Layer-by-layer all-transfer-based organic solar cells

Jung Kyu Kim, Wanjung Kim, Dong Hwan Wang, Haksoo Lee, Sung M. Cho, Dae Geun Choi, Jong Hyeok Park

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

For the first time, we describe a novel cost- and time-effective vacuum-free process to fabricate bulk-heterojunction (BHJ) organic photovoltaics (OPVs) via layer-by-layer selective stamping transfer of all layers. By controlling the surface properties of polyurethane acrylate (PUA) stamping molds with ultraviolet (UV)-ozone (UVO) exposure, poly(3,4-ethylenedioxythiophene)/ poly(styrenesulfonate) (PEDOT/PSS), BHJ layer, and metal cathode were uniformly transferred layer by layer onto each of the bottom layers. Among several interfaces between each layer, we found that the interface between the active layer and metal cathode is a critical factor in obtaining conventional device-like efficiency. To enhance the interfacial connectivity between the BHJ layer and metal cathode and increase electron extraction from the BHJ layer, a titanium oxide (TiOx) interlayer was introduced. Cell performance was optimized by controlling the concentration of TiOx solution. The poly(3-hexylthiophene-2,5-diyl)/[6,6]-phenyl-C61-butyric acid methyl ester (P3HT/PC60BM) BHJ device fabricated by transferring PEDOT/PSS, TiOx/active layer, and Al cathode showed 2.01% power conversion efficiency. This efficiency is not comparable to those of conventional OPVs, but our approach shows the possibility of fabricating OPVs via the layer-by-layer transfer method for the first time.

Original languageEnglish
Pages (from-to)5377-5382
Number of pages6
JournalLangmuir
Volume29
Issue number17
DOIs
Publication statusPublished - 2013 Apr 30

Fingerprint

Heterojunctions
solar cells
Titanium oxides
Cathodes
Stamping
Ozone
Metals
heterojunctions
Butyric acid
Polyurethanes
Molds
cathodes
titanium oxides
stamping
Conversion efficiency
Surface properties
Esters
Organic solar cells
Vacuum
ozone

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this

Kim, J. K., Kim, W., Wang, D. H., Lee, H., Cho, S. M., Choi, D. G., & Park, J. H. (2013). Layer-by-layer all-transfer-based organic solar cells. Langmuir, 29(17), 5377-5382. https://doi.org/10.1021/la400137g
Kim, Jung Kyu ; Kim, Wanjung ; Wang, Dong Hwan ; Lee, Haksoo ; Cho, Sung M. ; Choi, Dae Geun ; Park, Jong Hyeok. / Layer-by-layer all-transfer-based organic solar cells. In: Langmuir. 2013 ; Vol. 29, No. 17. pp. 5377-5382.
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Kim, JK, Kim, W, Wang, DH, Lee, H, Cho, SM, Choi, DG & Park, JH 2013, 'Layer-by-layer all-transfer-based organic solar cells', Langmuir, vol. 29, no. 17, pp. 5377-5382. https://doi.org/10.1021/la400137g

Layer-by-layer all-transfer-based organic solar cells. / Kim, Jung Kyu; Kim, Wanjung; Wang, Dong Hwan; Lee, Haksoo; Cho, Sung M.; Choi, Dae Geun; Park, Jong Hyeok.

In: Langmuir, Vol. 29, No. 17, 30.04.2013, p. 5377-5382.

Research output: Contribution to journalArticle

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Kim JK, Kim W, Wang DH, Lee H, Cho SM, Choi DG et al. Layer-by-layer all-transfer-based organic solar cells. Langmuir. 2013 Apr 30;29(17):5377-5382. https://doi.org/10.1021/la400137g