The　evolution　of　the　Perovskite　solar　cells　(PSC)　has　been　remarkable　with　several　milestones　achieved　in　recent　years.　Intensive　research　is　still　ongoing　to　achieve　the　highly　efficient　PSCs　with　enhanced　stability.　The　main　problems　of　perovskite　solar　cells　are　relatively　low　power　conversion　efficiency　(PCE)　and　less　stability.　This　research　work　reports　the　improvement　in　performance　of　PSC　by　utilizing　the　encapsulation　of　TiO2　nanotubes　with　Cs　nanoparticles　to　increase　the　electron　injection　rate　and　thermal　stability.　In　this　context,　TiO2　Nanotubes　and　Cs-TiO2　Nanotubes　have　been　synthesized　by　simple　electrochemical　anodization　technique.　SEM,　EDX　and　XRD　characterizations　were　engaged　to　observe　the　surface　morphology,　elemental　composition　and　crystalline　structure,　respectively.　UV/Vis　spectra　show　that　Cs-TiO2　nanotubes　have　higher　optical　absorption　in　the　visible　region　than　pure　TiO2　nanotubes-based　samples.　The　stability　of　PSC　was　evaluated　by　thermal　gravimetric　analyses　(TGA),　which　showed　only　2.5　%　weight　loss　up　to　800　degrees　C.　Furthermore,　J-V　measurements　were　also　performed,　and　it　was　observed　that　the　Cs-TiO2　nanotubes-based　PSCs　presented　an　enhanced　PCE　of　13.24　%,　which　is　higher　than　those　of　the　PSCs　based　on　pure　TiO2　nanotubes.　So,　an　enhanced　PCE　could　be　achieved　by　higher　electron　injection　rate.