Formation of superlattice with aligned plane orientation of colloidal PbS quantum dots

Kohki Mukai, Satoshi Fujimoto, Fumimasa Suetsugu
2018 Japanese Journal of Applied Physics  
To cite this article: Kohki Mukai et al 2018 Jpn. J. Appl. Phys. 57 04FS02 View the article online for updates and enhancements. Recent citations Superlattice formation of faceted PbS quantum dots with three-dimensionally aligned crystal orientation Kohki Mukai et al -This content was downloaded from IP address on 24/07/2018 at 16:12 We investigated a method of forming a perfect quantum dot (QD) superlattice, in which each QD has the same plane orientation, by depositing
more » ... PbS QDs with clear facets in solution. QD facets were controlled by adjusting the synthesis temperature. X-ray evaluation showed that the crystal orientations of the film with QDs having clear facets were aligned. The slow deposition promoted this crystal alignment. The red shift of photoluminescence wavelength caused by the film formation was larger with QDs having facets than with spherical QDs, suggesting that the connection of the wave function between QDs was better so that the quantum size effect was further reduced.
doi:10.7567/jjap.57.04fs02 fatcat:r2msisb57jh5nmtf3i3xveznwm