High Open-Circuit Voltages: Evidence for a Sensitizer-induced TiO 2 Conduction Band Shift in Ru(II)-Dye Sensitized Solar Cells

Thomas Moehl; Hoi Nok Tsao; Kuan-Lin Wu; Hui-Chu Hsu; Yun Chi; Enrico Ronca; Filippo De Angelis; Mohammad K. Nazeeruddin; Michael Grätzel

doi:10.1021/cm401872q

High Open-Circuit Voltages: Evidence for a Sensitizer-induced TiO ₂ Conduction Band Shift in Ru(II)-Dye Sensitized Solar Cells

Thomas Moehl
, Hoi Nok Tsao
, Kuan-Lin Wu
, Hui-Chu Hsu
, Yun Chi
, Enrico Ronca
, Filippo De Angelis
, Mohammad K. Nazeeruddin
, Michael Grätzel

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

39 Citations (Scopus)

Abstract

Dye-sensitized solar cells (DSC) represent a valuable, efficient, and low-cost alternative to conventional semiconductor photovoltaic devices. A deeper understanding of the interactions at the dye/semiconductor heterointerface is fundamental for future progress in DSC technology. Here we present an interesting heteroleptic ruthenium(II) sensitizer that shifts the conduction band of TiO₂ by 80 mV resulting in high open circuit potential for improved device efficiency.

Original language	English
Pages (from-to)	4497-4502
Journal	Chemistry of Materials
Volume	25
Issue number	22
Online published	1 Nov 2013
DOIs	https://doi.org/10.1021/cm401872q
Publication status	Published - 26 Nov 2013
Externally published	Yes

UN SDGs

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

SDG 7 Affordable and Clean Energy

Research Keywords

DFT
dye dipole
dye sensitized solar cell
impedance spectroscopy
open circuit voltage

Access Output

10.1021/cm401872q

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Cite this

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title = "High Open-Circuit Voltages: Evidence for a Sensitizer-induced TiO 2 Conduction Band Shift in Ru(II)-Dye Sensitized Solar Cells",

abstract = "Dye-sensitized solar cells (DSC) represent a valuable, efficient, and low-cost alternative to conventional semiconductor photovoltaic devices. A deeper understanding of the interactions at the dye/semiconductor heterointerface is fundamental for future progress in DSC technology. Here we present an interesting heteroleptic ruthenium(II) sensitizer that shifts the conduction band of TiO2 by 80 mV resulting in high open circuit potential for improved device efficiency.",

keywords = "DFT, dye dipole, dye sensitized solar cell, impedance spectroscopy, open circuit voltage",

author = "Thomas Moehl and Tsao, \{Hoi Nok\} and Kuan-Lin Wu and Hui-Chu Hsu and Yun Chi and Enrico Ronca and \{De Angelis\}, Filippo and Nazeeruddin, \{Mohammad K.\} and Michael Gr{\"a}tzel",

year = "2013",

month = nov,

day = "26",

doi = "10.1021/cm401872q",

language = "English",

volume = "25",

pages = "4497--4502",

journal = "Chemistry of Materials",

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publisher = "American Chemical Society",

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}

TY - JOUR

T1 - High Open-Circuit Voltages

T2 - Evidence for a Sensitizer-induced TiO 2 Conduction Band Shift in Ru(II)-Dye Sensitized Solar Cells

AU - Moehl, Thomas

AU - Tsao, Hoi Nok

AU - Wu, Kuan-Lin

AU - Hsu, Hui-Chu

AU - Chi, Yun

AU - Ronca, Enrico

AU - De Angelis, Filippo

AU - Nazeeruddin, Mohammad K.

AU - Grätzel, Michael

PY - 2013/11/26

Y1 - 2013/11/26

N2 - Dye-sensitized solar cells (DSC) represent a valuable, efficient, and low-cost alternative to conventional semiconductor photovoltaic devices. A deeper understanding of the interactions at the dye/semiconductor heterointerface is fundamental for future progress in DSC technology. Here we present an interesting heteroleptic ruthenium(II) sensitizer that shifts the conduction band of TiO2 by 80 mV resulting in high open circuit potential for improved device efficiency.

AB - Dye-sensitized solar cells (DSC) represent a valuable, efficient, and low-cost alternative to conventional semiconductor photovoltaic devices. A deeper understanding of the interactions at the dye/semiconductor heterointerface is fundamental for future progress in DSC technology. Here we present an interesting heteroleptic ruthenium(II) sensitizer that shifts the conduction band of TiO2 by 80 mV resulting in high open circuit potential for improved device efficiency.

KW - DFT

KW - dye dipole

KW - dye sensitized solar cell

KW - impedance spectroscopy

KW - open circuit voltage

UR - https://www.scopus.com/pages/publications/84888618967

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84888618967&origin=recordpage

U2 - 10.1021/cm401872q

DO - 10.1021/cm401872q

M3 - RGC 21 - Publication in refereed journal

SN - 0897-4756

VL - 25

SP - 4497

EP - 4502

JO - Chemistry of Materials

JF - Chemistry of Materials

IS - 22

ER -