Work

An Organic D-π-A Dye for Record Efficiency Solid-State Sensitized Heterojunction Solar Cells

Year: 2011

Type: article

Abstract: The high molar absorption coefficient organic D-π-A dye C220 exhibits more than 6% certified electric power conversion efficiency at AM 1.5G solar irradiation (100 mW cm(-2)) in a solid-state dye-sensitized solar cell using 2,2',7,7'-tetrakis(N,N-dimethoxyphenylamine)-9,9'-spirobifluorene (spiro-MeOTAD) as the organic hole-transporting material. This contributes to a new record (6.08% by NREL) for this type of sensitized heterojunction photovoltaic device. Efficient charge generation is proved by incident photon-to-current conversion efficiency spectra. Transient photovoltage and photocurrent decay measurements showed that the enhanced performance achieved with C220 partially stems from the high charge collection efficiency over a wide potential range.

Source: Nano Letters

DOI: 10.1021/nl104034e

Authors: Ning Cai, Soo-Jin Moon, Lê Cevey-Ha, Thomas Moehl, Robin Humphry-Baker, Peng Wang, Shaik M. Zakeeruddin, Michael Grätzel

Institutions: Chinese Academy of Sciences, Changchun Institute of Applied Chemistry, State Key Laboratory of Polymer Physics and Chemistry, École Polytechnique Fédérale de Lausanne

Language: English

Topic: TiO2 Photocatalysis and Solar Cells

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: green

OpenAlex ID: W2128152123

FWCI: 27.62

Cites: 25

Cited by: 340

Related to: 10