Schematic spectra of individual luminescent peaks from cQDs and sQDs in chirped QDM bilayers. Spectra of (a) straddled or type-I, (b) staggered or type-II, and (c) broken-gap or type-III chirped QDM bilayers. Subscripts 1 and 2 denote the lower and upper QDM layers, respectively. The dashed curve in (a) indicates optional sQD2 peak. The black (gray) bar marks the spectral range between the cQD and sQD peaks of QDM1 (QDM2).
Patanasemakul et al. Nanoscale Research Letters 2012 7:207 doi:10.1186/1556-276X-7-207