Transient photovoltaic behavior of air-stable, inverted organic solar cells with solution-processed electron transport layer

Chang Su Kim, Stephanie S. Lee, Enrique D. Gomez, Jong Bok Kim, Yueh Lin Loo

Research output: Contribution to journalArticle

138 Scopus citations

Abstract

The short-circuit current density of inverted organic solar cells comprising a solution-processed titania electron transport layer increases with continuous illumination in air and saturates after 10 min. On extended exposure (>2 days), the open-circuit voltage of the devices increases also. The improvement in device characteristics over short time scales is attributed to the filling of shallow electron traps in titania. With an increase in photoconductivity of titania, the short-circuit current increases accordingly. The increase in open-circuit voltage on extended exposure to air is attributed to an increase in the electrostatic field across the diodes when polythiophene is doped by oxygen.

Original languageEnglish (US)
Article number113302
JournalApplied Physics Letters
Volume94
Issue number11
DOIs
StatePublished - Mar 31 2009

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Transient photovoltaic behavior of air-stable, inverted organic solar cells with solution-processed electron transport layer'. Together they form a unique fingerprint.

  • Cite this