▎ 摘　　要

NOVELTY - A perovskite solar cell comprises from top to bottom, a transparent substrate, a conductive cathode, an electron-transport layer, a perovskite active layer, a bulk heterojunction comprising 2,2'-((4,4,9,9-tetrakis(4-hexylphenyl)-4,9-dihydro-s-indaceno(1,2-b:5,6-b')dithiophene-2,7-diyl)bis((4-((2-ethylhexyl)oxy)-5,2-thiophenediyl)methylidyne(5,6-difluoro-3-oxo-1H-indene-2,1(3H)-diylidene)))bis(propanedinitrile) (IEICO-4F), or poly(4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo(1,2-b;4,5-b')dithiophene-2,6-diyl-alt-(4-(2-ethylhexyl)-3-fluorothieno(3,4-b)thiophene-)-(2-carboxylate-2-6-diyl)) (PCE10)-doped hole-transport layer comprising spiro-OMeTAD, and a metal anode, and having a film thickness of 300 nm. USE - Perovskite solar cell. ADVANTAGE - The solar cell includes spiro-OMeTAD which increases short-circuit current, maintains open-circuit voltage, and improves photoelectric conversion efficiency. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the preparation of the perovskite solar cell, which involves cleaning the substrate using detergent, acetone solution and deionized water, drying, performing UV treatment, spin coating electron transport layer comprising 2.67 wt.% tin oxide, annealing, isolating in a dust-free oxygen-free dry environment, spin coating perovskite precursor solution, annealing, spin coating 1mL 73.2 mg/mL spiro-OMeTAD solution on the perovskite active layer, adding 28.8 mu L tributyl phosphate, 17.5 mu L lithium-bis(trifluoromethanesulfonyl)imide, and 29 mu L 520 mg/mL Tris(2-(1H-pyrazol-1-yl)-4-tert-butylpyridine)-cobalt(III)tris(bis(trifluoromethylsulfonyl)imide), spin coating heterojunction, annealing, under high vacuum environment, evaporating metal cathode having a thickness of 100-200 nm on the hole transport layer, and, packaging.