Blade-coating　serving　as　a　prototype　tool　for　slot-die　coating　can　be　very　compatible　with　large-area　roll-to-roll　coating.　Using　blade-coating　in　an　ambient　environment,　an　average　power　conversion　efficiency　(PCE)　of　10.03%　is　achieved　in　nonfullerene　organic　solar　cells,　which　is　higher　than　that　of　the　optimal　spin-coated　device　with　a　PCE　of　9.41%.　It　is　demonstrated　that　blade-coating　can　induce　a　higher　degree　of　molecular　packing　for　both　conjugated　polymer　donors　and　small-molecular　acceptors　as　it　helps　to　produce　a　seeding　film　containing　numerous　crystal　grains,　subsequently　providing　nucleation　sites　for　the　residual　solution　when　the　motion　of　the　blade　exposes　a　liquid　front.　Due　to　this　effect,　blade-coating　can　partially　replace　the　role　of　the　additive　1,8-diiodooctane　(DIO)　and　thus　achieves　the　optimized　morphology　with　fewer　additives.　Moreover,　it　is　found　that　the　blade-coated　film　with　0.25%　DIO　possesses　not　only　a　smaller　domain　size　but　also　higher　domain　purity,　suggesting　more　D/A　(donor/acceptor)　interfaces　and　a　purer　phase　domain　as　compared　to　the　spin-coated　film　with　1%　DIO.　Encouragingly,　the　blade-coated　device　with　less　DIO　(0.25%)　exhibits　much　better　stability　than　the　spin-coated　device　with　1%　DIO,　showing　excellent　prospects.