New phenothiazine-based dyes for efficient dye-sensitized solar cells: Positioning effect of a donor group on the cell performance

Yong Hua; Shuai Chang; Hongda Wang; Dandan Huang; Jianzhang Zhao; Tao Chen; Wai Yeung Wong; Rick W K Wong; Xunjin ZHU

doi:10.1016/j.jpowsour.2013.05.157

New phenothiazine-based dyes for efficient dye-sensitized solar cells: Positioning effect of a donor group on the cell performance

Yong Hua, Shuai Chang, Hongda Wang, Dandan Huang, Jianzhang Zhao, Tao Chen, Wai Yeung Wong^*, Rick W K Wong, Xunjin ZHU

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › peer-review

75 Citations (Scopus)

Abstract

Two types of new phenothiazine-based dyes have been developed, in which Type 1 molecules are appended with a donor aryl group at the C(7) position and n-hexyl group at the N(10) of phenothiazine (PT1 and PT2), and Type 2 molecules are with the donor aryl group at the N(10) of phenothiazine (PT3 and PT4), together with a cyanoacrylate moiety at the C(3) position in both types of species. The structural features of a donor aryl group at the C(7) position of phenothiazine extends the π-conjugation of the chromophore, while the donor aryl group at N(10) significantly increases the steric hindrance of the dye due to its mutually perpendicular structural characteristics with either phenyl ring of bent phenothiazine. As a result, Type 1 dyes have better light harvesting properties in contact with TiO₂ films, and give much better dye-sensitized solar cell (DSSC) performance than Type 2 dyes. The PT1-sensitized DSSC shows a high open-circuit voltage (V_oc) of 0.829 V and lead to a final power conversion efficiency of 6.72% based on PT1.

Original language	English
Pages (from-to)	253-259
Number of pages	7
Journal	Journal of Power Sources
Volume	243
DOIs	https://doi.org/10.1016/j.jpowsour.2013.05.157
Publication status	Published - 1 Dec 2013

Scopus Subject Areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

User-Defined Keywords

Dye-sensitized solar cells
Metal-free
Organic dyes
Phenothiazine
Positioning effect

UN SDGs

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

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10.1016/j.jpowsour.2013.05.157

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@article{1be55c8865734e7cbc9858b28e3b0dc7,

title = "New phenothiazine-based dyes for efficient dye-sensitized solar cells: Positioning effect of a donor group on the cell performance",

abstract = "Two types of new phenothiazine-based dyes have been developed, in which Type 1 molecules are appended with a donor aryl group at the C(7) position and n-hexyl group at the N(10) of phenothiazine (PT1 and PT2), and Type 2 molecules are with the donor aryl group at the N(10) of phenothiazine (PT3 and PT4), together with a cyanoacrylate moiety at the C(3) position in both types of species. The structural features of a donor aryl group at the C(7) position of phenothiazine extends the π-conjugation of the chromophore, while the donor aryl group at N(10) significantly increases the steric hindrance of the dye due to its mutually perpendicular structural characteristics with either phenyl ring of bent phenothiazine. As a result, Type 1 dyes have better light harvesting properties in contact with TiO2 films, and give much better dye-sensitized solar cell (DSSC) performance than Type 2 dyes. The PT1-sensitized DSSC shows a high open-circuit voltage (Voc) of 0.829 V and lead to a final power conversion efficiency of 6.72% based on PT1.",

keywords = "Dye-sensitized solar cells, Metal-free, Organic dyes, Phenothiazine, Positioning effect",

author = "Yong Hua and Shuai Chang and Hongda Wang and Dandan Huang and Jianzhang Zhao and Tao Chen and Wong, {Wai Yeung} and Wong, {Rick W K} and Xunjin ZHU",

note = "Funding Information: We thank Hong Kong Research Grants Council ( HKBU202210 , HKBU202811 and HKBU203011 ) and Hong Kong Baptist University ( FRG2/11–12/007 , FRG2/10–11/101 and IRACE/11–12/04 ) for the financial support. W.-K.W. and W.-Y.W. also thank a grant from Areas of Excellence Scheme, University Grants Committee, Hong Kong (Project No. [AoE/P-03/08]). W.-Y.W. thanks the National Natural Science Foundation of China (NSFC) (project number: 21029001) for financial support. X.Z. also thanks the financial support from The Science, Technology and Innovation Committee of Shenzhen Municipality ( JCYJ20120615155451326 ). T. C acknowledges the final support from the CUHK Group Research Scheme and CUHK Focused Scheme B Grant “Center for Solar Energy Research” . ",

year = "2013",

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doi = "10.1016/j.jpowsour.2013.05.157",

language = "English",

volume = "243",

pages = "253--259",

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T1 - New phenothiazine-based dyes for efficient dye-sensitized solar cells

