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Dye-sensitized solar cells(DSSCs)have shown significant potential for indoor and building integrated photovoltaic applications.Herein we present three new D-A-π-A organic sensitizers,XY1,XY2,and XY3,that exhibit high molar extinction coefficients and abroad absorption range.Molecular modifications of these dyes,featuring a benzothiadiazole(BTZ)auxiliary acceptor,were achieved by introducing a thiophene heterocycle as well as by shifting the position of BTZ on the conjugated bridge.