It was found that multi - layer cycle growth method is propitious to increase quantum dots " uniformity and pl intensity and reduce the full width of half maximum ( fwhm ) of pl peaks ( 4 )发现循环生长多层inas量子点有利于提高量子点的均匀性，提高发光强度，减小发光峰半高宽。
2.
The pl wavelength of ingaas - covered quantum dots was much longer than common quantum dots . this result hinted a way to obtain the materials with longer wavelength luminescence 加了ingaas缓冲层的循环生长量子点发光峰比不加缓冲盖层的发光峰波长要长，有助于获得长波长发光材料。
