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Start Over Author "Eunjin Choi" Publisher american institute of physics
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1. Time-resolved photoluminescence properties of semiconductor quantum dot superlattices of different microcrystal shapes.

Author

Weon-Sik Chae, Eunjin Choi, Yun Ku Jung, Jin-Seung Jung, and Jin-Kyu Lee

Subjects
*PHOTOLUMINESCENCE, *QUANTUM dots, *SUPERLATTICES, *MAGNETIC coupling, *IMAGING systems
Abstract

We report time-resolved photoluminescence properties on semiconductor quantum dot (QD) superlattices (SLs) using PL lifetime imaging microscopy at a single particle level. PL lifetime imaging technique clearly reveals that different shaped QD SL microcrystals have different time-resolved PL characteristics. The faceted SL microcrystals consisted of well-organized QDs showed faster recombination rates than those of the spherical microparticles including randomly organized QDs, which can be explained by the different degree of energetic couplings among component QDs due to different packing fraction. [ABSTRACT FROM AUTHOR]

Published
2014
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