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Rapid thickness reading of CH 3 NH 3 PbI 3 nanowire thin films from color maps
Author(s) -
Spina Massimo,
Grimaldi Claudio,
Náfrádi Bálint,
Forró László,
Horváth Endre
Publication year - 2016
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201533067
Subject(s) - materials science , optoelectronics , perovskite (structure) , photodetector , fabrication , thin film , nanowire , halide , diode , light emitting diode , nanometre , optics , layer (electronics) , calibration , photovoltaic system , evaporation , nanotechnology , composite material , medicine , inorganic chemistry , chemistry , alternative medicine , physics , pathology , chemical engineering , engineering , ecology , statistics , mathematics , biology , thermodynamics
Hybrid halide perovskite photovoltaic materials show a remarkable light conversion efficiency in various optoelectronic devices. In the fabrication of these solar cells, light emitting diodes, laser and photodetector prototypes the thickness of the perovskite is an important parameter since the light is absorbed within a thin layer of a few hundred nanometers. Nevertheless, making perovskite coatings with various solution‐based and evaporation methods showing highly reproducible thickness and area coverage is still an issue. Therefore, rapid and reliable quality‐control of the film morphology is needed. This report shows a simple, rapid, and calibration‐free method for reading the thickness directly from the color map of nanowire perovskite films seen in standard optical microscope with visible light.