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公开(公告)号:US06322901B1
公开(公告)日:2001-11-27
申请号:US08969302
申请日:1997-11-13
申请人: Moungi Bawendi , Klavs F. Jensen , Bashir O. Dabbousi , Xavier Rodriguez-Viejo , Frederic Victor Mikulec
发明人: Moungi Bawendi , Klavs F. Jensen , Bashir O. Dabbousi , Xavier Rodriguez-Viejo , Frederic Victor Mikulec
IPC分类号: B32B516
CPC分类号: C01B19/007 , B82Y30/00 , C01B17/20 , C01P2002/72 , C01P2002/84 , C01P2004/04 , C01P2004/52 , C01P2004/86 , C01P2006/60 , C09K11/883 , Y10T428/12028 , Y10T428/12049 , Y10T428/12181 , Y10T428/2991
摘要: A coated nanocrystal capable of light emission includes a substantially monodisperse nanoparticle selected from the group consisting of CdX, where x=S, Se, Te and an overcoating of ZnY, where Y=S, Se, uniformly deposited thereon, said coated nanoparticle characterized in that when irradiated the particles exhibit photoluminescence in a narrow spectral range of no greater than about 60 nm, and most preferably 40 nm, at full width half max (FWHM). The particle size of the nanocrystallite core is in the range of about 20 Åto about 125 Å, with a deviation of less than 10% in the core. The coated nanocrystal exhibits photoluminescence having quantum yields of greater than 30%.
摘要翻译: 能够发光的涂覆纳米晶体包括选自CdX的基本上单分散的纳米颗粒,其中x = S,Se,Te和ZnY的外涂层,其中Y = S,Se均匀地沉积在其上,所述涂覆的纳米颗粒的特征在于 当照射时,颗粒在全宽度半最大值(FWHM)下在不大于约60nm,最优选40nm的窄光谱范围内显示光致发光。 纳米晶核的粒径在约20至约125的范围内,核中的偏差小于10%。 涂覆的纳米晶体显示出具有大于30%的量子产率的光致发光。