Efficient azobenzene co-sensitizer for wide spectral absorption of dye-sensitized solar cells.

ABSTRACT: Two azobenzene dyes, [Cu(azobenzene-4,4'-dicarboxylate) diethylenediamine] _n (ADD), [Cd(4,4'-diazenediyldibenzoato)(H₂O)] _n (DDB), have been designed, synthesized, and characterized as efficient co-sensitizers for dye-sensitized solar cells (DSSC). The optical, charge-transfer, electrochemical and photovoltaic properties of ADD and DDB are investigated by UV-visible spectroscopy, transient surface photovoltage measurement, cyclic voltammetry, and photocurrent-photovoltage measurement. The combination of ADD and DDB in DSSC leads to a wide spectral absorption over the whole visible range (350-700 nm). DSSC with ADD and DDB exhibits a short-circuit photocurrent density as high as 16.96 mA cm^-2, open-circuit photovoltage of 0.73 V, a f

SUBMITTER: Zhang LY 

PROVIDER: S-EPMC9078221 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature