Effect of electric field on the spray deposited poly (3,4- ethylenedioxythiophene): Poly(styrenesulfonate) layer and its use in organic solar cell

Neha Chaturvedi, Firoz Alam, Sanjay Kumar Swami, Viresh Dutta

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Spray process under different applied voltages (0 V to 700 V) is used for the deposition of poly (3, 4-ethylenedioxythiophene): poly (styrenesulfonate) (PEDOT:PSS) hole transport layer (HTL). The deposition of PEDOT:PSS film by spray process under the effect of electric field results in smoother film morphology, increase in conductivity and reduction in the sheet resistance. The improvement in surface morphology and conductivity enhancement of PEDOT: PSS films are the key to the improvement in the J-V characteristics of ITO/PEDOT:PSS/P3HT:PCBM/Al solar cell structures. The XPS peak height for PEDOT at 164.4 eV increased by 47% and that for PSS at 169.0 eV decreased by 30%, showing that the enhancement in the conductivity of the films deposited under electric field is due to the change in the PEDOT: PSS ratio. The organic solar cell using the electric field (created using 700 V) assisted spray deposited PEDOT:PSS film exhibit 42% and 69% improvement in the short circuit current density(Jsc) and power conversion efficiency, respectively, in comparison to the cells having PEDOT:PSS films deposited without the electric field.

Original languageEnglish
Article number184501
JournalJournal of Applied Physics
Volume114
Issue number18
DOIs
StatePublished - 14 Nov 2013
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (all)

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