SrSnO　3　nanoparticles　were　synthesized　and　employed　for　the　first　time　as　electrode　materials　in　dye-sensitized　solar　cells.　By　optimizing　the　film　thickness,　an　initial　efficiency　of　1.02%　was　obtained.　The　performance　of　the　dye-sensitized　SrSnO　3　solar　cells　was　then　improved　by　using　chemical　bath　deposition　(CBD).　Electrochemical　measurements　demonstrated　that　the　CBD　treatment　not　only　prohibited　interfacial　charge　recombination　but　also　prolonged　the　electron　lifetimes,　resulting　in　a　significantly　enhanced　efficiency　of　1.90%　under　the　illumination　of　one　sun　(AM1.5,　100　mW　cm　-2).　©　2012　Elsevier　Ltd.　All　rights　reserved.