Structure Optimization of Low-Dimensional Quantum Dots via Anisotropic Surface Energy

Lan Hee Yang, Sangil Hyun, Eunhae Koo, Dong June Ahn

Research output: Contribution to journalArticle

Abstract

Semiconductor quantum dots (QDs) exhibit remarkable photostability, large absorption spectra, tunable emission peaks, and high quantum yields. These features originate from their lowdimensionality. It is necessary to control the shape of QDs because their specific characteristics are normally determined by their particular shape and size. We employed first-principle calculations to identify the optimal structures of CdSe quantum dots and investigated the shape-determining mechanism governing the formation of low-dimensional nanomaterials. The anisotropy of surface energy is a key factor determining the shape of nanomaterials and we suggest how to control their geometry and characteristics by adjusting the surface energy.

Original languageEnglish
Pages (from-to)582-587
Number of pages6
JournalJournal of the Korean Physical Society
Volume72
Issue number5
DOIs
Publication statusPublished - 2018 Mar 1

Keywords

  • First principle calculation
  • Quantum dot
  • Shape effect
  • Surface energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Structure Optimization of Low-Dimensional Quantum Dots via Anisotropic Surface Energy'. Together they form a unique fingerprint.

  • Cite this