Minimization of contact resistance between metal and polymer by surface doping

• Mukherjee, A.K.

• Thakur, A.K.

• Takashima, Wataru

• Kaneto, Keiichi

Abstract

The technique of surface doping is used to reduce the contact resistance between Au and poly(3-hexylthiophen-2,5-diyl) (P3HT) in Au(bottom)/P3HT/Au(top) sandwich type cells. To implement thistechnique, dodecyl benzene sulfonic acid (DBSA) is found to be an effective bulky dopant of P3HT asconfirmed by four probe conductivity measurements, absorption and photoluminescence spectra.Sandwich cells treated with DBSA showed electrical short due to diffusion of DBSA across P3HT filmin Au(bottom)/DBSA/P3HT /DBSA/Au(top) sandwich cells which confirms that DBSA is notimmobilized at the surface. To restrict DBSA primarily at the surface, aqueous solution ofpoly(ethylenedioxy thiophene) stabilized in poly(styrene sulfonic acid) (PEDOT:PSS) is utilized tomake an emulsion with DBSA. The application of this emulsion at the top and bottom Au/P3HTinterface has resulted into a decrease of contact resistance by nearly four orders of magnitude.

Journal

• Journal of physics. D, Applied physics

  Journal of physics. D, Applied physics 40 1789-1793, 2007-03-21

  IOP Publishing

Details

• CRID: 1050564288863110272
• NII Article ID: 120002440705
• NII Book ID: AA00704905
• ISSN: 13616463
• ISSN: 00223727
• HANDLE: 10228/517
• Web Site: https://kyutech.repo.nii.ac.jp/records/273
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • CiNii Articles