Publication date: 17th July 2025
Metal halide perovskite nanocrystals (NCs) have shown remarable progress in the fields of various optoelectronic devices such as solar cells, LEDs, photodetectors, lasing, etc. It is possible for their superior photophysical properties like high absorption coefficient, easy color tunability, high emission intensity, narrow emission spectra, longer diffusion length, better color purity, and so on. However, due to their low formation energy and ionic nature, the perovskite nanomaterials are sensitive to humidity, intense heat, and UV lights. They also undergo halide exchange process during the mixing of different halide compositions of the NCs. It's very challenging to synthesize stable red-emitting perovskite NCs, which is a significant component for WLEDs. Various strategies have been implemented to improve the stability, emission intensity and dispersivity. Proper encapsulation of perovskite NCs with various long-chain bulky polymers or high bandgap inorganic shells permits successful transfer to hydrophilic media, proving to be a potential candidate for different toxic metal ions detection and bio-imaging applications. Color-tunable LEDs are also proven to have very high luminescence intensity and competitive device efficiency which is favorable for next generation display technologies. Nanopatterning of the NCs films allows to design high quality displays with high refresh rates.
This research is supported by the Department of Science and Technology, India, and SERB Startup research grants for financial support. We also acknowledge Indian Institute of Technology Guwahati and Institute of Chemical Technology Indian Oil Odisha Campus for providing the initial startup research grants and central instruments facilitis for conducitng our research activities.
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