N,N′-Bis((6-methoxylpyridin-2-yl)methylene)-p-phenylenediimine based d10 transition metal complexes and their utilization in co-sensitized solar cells

Liguo Wei, Yulin Yang, Ruiqing Fan, Yong Na, Ping Wang, Yuwei Dong, Bin Yang, Wenwu Cao

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

N,N′-Bis((6-methoxylpyridin-2-yl)methylene)-p-phenylenediimine based four-coordinated d10 transition metal complexes (named ML, M = Zn, Cd, Hg) were synthesized and employed as co-sensitizers and co-adsorbents in combination with a ruthenium complex N719 in dye sensitized solar cells. After co-sensitization, not only the incident-photon-to-current conversion efficiency is enhanced but also the dark current is reduced. A short circuit current density of 14.46 mA cm-2, an open circuit voltage of 0.74 V and a fill factor of 0.62 corresponding to an overall conversion efficiency of 6.65% under AM 1.5 G solar irradiation were achieved when ZnL was used as a co-sensitizer, which are much higher than that for DSSCs only sensitized by N719 (5.22%) under the same conditions. The improvement in efficiency is attributed to the fact that N,N′-bis((6-methoxylpyridin-2-yl)methylene)-p- phenylenediimine coordinated complexes overcome the deficiency of N719 absorption in the low wavelength region of the visible spectrum, prevent its aggregation, offset competitive visible light absorption of I3 - and reduce charge recombination due to formation of an effective cover layer of the dye molecules on the TiO2 surface. As a result, the synthesized complexes are promising candidates as co-adsorbents and co-sensitizers for highly efficient DSSCs. This journal is

Original languageEnglish (US)
Pages (from-to)11361-11370
Number of pages10
JournalDalton Transactions
Volume43
Issue number29
DOIs
StatePublished - Aug 7 2014

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Coordination Complexes
Adsorbents
Conversion efficiency
Transition metals
Solar cells
Ruthenium
Dark currents
Open circuit voltage
Short circuit currents
Light absorption
Coloring Agents
Current density
Agglomeration
Photons
Irradiation
Wavelength
Molecules
phenyldiazene
Dye-sensitized solar cells

All Science Journal Classification (ASJC) codes

  • Inorganic Chemistry

Cite this

Wei, Liguo ; Yang, Yulin ; Fan, Ruiqing ; Na, Yong ; Wang, Ping ; Dong, Yuwei ; Yang, Bin ; Cao, Wenwu. / N,N′-Bis((6-methoxylpyridin-2-yl)methylene)-p-phenylenediimine based d10 transition metal complexes and their utilization in co-sensitized solar cells. In: Dalton Transactions. 2014 ; Vol. 43, No. 29. pp. 11361-11370.
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N,N′-Bis((6-methoxylpyridin-2-yl)methylene)-p-phenylenediimine based d10 transition metal complexes and their utilization in co-sensitized solar cells. / Wei, Liguo; Yang, Yulin; Fan, Ruiqing; Na, Yong; Wang, Ping; Dong, Yuwei; Yang, Bin; Cao, Wenwu.

In: Dalton Transactions, Vol. 43, No. 29, 07.08.2014, p. 11361-11370.

Research output: Contribution to journalArticle

TY - JOUR

T1 - N,N′-Bis((6-methoxylpyridin-2-yl)methylene)-p-phenylenediimine based d10 transition metal complexes and their utilization in co-sensitized solar cells

AU - Wei, Liguo

AU - Yang, Yulin

AU - Fan, Ruiqing

AU - Na, Yong

AU - Wang, Ping

AU - Dong, Yuwei

AU - Yang, Bin

AU - Cao, Wenwu

PY - 2014/8/7

Y1 - 2014/8/7

N2 - N,N′-Bis((6-methoxylpyridin-2-yl)methylene)-p-phenylenediimine based four-coordinated d10 transition metal complexes (named ML, M = Zn, Cd, Hg) were synthesized and employed as co-sensitizers and co-adsorbents in combination with a ruthenium complex N719 in dye sensitized solar cells. After co-sensitization, not only the incident-photon-to-current conversion efficiency is enhanced but also the dark current is reduced. A short circuit current density of 14.46 mA cm-2, an open circuit voltage of 0.74 V and a fill factor of 0.62 corresponding to an overall conversion efficiency of 6.65% under AM 1.5 G solar irradiation were achieved when ZnL was used as a co-sensitizer, which are much higher than that for DSSCs only sensitized by N719 (5.22%) under the same conditions. The improvement in efficiency is attributed to the fact that N,N′-bis((6-methoxylpyridin-2-yl)methylene)-p- phenylenediimine coordinated complexes overcome the deficiency of N719 absorption in the low wavelength region of the visible spectrum, prevent its aggregation, offset competitive visible light absorption of I3 - and reduce charge recombination due to formation of an effective cover layer of the dye molecules on the TiO2 surface. As a result, the synthesized complexes are promising candidates as co-adsorbents and co-sensitizers for highly efficient DSSCs. This journal is

AB - N,N′-Bis((6-methoxylpyridin-2-yl)methylene)-p-phenylenediimine based four-coordinated d10 transition metal complexes (named ML, M = Zn, Cd, Hg) were synthesized and employed as co-sensitizers and co-adsorbents in combination with a ruthenium complex N719 in dye sensitized solar cells. After co-sensitization, not only the incident-photon-to-current conversion efficiency is enhanced but also the dark current is reduced. A short circuit current density of 14.46 mA cm-2, an open circuit voltage of 0.74 V and a fill factor of 0.62 corresponding to an overall conversion efficiency of 6.65% under AM 1.5 G solar irradiation were achieved when ZnL was used as a co-sensitizer, which are much higher than that for DSSCs only sensitized by N719 (5.22%) under the same conditions. The improvement in efficiency is attributed to the fact that N,N′-bis((6-methoxylpyridin-2-yl)methylene)-p- phenylenediimine coordinated complexes overcome the deficiency of N719 absorption in the low wavelength region of the visible spectrum, prevent its aggregation, offset competitive visible light absorption of I3 - and reduce charge recombination due to formation of an effective cover layer of the dye molecules on the TiO2 surface. As a result, the synthesized complexes are promising candidates as co-adsorbents and co-sensitizers for highly efficient DSSCs. This journal is

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DO - 10.1039/c4dt00437j

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