E-mail

E-mail a Wiley Online Library Link

Mathieu Helfrich, Philipp Schroth, Daniil Grigoriev, Sergey Lazarev, Roberto Felici, Taras Slobodskyy, Tilo Baumbach and Daniel M. Schaadt Back Cover: Growth and characterization of site-selective quantum dots (Phys. Status Solidi A 12/2012) physica status solidi (a) 209

Article first published online: 12 DEC 2012 | DOI: 10.1002/pssa.201290032

Thumbnail image of graphical abstract

Helfrich et al. (pp. 2387–2401) have prepared and investigated site-selective InAs quantum dots (QDs) on pre-patterned GaAs substrates in order to gain further understanding of the mechanisms controlling the structure and the distribution of site-selective QDs. Regular arrays with multiple QDs (upper left image on the cover) or individual QDs at pre-defined locations (upper right) are of interest, depending on the envisaged applications. Besides geometrical parameters of the pattern and growth parameters that determine the final QD structure to some extent, a post growth treatment based on in situ annealing has allowed to manipulate the size of the QDs as well as the number of QDs per site in an array (lower left). Further insight was gained by analyzing a single array of site-selective QDs grown inside nanoholes with X-ray diffraction techniques. The structure and the periodicity of the holes is revealed in the measurement and can be modeled using finite element method (lower right). A proper understanding of the contributions from hole shape and pattern is essential in order to further investigate the ordering of QDs nucleating inside regularly spaced holes.

Complete the form below and we will send an e-mail message containing a link to the selected article on your behalf

Required = Required Field

Choose captcha format: Image or Audio. Click here if you need help.

SEARCH