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Enhanced Efficiency and Stability of Perovskite Solar Cells Through Nd‐Doping of Mesostructured TiO 2
Author(s) -
Roose Bart,
Gödel Karl C.,
Pathak Sandeep,
Sadhanala Aditya,
Baena Juan Pablo Correa,
Wilts Bodo D.,
Snaith Henry J.,
Wiesner Ulrich,
Grätzel Michael,
Steiner Ullrich,
Abate Antonio
Publication year - 2016
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.201501868
Subject(s) - materials science , doping , mesoporous material , perovskite (structure) , energy conversion efficiency , chemical engineering , optoelectronics , catalysis , chemistry , engineering , biochemistry
Block‐copolymer templated chemical solution deposition is used to prepare mesoporous Nd‐doped TiO 2 electrodes for perovskite‐based solar cells. X‐ray diffraction and photothermal deflection spectroscopy show substitutional incorporation into the TiO 2 crystal lattice for low Nd concentration, and increasing interstitial doping for higher concentrations. Substitutional Nd‐doping leads to an increase in stability and performance of perovskite solar cells by eliminating defects and thus increasing electron transport and reducing charge recombination in the mesoporous TiO 2 . The optimized doping concentration of 0.3% Nd enables the preparation of perovskite solar cells with stabilized power conversion efficiency of >18%.