Organic functional dyes have been widely exploited in optoelectronic fields. As a key element in dye-sensitized solar cells (DSSCs)

their light-responsive spectral characters and long-term stability are the key issues on their practical applications. Generally

many traditional organic sensitizers are derived from the common concept of electron donor-π bridge-electron acceptor (D-π-A). Due to the finite donors and acceptors

the D-π-A model always exhibits limitation to the spectral response

photovoltaic efficiency and enduring stability. Recently

a novel D-A-π-A model via inserting an additional electron acceptor unit into the π bridge was proposed

allowing the convenient modulations in energy levels and light-harvesting. In this paper

the spectral modulation and stability enhancement based on D-A-π-A motif organic sensitizers were introduced.