Effect of π-Spacer Length in Novel Xanthene-Linked l -(D-π-A)2-Type Dianchoring Dyes for Dye-Sensitized Solar Cells

Bakhytzhan Baptayev; Se Mi Kim; Bexultan Bolatbek; Sang Hee Lee; Mannix P. Balanay

doi:10.1021/acsaem.2c00384

Effect of π-Spacer Length in Novel Xanthene-Linked l -(D-π-A)₂-Type Dianchoring Dyes for Dye-Sensitized Solar Cells

Bakhytzhan Baptayev, Se Mi Kim, Bexultan Bolatbek, Sang Hee Lee, Mannix P. Balanay

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

3 Citations (Scopus)

Abstract

The effect of thiophene π-spacer length was studied in xanthene-linked l-(D-π-A)₂-type dianchoring dye performance in dye-sensitized solar cells. The photophysical, electrochemical, and photovoltaic performances of KS-19 with single thiophene and KS-21 with dithiophene units as π-spacers were compared. The overall result showed that the presence of an extra thiophene unit in KS-21 led to the extension of conjugation, causing broadening and a red-shift of light absorption which in turn resulted in increased J_SCand power conversion efficiency (PCE).

Original language	English
Pages (from-to)	6764-6771
Number of pages	8
Journal	ACS Applied Energy Materials
Volume	5
Issue number	6
DOIs	https://doi.org/10.1021/acsaem.2c00384
Publication status	Published - Jun 27 2022

Keywords

density functional theory
linker
recombination
self-consistent charge density functional tight binding
thiophene

ASJC Scopus subject areas

Chemical Engineering (miscellaneous)
Energy Engineering and Power Technology
Electrochemistry
Materials Chemistry
Electrical and Electronic Engineering

UN SDGs

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

Access to Document

10.1021/acsaem.2c00384

Cite this

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title = "Effect of π-Spacer Length in Novel Xanthene-Linked l -(D-π-A)2-Type Dianchoring Dyes for Dye-Sensitized Solar Cells",

abstract = "The effect of thiophene π-spacer length was studied in xanthene-linked l-(D-π-A)2-type dianchoring dye performance in dye-sensitized solar cells. The photophysical, electrochemical, and photovoltaic performances of KS-19 with single thiophene and KS-21 with dithiophene units as π-spacers were compared. The overall result showed that the presence of an extra thiophene unit in KS-21 led to the extension of conjugation, causing broadening and a red-shift of light absorption which in turn resulted in increased JSCand power conversion efficiency (PCE).",

keywords = "density functional theory, linker, recombination, self-consistent charge density functional tight binding, thiophene",

author = "Bakhytzhan Baptayev and Kim, {Se Mi} and Bexultan Bolatbek and Lee, {Sang Hee} and Balanay, {Mannix P.}",

note = "Funding Information: This work was supported in part by the Faculty Development Competitive Research Grant of Nazarbayev University (Project ref. no. 240919FD3938) and the Ministry of Education and Science of the Republic of Kazakhstan (Grant Funding No. AP09259604). Publisher Copyright: {\textcopyright} 2022 American Chemical Society. All rights reserved.",

year = "2022",

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doi = "10.1021/acsaem.2c00384",

language = "English",

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T1 - Effect of π-Spacer Length in Novel Xanthene-Linked l -(D-π-A)2-Type Dianchoring Dyes for Dye-Sensitized Solar Cells

AU - Baptayev, Bakhytzhan

AU - Kim, Se Mi

AU - Bolatbek, Bexultan

AU - Lee, Sang Hee

AU - Balanay, Mannix P.

N1 - Funding Information: This work was supported in part by the Faculty Development Competitive Research Grant of Nazarbayev University (Project ref. no. 240919FD3938) and the Ministry of Education and Science of the Republic of Kazakhstan (Grant Funding No. AP09259604). Publisher Copyright: © 2022 American Chemical Society. All rights reserved.

PY - 2022/6/27

Y1 - 2022/6/27

N2 - The effect of thiophene π-spacer length was studied in xanthene-linked l-(D-π-A)2-type dianchoring dye performance in dye-sensitized solar cells. The photophysical, electrochemical, and photovoltaic performances of KS-19 with single thiophene and KS-21 with dithiophene units as π-spacers were compared. The overall result showed that the presence of an extra thiophene unit in KS-21 led to the extension of conjugation, causing broadening and a red-shift of light absorption which in turn resulted in increased JSCand power conversion efficiency (PCE).

AB - The effect of thiophene π-spacer length was studied in xanthene-linked l-(D-π-A)2-type dianchoring dye performance in dye-sensitized solar cells. The photophysical, electrochemical, and photovoltaic performances of KS-19 with single thiophene and KS-21 with dithiophene units as π-spacers were compared. The overall result showed that the presence of an extra thiophene unit in KS-21 led to the extension of conjugation, causing broadening and a red-shift of light absorption which in turn resulted in increased JSCand power conversion efficiency (PCE).

KW - density functional theory

KW - linker

KW - recombination

KW - self-consistent charge density functional tight binding

KW - thiophene

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