Abstract
We investigate the dimensional transition and optical properties of CdTe/ZnTe nanostructures with various CdTe thicknesses. The excitonic peak corresponding to the transitions from the ground electronic sub-band to the ground heavy-hole band in CdTe/ZnTe nanostructures shows different redshifts with increasing CdTe thickness due to variations in the dimensions of CdTe/ZnTe nanostructures. Time-resolved photoluminescence (PL) measurements used to study the carrier dynamics show that the decay time of 4.0 monolayer (ML) CdTe/ZnTe nanostructures is longer than that of CdTe/ZnTe nanostructures with different CdTe thicknesses. The activation energy of electrons confined in 4.0 ML CdTe/ZnTe nanostructures, as obtained from the temperature-dependent PL spectra, is higher than that of electrons confined in CdTe/ZnTe nanostructures with different CdTe thicknesses. These results indicate that the carrier dynamics and activation energy of CdTe/ZnTe nanostructures are affected by the thickness and dimensions of CdTe/ZnTe nanostructures.
| Original language | English |
|---|---|
| Pages (from-to) | 307-310 |
| Number of pages | 4 |
| Journal | Journal of Crystal Growth |
| Volume | 370 |
| DOIs | |
| State | Published - 2013.05.1 |
Keywords
- A1. Low dimensional structures
- A1. Nanostructures
- A3. Atomic layer epitaxy
- A3. Molecular beam epitaxy
- B1. Cadmium compounds
- B2. Semiconducting II-VI materials
Fingerprint
Dive into the research topics of 'Carrier dynamics and activation energy of CdTe/ZnTe nanostructures with different CdTe thicknesses'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver