Interfacial versus Bulk Properties of Hole-Transporting Materials for Perovskite Solar Cells: Isomeric Triphenylamine-Based Enamines versus Spiro-OMeTAD.

Autor: Simokaitiene J; Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilenu Road 19, LT, 50245 Kaunas, Lithuania., Cekaviciute M; Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilenu Road 19, LT, 50245 Kaunas, Lithuania., Baucyte K; Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilenu Road 19, LT, 50245 Kaunas, Lithuania., Volyniuk D; Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilenu Road 19, LT, 50245 Kaunas, Lithuania., Durgaryan R; Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilenu Road 19, LT, 50245 Kaunas, Lithuania., Molina D; Department of Chemistry, Laboratory of Photomolecular Science Institute of Chemical Sciences Engineering, École Polytechnique Federale de Lausanne, 1015 Lausanne, Switzerland.; Área de Química Orgánica, Instituto de Bioingeniería, Universidad Miguel Hernández, Avda. de la Universidad, s/n, 03202 Elche, Spain., Yang B; Department of Chemistry, Laboratory of Photomolecular Science Institute of Chemical Sciences Engineering, École Polytechnique Federale de Lausanne, 1015 Lausanne, Switzerland., Suo J; Department of Chemistry, Laboratory of Photomolecular Science Institute of Chemical Sciences Engineering, École Polytechnique Federale de Lausanne, 1015 Lausanne, Switzerland., Kim Y; Department of Chemistry, Laboratory of Photomolecular Science Institute of Chemical Sciences Engineering, École Polytechnique Federale de Lausanne, 1015 Lausanne, Switzerland., Filho DADS; Laboratoire de Physicochimie des Polymères et des Interfaces, EA 2528, CY Cergy Paris Université, 5 mail Gay Lussac, 95031 Cergy Pontoise Cedex, France.; Institute for Advanced Studies, University of Cergy-Pontoise, 1 rue Descartes, 95000 Neuville-sur-Oise, France.; Institute of Physics, University of Brasilia, 70919-970 Brasilia, Brazil., Hagfeldt A; Department of Chemistry, Laboratory of Photomolecular Science Institute of Chemical Sciences Engineering, École Polytechnique Federale de Lausanne, 1015 Lausanne, Switzerland., Sini G; Laboratoire de Physicochimie des Polymères et des Interfaces, EA 2528, CY Cergy Paris Université, 5 mail Gay Lussac, 95031 Cergy Pontoise Cedex, France., Grazulevicius JV; Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilenu Road 19, LT, 50245 Kaunas, Lithuania.
Jazyk: angličtina
Zdroj: ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2021 May 12; Vol. 13 (18), pp. 21320-21330. Date of Electronic Publication: 2021 Apr 29.
DOI: 10.1021/acsami.1c03000
Abstrakt: Here, we report on three new triphenylamine-based enamines synthesized by condensation of an appropriate primary amine with 2,2-diphenylacetaldehyde and characterized by experimental techniques and density functional theory (DFT) computations. Experimental results allow highlighting attractive properties including solid-state ionization potential in the range of 5.33-5.69 eV in solid-state and hole mobilities exceeding 10 -3 cm 2 /V·s, which are higher than those in spiro-OMeTAD at the same electric fields. DFT-based analysis points to the presence of several conformers close in energy at room temperature. The newly synthesized hole-transporting materials (HTMs) were used in perovskite solar cells and exhibited performances comparable to that of spiro-OMeTAD. The device containing one newly synthesized hole-transporting enamine was characterized by a power conversion efficiency of 18.4%. Our analysis indicates that the perovskite-HTM interface dominates the properties of perovskite solar cells. PL measurements indicate smaller efficiency for perovskite-to-new HTM hole transfer as compared to spiro-OMeTAD. Nevertheless, the comparable power conversion efficiencies and simple synthesis of the new compounds make them attractive candidates for utilization in perovskite solar cells.
Databáze: MEDLINE