High-performance of PEDOT/PSS free organic solar cells on an air-plasma-treated ITO substrate

Jong Kil Choi, Ming Liang Jin, Cheng Jin An, Daewoo Kim, Hee Tae Jung

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

In this work, we demonstrate the high-performance of a PEDOT:PSS free organic photovoltaic cell (OPVC) using an air-plasma modified ITO surface, followed by controlled solvent evaporation and annealing of the P3HT:PCBM photoactive layer. Ultraviolet photoelectron spectroscopy (UPS), X-ray photoelectron spectroscopy (XPS), and conductive atomic force microscopy (c-AFM) results show that the work function of ITO was increased to as high as that of PEDOT:PSS (5.2 eV) after air-plasma treatment, along with significantly enhanced electrical homogeneity. From the dynamic secondary ion mass spectroscopy (DSIMS) results, we confirm that the thermodynamic stability of the slow-dried active layer is attributed to the uniform vertical compositional distribution on the air plasma treated ITO surface, even after thermal annealing at 150 °C for 10 min. The resulting device has an open-circuit voltage of 0.65 V, a fill factor of 63%, and a power conversion efficiency of 3.38%, providing a high performance PEDOT:PSS free OPVC device.

Original languageEnglish
Pages (from-to)11047-11053
Number of pages7
JournalACS Applied Materials and Interfaces
Volume6
Issue number14
DOIs
Publication statusPublished - 2014 Jul 23

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Photovoltaic cells
Plasmas
Substrates
Air
Annealing
Ultraviolet photoelectron spectroscopy
Open circuit voltage
Conversion efficiency
Atomic force microscopy
Evaporation
Thermodynamic stability
X ray photoelectron spectroscopy
Spectroscopy
Ions
Organic solar cells
poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Choi, Jong Kil ; Jin, Ming Liang ; An, Cheng Jin ; Kim, Daewoo ; Jung, Hee Tae. / High-performance of PEDOT/PSS free organic solar cells on an air-plasma-treated ITO substrate. In: ACS Applied Materials and Interfaces. 2014 ; Vol. 6, No. 14. pp. 11047-11053.
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High-performance of PEDOT/PSS free organic solar cells on an air-plasma-treated ITO substrate. / Choi, Jong Kil; Jin, Ming Liang; An, Cheng Jin; Kim, Daewoo; Jung, Hee Tae.

In: ACS Applied Materials and Interfaces, Vol. 6, No. 14, 23.07.2014, p. 11047-11053.

Research output: Contribution to journalArticle

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