Abstract
The structure of diffraction-amorphous CdSe (a-CdSe) quantum dots (QDs) electrodeposited on evaporated Pd substrate was studied by high resolution transmission electron microscopy (HRTEM), and compared with epitaxial (crystalline) QDs obtained by the same procedure on Au, as well as with a simulated image of random a-CdSe. Digital analysis of HRTEM images established the existence of repeating ordered motifs in a-CdSe QDs on Pd substrates, in the form of epitaxial sub-nanometre to nanometre size clusters. The QDs are shown to be intermediate between crystalline and random amorphous material. Digital Fourier analysis indicated epitaxial relationship with the {111}Pd substrate, rotated 30° relative to the orientational relationship on {111}Au.
Original language | English |
---|---|
Pages (from-to) | 277-284 |
Number of pages | 8 |
Journal | Surface Science |
Volume | 350 |
Issue number | 1-3 |
DOIs | |
State | Published - 20 Apr 1996 |
Externally published | Yes |
Keywords
- Amorphous thin films
- Cadmium selenide
- Crystalline-amorphous interfaces
- Electrochemical methods
- Electron microscopy
- Epitaxy
- Palladium
- Quantum effects
ASJC Scopus subject areas
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry