Abstract
We report the growth of CdTe/PbTe composites on polycrystalline Au and ITO (indium tin oxide) substrates using an electrochemical co-deposition technique. These systems have been characterized by cyclic voltammetry, Auger electron spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, UV-vis-NIR absorption spectroscopy and time-resolved transient absorption spectroscopy. Our data, the steady-state optical spectra in particular, demonstrate unambiguously the formation of stable CdTe/PbTe quantum wells under these conditions. Preliminary femtosecond timeresolved transient absorption measurements are also presented, and indicate that the charge carrier dynamics for films grown on ITO are dominated by charge carrier trapping to defects due to poor epitaxy on this substrate. Strategies for improving the conditions for epitaxy are discussed.
| Original language | English (US) |
|---|---|
| Pages | 319-325 |
| Number of pages | 7 |
| State | Published - 2001 |
| Externally published | Yes |
ASJC Scopus subject areas
- General Engineering