Optical properties of organic/inorganic perovskite microcrystals through the characterization of Fabry–Pérot resonances

Abstract

The precise knowledge of the optical properties, specifically the refractive index, of organic/ inorganic perovskites is essential for pushing forward the performance of the current photovoltaic devices that are being...

Single Crystal Growth of Hybrid Lead Bromide Perovskites Using a Spin-Coating Method

“…Figure b shows an image of the measured crystal obtained by optical microscopy. It has well-defined parallel faces with dimensions of 20.64 × 21.62 μm 2 in area and 1.5 μm in depth, as deduced from a modeling process . As expected, interference ripples appear in the transmittance spectrum in that range from where the absorption of the material somehow diminishes, say about 550 nm to longer wavelengths, thus confirming that the crystal itself can work as an optical microcavity, and it has a good structural quality.…”

Groove-assisted solution growth of lead bromide perovskite aligned nanowires: a simple method towards photoluminescent materials with guiding light properties

“…The solid color curves correspond to the PL spectra measured for each dE-C case (same color and label as camera image frames), and the dashed red curves correspond to fits according a theoretical model described in ref. 65. As an example, the plot at the right side shows that the fitted spectrum "c" results from the overlap of two peaks, P0 and P1 (blue and red dashed curves), corresponding respectively to the direct emission of the nanowire and the guided light emission from excitation to collection area.…”

“…The fit of this peak was achieved by using the model described in ref. 65, and assuming a thickness of 106 nm that corresponds to the nanowire height. This permits to obtain the bulk extinction coefficient of the synthetized material.…”

“…The intensities between the images are not comparable because they were recorded with different sensitivity conditions of the camera. Down Left of the figure:The solid color curves correspond to the PL spectra measured for each dE-C case (same color and label as camera image frames), and the dashed red curves correspond to fits according a theoretical model described in ref 65…”

Octahedral Molybdenum Cluster-Based Single Crystals as Fabry–Pérot Microresonators

“…This molybdenum clusterbased material was studied with a homemade optical system, and the crystal emission and transmittance spectra were analyzed in order to extract the optical constants of the material. 59 The preparation of single crystals with composition MC was optimized by cautious control of the crystallization conditions to obtain the targeted size. 42 Single crystals of MC were obtained with regular shapes, parallel faces, and with density of defects with a yield around 90%.…”