Area and light intensity dependence of buffer layers on P3HT: PCBM solar cells

Journal Article (Journal Article)

Polymer solar cells have been fabricated with buffer layers to enhance the charge extraction toward the electrodes. We investigated the active area and the light intensity dependences in poly (3-hexylthiophene) (P3HT):[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) bulk heterojunction solar cells with different hole buffer layers, molybdenum oxide (MoO3) and poly(3,4- ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT: PSS). The short-circuit current (JSC) for the MoO3-based device is nearly independent of the active area and the light intensity whereas the JSC and light intensity dependence for PEDOT: PSS-based device are strongly affected by the active areas below 20 mm2. These dependences on the active area and the light intensity can be explained by the lateral conductivity characteristics of the hole buffer layers, and compared to PEDOT: PSS, MoO3 can provide efficient and stable hole extraction regardless of active area and light intensity.

Full Text

Duke Authors

Cited Authors

  • Noh, S; Lee, D; Kim, JY; Park, Y; Lee, C; Amsden, JJ

Published Date

  • August 12, 2011

Published In

Volume / Issue

  • 59 / 2

Start / End Page

  • 207 - 210

International Standard Serial Number (ISSN)

  • 0374-4884

Digital Object Identifier (DOI)

  • 10.3938/jkps.59.207

Citation Source

  • Scopus