Journal
ORGANIC ELECTRONICS
Volume 24, Issue -, Pages 73-79Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.orgel.2015.05.019
Keywords
Organic solar cell; P3HT:PCBM; PEDOT:PSS; Metal salt treatment; Electrode modification
Funding
- Ministry of Higher Education and Scientific Research-Babylon University in Iraq
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The effects of metal chlorides such as LiCl, NaCl, CdCl2 and CuCl2 on optical transmittance, electrical conductivity as well as morphology of PEDOT:PSS films have been investigated. Transmittance spectra of spun PEDOT: PSS layers were improved by more than 6% to a maximum of 94% in LiCl doped PEDOT: PSS film. The surface of the PEDOT: PSS films has exhibited higher roughness associated with an increase in the electrical conductivity after doping with metal salts. The improvement in the physical properties of PEDOT: PSS as the hole transport layer proved to be key factors towards enhancing the P3HT:PCBM bulk heterojunction (BHJ) solar cells. These improvements include significantly improved power conversion efficiency with values as high as 6.82% associated with high fill factor (61%) and larger short circuit current density (similar to 18 mA cm(-2)). (C) 2015 Elsevier B.V. All rights reserved.
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