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Temperature-Dependent Absolute Photoluminescence Quantum Yield (PLQY) Measurements of a Halide Perovskite

publication date: Jul 12, 2018
 | 
author/source: Edinburgh Instruments Ltd

Variation of the Photoluminescence Quantum Yield of CsPbBr3 Perovskite with Temperature


Halide perovskites are a promising class of materials for a wide variety of optoelectronic applications such as photovoltaics, light emitting diodes, lasers and optical sensing. 

They have received widespread attention due to their many attractive synthetic and photophysical properties, namely: solution processability, high tunability, long charge carrier lifetimes and high charge carrier mobilities.  

Perovskite photovoltaic cells have reached an efficiency of 21% in a remarkably short period of time and are beginning to challenge the dominance of silicon. For light emission, perovskite nanocrystals have been shown to possess excellent wavelength tunability and high PLQY, while two dimensional perovskite structures have been shown to be promising single component white light emitters. 

One of the most important photophysical parameters of perovskites for optoelectronic applications is the photoluminescence quantum yield (PLQY), which is investigated using the FLS1000 Photoluminescence Spectrometer equipped with a variable temperature integrating sphere, the Cryosphere, in this application note.


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