Influence of NH3·H2O additive on the photovoltaic performance of dye-sensitized solar cells with chemical sintered scattering layers

► A chemical sintered bi-functional nanocrystalline TiO2 layer was prepared. ► The nanocrystalline TiO2 layer can offer both light-scattering and electron generating properties. ► The DSSC with this nanocrystalline TiO2 layer in the photoelectrode shows obviously enhanced photovoltaic performance. ► The influence of additional amount of NH3·H2O chemical sintering agent on the photovoltaic performance of DSSCs was studied.