Fabrication and photoluminescence of SiC quantum dots stemming from 3C, 6H, and 4H polytypes of bulk SiC
Fabrication and photoluminescence of SiC quantum dots stemming from 3C, 6H, and 4H polytypes of bulk SiC
复制标题
基于 3C、6H 和 4H 块状 SiC 多型体的 SiC 量子点的制备和光致发光
DOI:
10.1063/1.4755778
复制
发表时间:
2012-09-24
影响因子:
4
通讯作者:
Xiao, Min
中科院分区:
文献类型:
--
作者:
Fan, Jiyang;Li, Hongxia;Xiao, Min
We report the fabrication and photoluminescence properties of the colloidal SiC quantum dots (QDs) stemming, respectively, from diminishing different polytypes (3C, 6H, and 4H) of bulk SiC crystals using electrochemical method. The three types of obtained SiC QDs show unexpected quite-similar photoluminescence, photoluminescence excitation, and transient photoluminescence properties. This strange phenomenon is explained by using the polytypic transformations of the colloidal SiC QDs driven by ultrasonic waves. Our results will greatly deepen our understanding of the fundamental physics of nanoscale SiC.