Enhanced performance and stability of polymer BHJ photovoltaic devices from dry transfer of PEDOT:PSS

Jung Kyu Kim, Insun Park, Wanjung Kim, Dong Hwan Wang, Dae Geun Choi, Yeong Suk Choi, Jong Hyeok Park

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Polymer solar cells with enhanced initial cell performances and long-term stability were fabricated by performing a simple dry transfer of a hole extraction layer [poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)] onto an indium tin oxide (ITO) substrate. Due to the very flat surface of the polyurethane acrylate/polycarbonate (PUA/PC) film, which was used as a mold and resembled the surface of the original substrate (silicon wafer), the transferred layer had a very smooth surface morphology, resulting in enhancement of the interfacial characteristics. The work function of the PEDOT:PSS layer and the morphology of bulk hetero junction (BHJ) layer were tuned by controlling the position of PSS enrichment in the PEDOT:PSS layer using the dry transfer. The power conversion efficiency of PTB7:PC71BM BHJ device prepared by the dry transfer was 8.06 %, which was significantly higher than that of the spin-cast device (7.32 %). By avoiding direct contact between the ITO substrate and the PEDOT:PSS solution in the dry transfer system, etching and diffusion of indium in the ITO substrate were greatly reduced, thereby improving the stability. Smoothing it over with a stamp: Bulk-heterojunction polymer solar cells with enhanced device performances and a long-term stability are fabricated using a simple dry transfer method. Due to the reverse poly(styrenesulfonate) (PSS)-enriched region in the transferred poly(3,4-ethylenedioxythiophene (PEDOT):PSS layer, its work function and morphology can be tuned. Furthermore, by avoiding direct contact between substrate and PEDOT:PSS solution, the stability is improved.

Original languageEnglish
Pages (from-to)1957-1963
Number of pages7
JournalChemSusChem
Volume7
Issue number7
DOIs
Publication statusPublished - 2014 Jan 1

Fingerprint

indium
Polymers
polymer
Indium
Tin oxides
substrate
Substrates
tin
polycarbonate
oxide
Polyurethanes
Polycarbonates
Silicon wafers
etching
Contacts (fluid mechanics)
Conversion efficiency
Surface morphology
Heterojunctions
Etching
smoothing

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Chemical Engineering(all)
  • Materials Science(all)
  • Energy(all)

Cite this

Kim, Jung Kyu ; Park, Insun ; Kim, Wanjung ; Wang, Dong Hwan ; Choi, Dae Geun ; Choi, Yeong Suk ; Park, Jong Hyeok. / Enhanced performance and stability of polymer BHJ photovoltaic devices from dry transfer of PEDOT:PSS. In: ChemSusChem. 2014 ; Vol. 7, No. 7. pp. 1957-1963.
@article{d07bc14fcf624011b8bdc801c5eabda6,
title = "Enhanced performance and stability of polymer BHJ photovoltaic devices from dry transfer of PEDOT:PSS",
abstract = "Polymer solar cells with enhanced initial cell performances and long-term stability were fabricated by performing a simple dry transfer of a hole extraction layer [poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)] onto an indium tin oxide (ITO) substrate. Due to the very flat surface of the polyurethane acrylate/polycarbonate (PUA/PC) film, which was used as a mold and resembled the surface of the original substrate (silicon wafer), the transferred layer had a very smooth surface morphology, resulting in enhancement of the interfacial characteristics. The work function of the PEDOT:PSS layer and the morphology of bulk hetero junction (BHJ) layer were tuned by controlling the position of PSS enrichment in the PEDOT:PSS layer using the dry transfer. The power conversion efficiency of PTB7:PC71BM BHJ device prepared by the dry transfer was 8.06 {\%}, which was significantly higher than that of the spin-cast device (7.32 {\%}). By avoiding direct contact between the ITO substrate and the PEDOT:PSS solution in the dry transfer system, etching and diffusion of indium in the ITO substrate were greatly reduced, thereby improving the stability. Smoothing it over with a stamp: Bulk-heterojunction polymer solar cells with enhanced device performances and a long-term stability are fabricated using a simple dry transfer method. Due to the reverse poly(styrenesulfonate) (PSS)-enriched region in the transferred poly(3,4-ethylenedioxythiophene (PEDOT):PSS layer, its work function and morphology can be tuned. Furthermore, by avoiding direct contact between substrate and PEDOT:PSS solution, the stability is improved.",
author = "Kim, {Jung Kyu} and Insun Park and Wanjung Kim and Wang, {Dong Hwan} and Choi, {Dae Geun} and Choi, {Yeong Suk} and Park, {Jong Hyeok}",
year = "2014",
month = "1",
day = "1",
doi = "10.1002/cssc.201400022",
language = "English",
volume = "7",
pages = "1957--1963",
journal = "ChemSusChem",
issn = "1864-5631",
publisher = "Wiley-VCH Verlag",
number = "7",

}

Enhanced performance and stability of polymer BHJ photovoltaic devices from dry transfer of PEDOT:PSS. / Kim, Jung Kyu; Park, Insun; Kim, Wanjung; Wang, Dong Hwan; Choi, Dae Geun; Choi, Yeong Suk; Park, Jong Hyeok.

