| Summary: | In this paper, the fabrication and characterization of CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> perovskite solar cells using decaphenylpentacyclosilane, copper phthalocyanine complex (CuPc) doped with tetracyanoquinodimethane (TCNQ), was performed. The effects of a carboxylic acid, amino, or sulfonic acid sodium salt group, substituted with CuPc doped with TCNQ, on photovoltaic properties was investigated to improve carrier generation and diffusion related to short-circuit current density. The incorporation of carboxylic acid or amino, substituted with CuPc doped with TCNQ, would optimize the tuning energy levels of the valence band, promoting charge transfer and diffusion with a suppressing trap near the interface in the hole-transporting layer.
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