Supercontinuum lightsources in optical characterisation of perovskites
Asger Jensen a
a NKT Photonics, Blokken, Birkerød, Denmark
nanoGe Perovskite Conferences
Proceedings of International Conference on Perovskite Thin Film Photovoltaics and Perovskite Photonics and Optoelectronics (NIPHO20)
Sevilla, Spain, 2020 February 23rd - 25th
Organizer: Hernán Míguez
Industry, Asger Jensen, presentation 075
Publication date: 25th November 2019

This talk will introduce the technology behind supercontinuum generation and provide application examples of how it is used to advance research within optical material investigations of materials such as perovskites and perovskite devices though hyperspectral analysis and exciton dynamics.

The supercontinuum lasers behind the highest resolution optical microscopes have been around for less than 20 years and allow both full spectroscopic investigations between 260nm to 2200nm, and simultaneous dynamic investigations of effects on the picosecond to nanosecond time scale. These pulsed broadband laser light sources are enabling discoveries in biology, material and chemical sciences not achievable with any other technology.  

Supercontinuum light sources use nonlinear effects in special engineered photonic crystal fibers to create pico second broadband pulses at high repetition rates. The intensity of a focused supercontinuum correspond to many suns allowing fast point-by point interrogation with micro meter resolution and the pulsed nature of the technology allows for further interrogation of the charge carrier dynamics such as fluorescence lifetime imaging (FLIM) and exciton diffusion on the nano second scale. 

 

 

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