High-performance shortwave-infrared light-emitting devices using core-shell (PbS-CdS) colloidal quantum dots.
basic_science · Level V
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- Record sourced from PubMed, PMID 25639896.
- Also identified by DOI 10.1002/adma.201404636.
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Abstract
Core-shell PbS-CdS quantum dots enhance the peak external quantum efficiency of shortwave-infrared light-emitting devices by up to 50-100-fold (compared with core-only PbS devices). This is more than double the efficiency of previous quantum-dot light-emitting devices operating at wavelengths beyond 1 μm, and results from the passivation of the PbS cores by the CdS shells against in situ photoluminescence quenching.