T2 - Positioning effect of a donor group on the cell performance

AU - Hua, Yong

AU - Chang, Shuai

AU - Wang, Hongda

AU - Huang, Dandan

AU - Zhao, Jianzhang

AU - Chen, Tao

AU - Wong, Wai Yeung

AU - Wong, Rick W K

AU - ZHU, Xunjin

N1 - Funding Information: We thank Hong Kong Research Grants Council ( HKBU202210 , HKBU202811 and HKBU203011 ) and Hong Kong Baptist University ( FRG2/11–12/007 , FRG2/10–11/101 and IRACE/11–12/04 ) for the financial support. W.-K.W. and W.-Y.W. also thank a grant from Areas of Excellence Scheme, University Grants Committee, Hong Kong (Project No. [AoE/P-03/08]). W.-Y.W. thanks the National Natural Science Foundation of China (NSFC) (project number: 21029001) for financial support. X.Z. also thanks the financial support from The Science, Technology and Innovation Committee of Shenzhen Municipality ( JCYJ20120615155451326 ). T. C acknowledges the final support from the CUHK Group Research Scheme and CUHK Focused Scheme B Grant “Center for Solar Energy Research” .

PY - 2013/12/1

Y1 - 2013/12/1

N2 - Two types of new phenothiazine-based dyes have been developed, in which Type 1 molecules are appended with a donor aryl group at the C(7) position and n-hexyl group at the N(10) of phenothiazine (PT1 and PT2), and Type 2 molecules are with the donor aryl group at the N(10) of phenothiazine (PT3 and PT4), together with a cyanoacrylate moiety at the C(3) position in both types of species. The structural features of a donor aryl group at the C(7) position of phenothiazine extends the π-conjugation of the chromophore, while the donor aryl group at N(10) significantly increases the steric hindrance of the dye due to its mutually perpendicular structural characteristics with either phenyl ring of bent phenothiazine. As a result, Type 1 dyes have better light harvesting properties in contact with TiO2 films, and give much better dye-sensitized solar cell (DSSC) performance than Type 2 dyes. The PT1-sensitized DSSC shows a high open-circuit voltage (Voc) of 0.829 V and lead to a final power conversion efficiency of 6.72% based on PT1.

AB - Two types of new phenothiazine-based dyes have been developed, in which Type 1 molecules are appended with a donor aryl group at the C(7) position and n-hexyl group at the N(10) of phenothiazine (PT1 and PT2), and Type 2 molecules are with the donor aryl group at the N(10) of phenothiazine (PT3 and PT4), together with a cyanoacrylate moiety at the C(3) position in both types of species. The structural features of a donor aryl group at the C(7) position of phenothiazine extends the π-conjugation of the chromophore, while the donor aryl group at N(10) significantly increases the steric hindrance of the dye due to its mutually perpendicular structural characteristics with either phenyl ring of bent phenothiazine. As a result, Type 1 dyes have better light harvesting properties in contact with TiO2 films, and give much better dye-sensitized solar cell (DSSC) performance than Type 2 dyes. The PT1-sensitized DSSC shows a high open-circuit voltage (Voc) of 0.829 V and lead to a final power conversion efficiency of 6.72% based on PT1.

KW - Dye-sensitized solar cells

KW - Metal-free

KW - Organic dyes

KW - Phenothiazine

KW - Positioning effect

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DO - 10.1016/j.jpowsour.2013.05.157

M3 - Journal article

AN - SCOPUS:84879678294

SN - 0378-7753

VL - 243

SP - 253

EP - 259

JO - Journal of Power Sources

JF - Journal of Power Sources

ER -

New phenothiazine-based dyes for efficient dye-sensitized solar cells: Positioning effect of a donor group on the cell performance

Abstract

Scopus Subject Areas

User-Defined Keywords

UN SDGs

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