Controlled growth of ZnPc thin films for photovoltaic applications

Ying Zhou, Tetsuya Taima, Yosei Shibata, Tetsuhiko Miyadera, Toshihiro Yamanari, Yuji Yoshida

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)

Abstract

The growth of ultra-high-vacuum evaporated ZnPc films was discussed in detail. The effects of growth rate and substrate temperature on the film morphology are investigated by atomic force microscopy. It is clear that growth conditions play a very important role in the surface morphology. High substrate temperature leads to the formation of larger grain. The relationship between ZnPc morphology and organic photovoltaic properties is discussed. PCE of the device using ZnPc grown at 90 °C and 0.12 Å/s is enhanced by a factor of 71% relative to the device using ZnPc grown at 0.02 Å/s. Moreover, the devices prepared at room temperature exhibit relatively higher PCE due to the significant improvements in photocurrent, open-circuit voltage. These results directly imply that controlled growth of the organic films plays a crucial role in further improving the device performances.

Original languageEnglish
Pages (from-to)221-225
Number of pages5
JournalPhysics Procedia
Volume14
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event9th International Conference on Nano-Molecular Electronics, ICNME 2010 - Kobe, Japan
Duration: 2010 Dec 142010 Dec 16

Keywords

  • Organic photovoltaic
  • Surface morphology
  • Vacuum evaporation
  • ZnPc thin film

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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