Department of Physics, Graduate School of Nanoscience & Technology (WCU), KAIST, Daejeon, Republic of Korea.
Nanotechnology. 2010 Jun 4;21(22):225201. doi: 10.1088/0957-4484/21/22/225201. Epub 2010 May 7.
We have fabricated opal photonic crystal structure, which is assembled from quantum dots-conjugated polystyrene spheres. We found that the quantum dots (QD) emission from QD-conjugated photonic crystal (PC) structure experienced not only shifting to shorter wavelength, but also an asymmetrical broadening. This photonic crystal structure uses less quantum dots and may lead to great application such as single photon source and QD laser, since we may sharpen and broaden the QD emission by selecting the proper position of stop band.
我们已经制造出由量子点-共轭聚苯乙烯球组装而成的蛋白石光子晶体结构。我们发现，来自量子点-共轭光子晶体（PC）结构的量子点（QD）发射不仅经历了向短波长的移动，而且还经历了不对称的展宽。这种光子晶体结构使用的量子点较少，并且可能会导致一些重要的应用，例如单光子源和 QD 激光，因为我们可以通过选择合适的停止带位置来锐化和展宽 QD 发射。
