Fully printed perovskite solar cells(PSCs)were fabricated in air with all constituent layers,except for electrodes,deposited by the blade coating technique.The PSCs incorporated,for the first time,a nanometer-thick pr...Fully printed perovskite solar cells(PSCs)were fabricated in air with all constituent layers,except for electrodes,deposited by the blade coating technique.The PSCs incorporated,for the first time,a nanometer-thick printed bathocuproine(BCP)hole blocking buffer using blade coating and deposited at relative humidity up to 50%.The PSCs with a p-i-n structure(glass/indium tin oxide(ITO)/poly(3,4-ethylenedioxythiophene)polystyrene sulfonate(PEDOT:PSS)/CH_(3)NH_(3)Pbl_(3)/[6,6]-phenyl-C_(61)-butyric acid methyl ester(PCBM)/BCP/Ag)delivered a maximum power conversion efficiency(PCE)of 14.9%on an active area of 0.5 cm^(2)when measured under standard test conditions.The PSCs with a blade coated BCP delivered performance of 10%and 63%higher(in relative terms)than those incorporating a spin coated BCP or without any BCP film,respectively.The atomic force microscopy(AFM)showed that blade coated films were more homogeneous and acted also as a surface planarizer leading to a reduction of roughness which improved BCP/Ag interface lowering charge recombination.The demonstration of 15%efficient devices with all constituent layers,including nanometer-thick BCP(〜10 nm),deposited by blade coating in air,demonstrates a route for industrialization of this technology.展开更多
基金We acknow ledge Petroleo Brasileiro S.A.(PETROBRAS)under the project“Research and Development of Perovskite form ulations for production of printed photovoltaic cells and modulesM for funding.S.C.-H and T.M.B.acknowledge to have received funding from Departamen to del Huila’s Scholarship Program No.677 from Huila,Colombia,the European Unions H orizon 2020 research and innovation program under grant agreement no.763989 APOLO,Lazio Region“Gruppi di Ricerca”under project no.85-2017-15373(SIROH)according to L.R.Lazio 13/08,and the Italian Ministry o f University and Research(MIUR)through the PRIN2017 BOOSTER(project n.2017YXX8AZ)grant.This publication reflects only the authors' views and the funding agencies are not liable for any use that may be made of the inform ation contained therein.We thank to Gabriela Amorim for solar cell encapsulation.We thank engineering departm ent at CSEM Brasil for developing the nitrogen blower system.We thank to Centro de Microscopia,Laboratorio de Caracterizacao e de Processam ento de Nanom ateriais from Federal University of M inas Gerais,for providing the experimental facilities and Prof.Wagner da Nova Mussel for XRD results.
文摘Fully printed perovskite solar cells(PSCs)were fabricated in air with all constituent layers,except for electrodes,deposited by the blade coating technique.The PSCs incorporated,for the first time,a nanometer-thick printed bathocuproine(BCP)hole blocking buffer using blade coating and deposited at relative humidity up to 50%.The PSCs with a p-i-n structure(glass/indium tin oxide(ITO)/poly(3,4-ethylenedioxythiophene)polystyrene sulfonate(PEDOT:PSS)/CH_(3)NH_(3)Pbl_(3)/[6,6]-phenyl-C_(61)-butyric acid methyl ester(PCBM)/BCP/Ag)delivered a maximum power conversion efficiency(PCE)of 14.9%on an active area of 0.5 cm^(2)when measured under standard test conditions.The PSCs with a blade coated BCP delivered performance of 10%and 63%higher(in relative terms)than those incorporating a spin coated BCP or without any BCP film,respectively.The atomic force microscopy(AFM)showed that blade coated films were more homogeneous and acted also as a surface planarizer leading to a reduction of roughness which improved BCP/Ag interface lowering charge recombination.The demonstration of 15%efficient devices with all constituent layers,including nanometer-thick BCP(〜10 nm),deposited by blade coating in air,demonstrates a route for industrialization of this technology.
