Efficient PEDOT:PSS-Free Polymer Solar Cells with an Easily Accessible Polyacrylonitrile Polymer Material as a Novel Solution-Processable Anode Interfacial Layer.
We demonstrate that an easily accessible polyacrylonitrile (PAN) polymer can efficiently function as a novel solution-processable anode interfacial layer (AIL) to boost the device performances of polymer:fullerene-based solar cells (PSCs). The PAN thin film was simply prepared with spin-coating of a cost-efficient PAN solution dissolved in dimethylformamide on indium tin oxide (ITO), and the thin polymeric interlayer on PSC parameters and stability were systemically investigated. As a result, the cell efficiency of the PSC with PAN was remarkably enhanced compared to the device using bare ITO. Furthermore, with PAN, we finally achieved an excellent power conversion efficiency (PCE) of 6.7% and a very high PSC stability in PTB7:PC71BM systems, which constitute a highly comparable PCE and superior device lifetime relative to those of conventional PSCs with poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (
PSS). These results demonstrate that the inexpensive solution-processed PAN polymer can be an attractive
PSS alternative and is more powerful for achieving better cell performances and lower cost PSC production.
Professional Graduate School of Flexible and Printable Electronics, Polymer Materials Fusion Research Center, Chonbuk National University , 664-14 Deokjin-dong, Deokjin-gu, Jeonju-si, Jeollabuk-do 561-756, Republic of Korea.
Yong-Jin
YJ
Noh
Professional Graduate School of Flexible and Printable Electronics, Polymer Materials Fusion Research Center, Chonbuk National University , 664-14 Deokjin-dong, Deokjin-gu, Jeonju-si, Jeollabuk-do 561-756, Republic of Korea.
Sae-Mi
SM
Park
Heeger Center for Advanced Materials (HCAM), School of Material Science and Engineering, Gwangju Insititute of Science and Technology , Gwangju 500-712, Republic of Korea.
Jun-Seok
JS
Yeo
Heeger Center for Advanced Materials (HCAM), School of Material Science and Engineering, Gwangju Insititute of Science and Technology , Gwangju 500-712, Republic of Korea.
Dong-Yu
DY
Kim
Department of Nano and Chemical Engineering, Kunsan National University , Kunsan, Jeollabuk-do 753-701, Republic of Korea.
Seok-Soon
SS
Kim
Professional Graduate School of Flexible and Printable Electronics, Polymer Materials Fusion Research Center, Chonbuk National University , 664-14 Deokjin-dong, Deokjin-gu, Jeonju-si, Jeollabuk-do 561-756, Republic of Korea.
Seok-In
SI
Na
anode interfacial layer; bulk heterojunction; polyacrylonitrile; polymer solar cells; polymeric interlayer; work-function modification