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ISSN 1998-9539

Photovoltaic Effect in Isotype Phthalocyanine Heterojunctions

Andrey I. Koptyaev,a Mahmud Khamdoush,a Anton N. Fedoseev,b Vlad V. Travkin,b and Georgy L. Pakhomova,b@
aInstitute of Macroheterocycles, Ivanovo State University of Chemistry and Technology (ISUCT), 153000 Ivanovo, Russian Federation
bInstitute for Physics of Microstructures of the Russian Academy of Sciences (IPM RAS), Nizhny 603950 Novgorod, Russian Federation
@Corresponding author E-mail: pakhomov@ipmras.ru
 
DOI: 10.6060/mhc181114p
 
The J-V characteristics of planar heterojunctions consisting of molecular semiconductors, tin (or lead) phthalocyanine and boron chloride subphphalocyanine SubPc, are obtained. While almost non-rectifying in the dark, the illuminated junctions show an unexpectedly significant photovoltaic effect (0.4 V). The sign of the photovoltage is also different from what is expected considering the donor/acceptor properties of paired compounds. This observation should be taken into account when introducing phthalocyanines in multilayer photovoltaic cells as buffers or cascade components.
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