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

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.

Keywords

PhotocurrentEnergy conversion efficiencyMaterials scienceDye-sensitized solar cellHeterojunctionOptoelectronicsPhotovoltaic systemMolar absorptivitySolar cellUltrafast laser spectroscopyPhotochemistryChemistrySpectroscopyOpticsElectrodePhysical chemistryElectrolyte

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Publication Info

Year: 2011
Type: article
Volume: 11
Issue: 4
Pages: 1452-1456
Citations: 328
Access: Closed

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APA Style

                            
                                
                                    Ning Cai, 
                                
                                    Soo‐Jin Moon, 
                                
                                    Lê Cevey-Ha
                                
                                et al.
                            
                            (2011). 
                            An Organic D-π-A Dye for Record Efficiency Solid-State Sensitized Heterojunction Solar Cells. 
                            Nano Letters
                            , 11
                            (4)
                            , 1452-1456.
                            https://doi.org/10.1021/nl104034e
                        

Identifiers

DOI: 10.1021/nl104034e