Effects of Germanium Tetrabromide Addition to Zinc Tetraphenyl Porphyrin / Fullerene Bulk Heterojunction Solar Cells

Electronics

Atsushi Suzuki¹  Kenta Nishimura² 

[1] Department of Materials Science, The University of Shiga Prefecture, 2500 Hassaka, Hikone, Shiga 522-8533, Japan;

关键词: porphyrin;    fullerene;    organic solar cell;    X-ray diffraction;    transmission electron microscopy;   

DOI  :  10.3390/electronics3010112

来源: mdpi

【 摘 要 】

The effects of germanium tetrabromide addition to tetraphenyl porphyrin zinc (Zn-TPP)/fullerene (C₆₀) bulk heterojunction solar cells were characterized. The light-induced charge separation and charge transfer were investigated by current density and optical absorption. Addition of germanium tetrabromide inserted into active layer of Zn-TPP/C₆₀ as bulk heterojunction had a positive effect on the photovoltaic and optical properties. The photovoltaic mechanism of the solar cells was discussed by experimental results. The photovoltaic performance was due to light-induced exciton promoted by insert of GeBr₄ and charge transfer from HOMO of Zn-TPP to LUMO of C₆₀ in the active layer.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.