Improvement of quantum efficiency of P3HT:PCBM-based organic photovoltaic cells using DMDCNQI as an N-type dopant and buffer layer

Joo Hyung Lee; Eui Yeol Yang; Se Young Oh

doi:10.1166/jnn.2013.6991

Improvement of quantum efficiency of P3HT:PCBM-based organic photovoltaic cells using DMDCNQI as an N-type dopant and buffer layer

J Nanosci Nanotechnol. 2013 Mar;13(3):2012-5. doi: 10.1166/jnn.2013.6991.

Authors

Joo Hyung Lee¹, Eui Yeol Yang, Se Young Oh

Affiliation

¹ Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 121-742, Republic of Korea.

PMID: 23755640
DOI: 10.1166/jnn.2013.6991

Abstract

In previous work, we have reported that a P3HT:PCBM-based organic photovoltaic cell using a thermally evaporated DMDCNQI buffer layer shows a high power conversion efficiency. In the present work, we have fabricated organic photovoltaic cells consisting of ITO/PEDOT:PSS/P3HT:PCBM:DMDCNQI/DMDCNQI/Al using an all-solution process. A thin, uniform DMDCNQI film was obtained in a methanol solution with high solubility and low viscosity. The prepared device shows a high power conversion efficiency of 2.9%. In particular, a maximum external quantum efficiency of 81% was obtained.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Buffers
Quantum Theory*
Spectrophotometry

Substances

Buffers