α-DTC70 fullerene performs significantly better than β-DTC70 as electron transporting material in perovskite solar cells | Zendy

Edison Castro | Zendy; Olivia FernandezDelgado | Zendy; Albert Artigas | Zendy; Gerardo Zavala | Zendy; Fang Liu | Zendy; Antonio MorenoVicente | Zendy; Antonio RodríguezFortea | Zendy; José de Jesús Díaz Velásquez | Zendy; Josep M. Poblet | Zendy; Luís Echegoyen | Zendy

Open Access

α-DTC₇₀ fullerene performs significantly better than β-DTC70 as electron transporting material in perovskite solar cells

Author(s) -

Edison Castro,

Olivia FernandezDelgado,

Albert Artigas,

Gerardo Zavala,

Fang Liu,

Antonio MorenoVicente,

Antonio RodríguezFortea,

José de Jesús Díaz Velásquez,

Josep M. Poblet,

Luís Echegoyen

Publication year - 2020

Publication title -

journal of materials chemistry c

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.899

H-Index - 128

eISSN - 2050-7534

pISSN - 2050-7526

DOI - 10.1039/d0tc01382j

Subject(s) - materials science , perovskite (structure) , fullerene , electron , perovskite solar cell , optoelectronics , chemical engineering , nanotechnology , solar cell , organic chemistry , chemistry , physics , engineering , quantum mechanics

In this work, two new C 70 isomers, α and β bis(2-(thiophen-2-yl)ethyl)-C 70 -fullerene mono-adducts (DTC 70 ), were synthesized, characterized and used as electron transporting materials (ETMs) in perovskite solar cells (PSCs). Our results show that the α isomer improves both the J sc and FF values of the devices, when compared to the results for the β-isomer and to those for phenyl-C 70 -butyric acid methyl ester (PC 71 BM), used as control. Devices based on α-DTC 70 achieved a power conversion efficiency (PCE) of 15.9%, which is higher than that observed with PC 71 BM (15.1%).

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