Thermal annealing effects of molybdenum oxide interfacial layer based on organic solar cells

Jinho Baek, Nam Su Kang, Yang Doo Lee, Byung Hyun Kang, Ki Young Dong, Jung Ah Lim, Yong Won Song, Jae Min Hong, Byeong Kwon Ju

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Organic photovoltaic (OPV) cells were fabricated with a molybdenum oxide (MoOx) interfacial layer instead of a PEDOT:PSS layer to improve power conversion efficiency (PCE) and long-term stability. Physical parameters of organic solar cells such as fill factor, current density, and open circuit voltage were changed to improve efficiency by transforming the crystal structure of the molybdenum oxide interfacial layer through thermal annealing. PEDOT:PSS has been known to cause acid etching problems on the ITO which degrades the device's overall longevity. Additionally, we have confirmed that when various thermal annealing conditions were applied to the molybdenum oxide layer, the fill factor and current density were continuously improved. In our experiments, the device with a thermal annealing temperature of 250 °C for 30 minutes exhibited a PCE of 3.18% under AM 1.5G illumination.

Original languageEnglish
Pages (from-to)1775-1780
Number of pages6
JournalScience of Advanced Materials
Issue number11
Publication statusPublished - 2013 Nov


  • Molybdenum oxide
  • Organic photovoltaic
  • Organic solar cell
  • Thermal annealing

ASJC Scopus subject areas

  • General Materials Science


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