Lead halide perovskite nanocrystals (PeNCs) possess excellent optoelectronic properties in the ultraviolet and visible spectral regions, making them a promising class of semiconductor materials for various optoelectronic and photovoltaic applications. However, their limited response to near-infrared (NIR) light due to the inherent band gap (>1.5 eV) hinders their application in many advanced technologies. To circumvent this limitation, it is of fundamental significance to integrate PeNCs with rare earth-doped upconversion nanoparticles (UCNPs), which can efficiently convert low-energy near-infrared photons into high-energy ultraviolet and visible photons.
By exploiting energy transfer from UCNPs to PeNCs, this synergistic combination not only expands the near-infrared response range of PeNCs but also introduces novel upconversion luminescence with multidimensional tunability (e.g., wavelength, lifetime, and polarization) at low light. emission curve. Medium-power near-infrared radiation breaks through the inherent limitations of individual PeNCs and UCNPs, thus opening up new opportunities for materials and device engineering.
In this review, Wei Zheng et al., Fujian Institute of Physics, Chinese Academy of Sciences, focus on the latest progress in the development of PeNCs-UCNPs nanocomposites, focusing on advanced optoelectronic applications (such as full-spectrum solar cells, near-infrared photodetectors, and multi-level anti-counterfeiting) controlled synthesis and design of optical properties. Some future efforts and prospects in this active area of research are also envisioned.
Wen Zhang et.al The marriage of perovskite nanocrystals with lanthanide-doped upconversion nanoparticles for advanced optoelectronic applications. Aggregate. 2024
DOI: 1 0.1002/agt2. 558
https://doi.org/10.1002/agt2.558
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