Premium
Carbon Nanoparticles in High‐Performance Perovskite Solar Cells
Author(s) -
Yavari Mozhgan,
MazloumArdakani Mohammad,
Gholipour Somayeh,
Marinova Nevena,
Delgado Juan Luis,
TurrenCruz SilverHamill,
Domanski Konrad,
Taghavinia Nima,
Saliba Michael,
Grätzel Michael,
Hagfeldt Anders,
Tress Wolfgang
Publication year - 2018
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201702719
Subject(s) - materials science , perovskite (structure) , formamidinium , halide , chemical engineering , tin oxide , energy conversion efficiency , hysteresis , nanoparticle , carbon fibers , fabrication , nanotechnology , tin , phase (matter) , inorganic chemistry , oxide , organic chemistry , optoelectronics , composite material , metallurgy , chemistry , alternative medicine , pathology , quantum mechanics , composite number , engineering , medicine , physics
In the past few years, organic–inorganic metal halide ABX 3 perovskites (A = Rb, Cs, methylammonium, formamidinium (FA); B = Pb, Sn; X = Cl, Br, I) have rapidly emerged as promising materials for photovoltaic applications. Tuning the film morphology by various deposition techniques and additives is crucial to achieve solar cells with high performance and long‐term stability. In this work, carbon nanoparticles (CNPs) containing functional groups are added to the perovskite precursor solution for fabrication of fluorine‐doped tin oxide/TiO 2 /perovskite/spiro‐OMeTAD/gold devices. With the addition of CNPs, the perovskite films are thermally more stable, contain larger grains, and become more hydrophobic. NMR experiments provide strong evidence that the functional groups of the CNPs interact with FA cations already in the precursor solution. The fabricated solar cells show a power‐conversion efficiency of 18% and negligible hysteresis.