT:PSS films. The PSRM-prepared PEDOT:PSS film exhibits a conductivity of 1335Scm−1, much higher than 776Scm−1 of the PEDOT:PSS film prepared with t...

Full description

Saved in:
Bibliographic Details
Published in:Solar energy materials and solar cells 2016-01, Vol.144, p.143-149
Main Authors: Zhang, Xiaoqin, Wu, Jiang, Wang, Jiantai, Zhang, Jun, Yang, Qingqing, Fu, Yingying, Xie, Zhiyuan
Format: Article
Language:English
Subjects:
Coiling
Conductivity
Dimethyl sulfoxide
Electrodes
Energy conversion efficiency
Indium
PEDOT:PSS
Photovoltaic cells
Polymer solar cell
Solar cells
Solar energy
Spin-rinsing
Transparent electrode
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We have proposed a post-spin-rinsing method (PSRM) with polar organic solvent dimethyl sulfoxide (DMSO) to prepare highly conductive and transparent PEDOT:PSS films. The PSRM-prepared PEDOT:PSS film exhibits a conductivity of 1335Scm−1, much higher than 776Scm−1 of the PEDOT:PSS film prepared with the conventional pre-adding method (PAM). In contrast to the PAM, the PSRM with DMSO is more effective to remove the insulating PSS and push the PEDOT chains from coiled to a linear/extended-coil alignment with conformation change from a benzoid structure to a more conductive quinoid structure, leading to an enhanced conductivity of the PEDOT:PSS film. The highly conductive PEDOT:PSS film is used as transparent electrode to fabricate indium tin oxide-free polymer solar cells and a power conversion efficiency of 4.82% is achieved for polymer solar cells based on PCDTBT:PC71BM blend. A post-spin-rinsing method (PSRM) with polar organic solvent DMSO is proposed to prepare high conductive PEDOT:PSS film. The PSRM-prepared PEDOT:PSS films achieve an average conductivity of 1335Scm−1, much higher than 776Scm−1 of the PEDOT:PSS films prepared with DMSO pre-adding method (PAM). The polymer solar cells with PSRM-prepared PEDOT:PSS as the transparent anode demonstrate superior photovoltaic performance compared to the PAM-prepared PEDOT:PSS based devices. [Display omitted] •A post-spin-rinsing method (PSRM) is proposed to enhance the conductivity of the PEDOT:PSS film.•The PSRM-prepared PEDOT:PSS film demonstrates a conductivity as high as 1335Scm−1.•The PSRM is more effective to remove the insulating PSS component in the PEDOT:PSS film.•The PSRM can promote PEDOT chains from coiled to a linear/extended-coil alignment.•Polymer solar cells using high conductive PEDOT:PSS as transparent anode show efficient photovoltaic performance.
ISSN:0927-0248
1879-3398
DOI:10.1016/j.solmat.2015.08.039