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 Eu precursor. Hybrid NCs have the emission of both Eu complexes and ZnSe QDs, and they show bluish white light. In the case of composite NCs (Eu/Zn = 1.0), the emission increases up to 174% compared with that of pristine ZnSe QDs. It is due to the sensitization of the Eu complex acting as an antenna, so the energy obtained by the Eu complexes transfers to the ZnSe QDs. In addition, the NCs have a strong excitation band in the near-UV region, which gives them an advantage over wavelength converters for white light-emitting diodes (LEDs). The expected structure of the hybrid NCs was verified by TEM, XRD, and XPS. It features a zinc blende crystal structure identical to the ZnSe QD, along with Eu-based complexes that can be coordinated with the Se ion on the surface of ZnSe QDs. Therefore, new organic–inorganic hybrid luminescent material using the emission of both QDs and lanthanide (Ln) complexes can potentially serve as a light source in white LEDs. Graphic AbstractAn Eu complex-capped hybrid ZnSe nanocrystal (NC) has an unique emission from both Eu complexes and ZnSe quantum dots (QDs), exhibiting bluish white-light. The emission from composite NCs increases up to 174% compared with that of pristine ZnSe QDs due to the sensitization of the Eu complex acting as an antenna.
원문 PDF 다운로드
원문 URL 링크
원문 PDF 파일 및 링크정보가 존재하지 않을 경우 KISTI DDS 시스템에서 제공하는 원문복사서비스를 사용할 수 있습니다. (원문복사서비스 안내 바로 가기)
DOI 인용 스타일