Electrochemical and photovoltaic properties of highly efficient solar cells with cobalt/zinc phthalocyanine sensitizers

Altuğ Mert Sevim, Soner Çakar, Mahmut Özacar, Ahmet Gül*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

The cyclic voltammetry studies indicated that the HOMO and LUMO energy levels of three sensitized metallophthalocyanines could ensure efficient electron injection and thermodynamically favorable dye regeneration. The S-bridged 4-mercaptobenzoic acid substituted cobalt(II) phthalocyanine (4-MKBa-CoPc) sensitized solar cell devices possessed a short-circuit photocurrent density of 9.70 mA/cm2, an open-circuit voltage of 0.88 V, and a fill factor of 0.49, corresponding to an overall conversion efficiency of 4.18% under standard AM 1.5 sun light. The present results demonstrated that the cobalt(II) phthalocyanine derivative had dramatically higher solar cell efficiency value as compared to zinc(II) phthalocyanine and as a linker atom, instead of oxygen linker, sulfur atoms slightly improved solar cell efficiency. The above results indicated that a low cost sensitizer made up of symmetrically substituted phthalocyanine with an earth abundant metal at the inner core can reach sufficiently high solar cell efficiency when compared with the alternative sensitizers for DSSCs applications.

Original languageEnglish
Pages (from-to)18-24
Number of pages7
JournalSolar Energy
Volume160
DOIs
Publication statusPublished - 15 Jan 2018

Bibliographical note

Publisher Copyright:
© 2017 Elsevier Ltd

Funding

This work was supported by the Research Fund of the Technical University of Istanbul. AG and MÖ thank Turkish Academy of Sciences (TUBA) for partial support. This work was supported by the Research Fund of the Technical University of Istanbul . AG and MÖ thank Turkish Academy of Sciences (TUBA) for partial support.

FundersFunder number
Türkiye Bilimler Akademisi
Istanbul Teknik Üniversitesi

    Keywords

    • Dye sensitized solar cells
    • Electrochemical impedance spectroscopy
    • Metal complex dyes
    • Phthalocyanines
    • Square wave voltammetry

    Fingerprint

    Dive into the research topics of 'Electrochemical and photovoltaic properties of highly efficient solar cells with cobalt/zinc phthalocyanine sensitizers'. Together they form a unique fingerprint.

    Cite this