Efficient Organic p-i-n Solar Cells Having Very Thick Codeposited i-Layer Consisting of Highly Purified Organic Semiconductors

Abstract

p-i-n organic solar cells having very thick codeposited i-interlayer reaching 1.2 μm were successfully fabricated by using fullerene purified by means of the single-crystal formed sublimation. Short-circuit photocurrent density of 19 mAcm⁻² and photo-electric conversion efficiency of 5.3% were observed.

Keywords:

• fullerene
• organic p-i-n solar cells
• photo-electric conversion efficiency of 5.3%
• single-crystal formed sublimation
• very thick codeposited i-interlayer

Acknowledgments

We are very grateful to M. Izaki and T. Ohno of Osaka Municipal Technical Research Institute for SIMS measurements.