In: ChemSusChem, Vol. 7, No. 7, 01.01.2014, p. 1957-1963.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Enhanced performance and stability of polymer BHJ photovoltaic devices from dry transfer of PEDOT:PSS

AU - Kim, Jung Kyu

AU - Park, Insun

AU - Kim, Wanjung

AU - Wang, Dong Hwan

AU - Choi, Dae Geun

AU - Choi, Yeong Suk

AU - Park, Jong Hyeok

PY - 2014/1/1

Y1 - 2014/1/1

N2 - Polymer solar cells with enhanced initial cell performances and long-term stability were fabricated by performing a simple dry transfer of a hole extraction layer [poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)] onto an indium tin oxide (ITO) substrate. Due to the very flat surface of the polyurethane acrylate/polycarbonate (PUA/PC) film, which was used as a mold and resembled the surface of the original substrate (silicon wafer), the transferred layer had a very smooth surface morphology, resulting in enhancement of the interfacial characteristics. The work function of the PEDOT:PSS layer and the morphology of bulk hetero junction (BHJ) layer were tuned by controlling the position of PSS enrichment in the PEDOT:PSS layer using the dry transfer. The power conversion efficiency of PTB7:PC71BM BHJ device prepared by the dry transfer was 8.06 %, which was significantly higher than that of the spin-cast device (7.32 %). By avoiding direct contact between the ITO substrate and the PEDOT:PSS solution in the dry transfer system, etching and diffusion of indium in the ITO substrate were greatly reduced, thereby improving the stability. Smoothing it over with a stamp: Bulk-heterojunction polymer solar cells with enhanced device performances and a long-term stability are fabricated using a simple dry transfer method. Due to the reverse poly(styrenesulfonate) (PSS)-enriched region in the transferred poly(3,4-ethylenedioxythiophene (PEDOT):PSS layer, its work function and morphology can be tuned. Furthermore, by avoiding direct contact between substrate and PEDOT:PSS solution, the stability is improved.

AB - Polymer solar cells with enhanced initial cell performances and long-term stability were fabricated by performing a simple dry transfer of a hole extraction layer [poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)] onto an indium tin oxide (ITO) substrate. Due to the very flat surface of the polyurethane acrylate/polycarbonate (PUA/PC) film, which was used as a mold and resembled the surface of the original substrate (silicon wafer), the transferred layer had a very smooth surface morphology, resulting in enhancement of the interfacial characteristics. The work function of the PEDOT:PSS layer and the morphology of bulk hetero junction (BHJ) layer were tuned by controlling the position of PSS enrichment in the PEDOT:PSS layer using the dry transfer. The power conversion efficiency of PTB7:PC71BM BHJ device prepared by the dry transfer was 8.06 %, which was significantly higher than that of the spin-cast device (7.32 %). By avoiding direct contact between the ITO substrate and the PEDOT:PSS solution in the dry transfer system, etching and diffusion of indium in the ITO substrate were greatly reduced, thereby improving the stability. Smoothing it over with a stamp: Bulk-heterojunction polymer solar cells with enhanced device performances and a long-term stability are fabricated using a simple dry transfer method. Due to the reverse poly(styrenesulfonate) (PSS)-enriched region in the transferred poly(3,4-ethylenedioxythiophene (PEDOT):PSS layer, its work function and morphology can be tuned. Furthermore, by avoiding direct contact between substrate and PEDOT:PSS solution, the stability is improved.

UR - http://www.scopus.com/inward/record.url?scp=84907719397&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84907719397&partnerID=8YFLogxK

U2 - 10.1002/cssc.201400022

DO - 10.1002/cssc.201400022

M3 - Article

C2 - 24989323

AN - SCOPUS:84907719397

VL - 7

SP - 1957

EP - 1963

JO - ChemSusChem

JF - ChemSusChem

SN - 1864-5631

IS - 7

ER -