Improved open-circuit voltage and efficiency in organic solar cells using a phosphine oxide based interlayer material

  • Soon Ok Jeon
  • , Kyoung Soo Yook
  • , Byung Doo Chin
  • , Yong Sup Park
  • , Jun Yeob Lee

Research output: Contribution to journalArticlepeer-review

Abstract

A spirobenzofluorene based phosphine oxide material (SPPO21) was used as an interlayer between the active layer and electron collecting electrode to improve the device performances of the organic solar cells (OSCs) with poly(3-hexylthiophene): [6,6]-phenyl C61-butyric acid methyl ester active layer. The open-circuit voltage of the OSCs was improved by more than 50% and the power conversion efficiency was improved to 4.4% at the optimal thickness of SPPO21 interlayer (reference was 2.1%). In terms of the open-circuit voltage and efficiency, SPPO21 interlayer was even more effective than LiF.

Original languageEnglish
Pages (from-to)1389-1392
Number of pages4
JournalSolar Energy Materials and Solar Cells
Volume94
Issue number8
DOIs
StatePublished - Aug 2010
Externally publishedYes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • Efficiency
  • Open-circuit voltage
  • Organic solar cell
  • Small molecule interlayer

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