White-light emitting surface-functionalized ZnSe quantum dots: europium complex-capped hybrid nanocrystal
作者： Byoung-Hwa Kwon , Ho Seong Jang , Hyoung Sun Yoo , Sung Wook Kim , Dong Seok Kang
DOI: 10.1039/C1JM12091C
关键词:
摘要: A color-tunable emitter comprising Eu complex-capped ZnSe quantum dot (QD) organic–inorganic hybrid nanocrystals (NCs) was simply synthesized by a hot-injection method, plus the addition of an precursor. Hybrid NCs have emission both complexes and QDs, they show bluish white light. In case composite (Eu/Zn = 1.0), increases up to 174% compared with that pristine QDs. It is due sensitization complex acting as antenna, so energy obtained transfers addition, strong excitation band in near-UV region, which gives them advantage over wavelength converters for light-emitting diodes (LEDs). The expected structure verified TEM, XRD, XPS. features zinc blende crystal identical QD, along Eu-based can be coordinated Se ion on surface Therefore, new luminescent material using QDs lanthanide (Ln) potentially serve light source LEDs.
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