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

Altuğ Mert Sevim; Soner Çakar; Mahmut Özacar; Ahmet Gül

doi:10.1016/j.solener.2017.12.001

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

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

43 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 language	English
Pages (from-to)	18-24
Number of pages	7
Journal	Solar Energy
Volume	160
DOIs	https://doi.org/10.1016/j.solener.2017.12.001
Publication status	Published - 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.

Funders	Funder number
Türkiye Bilimler Akademisi
Istanbul Teknik Üniversitesi

Keywords

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

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.solener.2017.12.001

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title = "Electrochemical and photovoltaic properties of highly efficient solar cells with cobalt/zinc phthalocyanine sensitizers",

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.",

keywords = "Dye sensitized solar cells, Electrochemical impedance spectroscopy, Metal complex dyes, Phthalocyanines, Square wave voltammetry",

author = "Sevim, {Altuğ Mert} and Soner {\c C}akar and Mahmut {\"O}zacar and Ahmet G{\"u}l",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2018",

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day = "15",

doi = "10.1016/j.solener.2017.12.001",

language = "English",

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T1 - Electrochemical and photovoltaic properties of highly efficient solar cells with cobalt/zinc phthalocyanine sensitizers

AU - Sevim, Altuğ Mert

AU - Çakar, Soner

AU - Özacar, Mahmut

AU - Gül, Ahmet

PY - 2018/1/15

Y1 - 2018/1/15

N2 - 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.

AB - 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.

KW - Dye sensitized solar cells

KW - Electrochemical impedance spectroscopy

KW - Metal complex dyes

KW - Phthalocyanines

KW - Square wave voltammetry

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DO - 10.1016/j.solener.2017.12.001

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SN - 0038-092X

VL - 160

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JO - Solar Energy

JF - Solar Energy

ER -

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

Abstract

Bibliographical note

Funding

Keywords

UN SDGs

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