NOVELTY - The cell has an electrode formed with a hole transport layer that is formed on an intermediate layer. The intermediate layer is formed on a light absorption layer that is formed on another electrode. The latter electrode is made of conductive transparent material. The light absorption layer is provided with a dye that is indicated as a semiconductor layer. The hole transport layer is formed with p-type semiconductor material and carbon nanotube e.g. single-walled carbon nanotube and multi-walled carbon nanotube. The semiconductor layer is made of metal oxide.    USE - Perovskite based solar cell.    ADVANTAGE - The method enables adding small quantity of spiro-1,3-benzodioxole-2,3'-pyrrolidine within the p-type semiconductor material, and utilizing filler so as to improve conductivity of the hole transport layer of the solar cell and enhance carrier concentration and mobility. The method enables forming the intermediate layer, the carbon nanotube and hierarchical structure of the hole transport layer together so as to prevent negative electron transport from being formed on the intermediate layer, induce the negative electron transport when the intermediate layer is formed in the carbon nanotube, enhance energy conversion efficiency of the cell and improve conductivity of the intermediate layer.    DETAILED DESCRIPTION - The p-type semiconductor material is selected from lead, tin, niobium, germanium, titanium, nibodium, zirconium, selenium and halogen. The p-type semiconductor material e.g. poly-3- hexylthiophene, poly-2,1,3- benzothiadiazole -4,7- diyl,4,4- bis-2- ethylhexyl -4H- cyclopenta, 2,1-b:3,4-b'dithiophene -2,6- diyl, poly-9 -1- octyl nonyl -9H- carbazole -2,7- diyl-2,5- thiophendiyl -2,1,3- benzothiadiazole -4,7- diyl -2,5- thiophendiyl and poly triarylamine and spiro-1,3-benzodioxole-2,3'-pyrrolidine. The conductive transparent material is selected from fluorine tinoxide, indium-tin-oxide, tin-based oxide, zinc oxide and aluminum doped Zinc Oxide and gallium doped zirconium oxide. The metal oxide is selected from titanium oxide, tin oxide, zin oxide, tungsten(VI) oxide, dinitrogen pentoxide and sulfur trioxide. The former electrode is made of aluminum, platinum, nickel, copper, silver, indium, lead, ruthenia, rhodium, ruthenium, iridium, osmium, carbon, and conducting polymer. An INDEPENDENT CLAIM is also included for a perovskite solar cell manufacturing method.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of a perovskite solar cell.