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1. 发明申请

WO2008042337A2 SPIN-COATED POLYMER MICROCAVITY FOR LIGHT EMITTERS AND LASERS 审中-公开
标题翻译：用于光发射和激光的旋涂聚合物微孔
公开(公告)号：WO2008042337A2
公开(公告)日：2008-04-10
申请号：PCT/US2007/021089
申请日：2007-09-28
申请人： MEMON, Vinod, M. , VALAPPIL, Nikesh, V.
发明人： MEMON, Vinod, M. , VALAPPIL, Nikesh, V.
IPC分类号： B32B9/04
CPC分类号： H01S3/0627 , C09K11/02 , C09K11/565 , C09K11/88 , C09K11/883 , H01S3/0612 , H01S3/0621 , H01S3/169 , H01S3/178
摘要： A spin-coated polymer microcavity for light emitters and lasers producing enhancement of spontaneous emission rate from colloidal CdSe/ZnS core/shell quantum dots embedded in a one dimensional polymer microcavity structure at room temperature. The polymer microcavity structures are fabricated using spin coating. Alternating layers of polymers of two different refractive indices were stacked to form the Distributed Bragg reflectors (DBRs). To achieve high reflectivity, the polymers for the DBR structures were chosen so that they have a relatively high refractive index ratio. The high and low refractive index polymers chosen were poly-N(vinylcarbazole) (PVK) and poly acrylic acid (PAA), with refractive indices of 1.683 and 1.420 at 600 nm, respectively. Thin films of quarter wavelength thickness of the two polymers are alternately spin coated on a glass substrate to make the DBR structures. Greater than 90% reflectivity is obtained using ten periods of the structure. A PVK cavity layer of λ thickness embedded with CdSe/ZnS core/shell quantum dots is sandwiched between two of these DBRs to form the entire microcavity structure. The bottom and top DBRs comprise ten and five periods, respectively.
摘要翻译：用于光发射器和激光器的旋涂聚合物微腔，其产生在室温下嵌入在一维聚合物微腔结构中的胶体CdSe / ZnS核/壳量子点的自发发射速率的增强。聚合物微腔结构使用旋涂制成。将两个不同折射率的聚合物的交替层叠以形成分布式布拉格反射器（DBR）。为了获得高反射率，选择DBR结构的聚合物，使得它们具有相对高的折射率比。所选择的高折射率聚合物和低折射率聚合物分别为聚-N（乙烯基咔唑）（PVK）和聚丙烯酸（PAA），其折射率分别为600nm时的折射率为1.683和1.420。将两种聚合物的四分之一波长厚度的薄膜交替旋涂在玻璃基板上以制备DBR结构。使用十个结构周期获得大于90％的反射率。 PVK腔层？嵌入CdSe / ZnS核/壳量子点的厚度夹在这两个DBR之间以形成整个微腔结构。底部和顶部DBR分别包括十个和五个周期。

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