Thermal stability of ZnO/ZnCdO/ZnO double heterostructures grown by pulsed laser deposition

Lange, M.; Dietrich, Christof P.; Benndorf, G.; Lorenz, Michael; Zúñiga‐Pérez, Jesús; Grundmann, Marius

doi:10.1016/j.jcrysgro.2011.06.030

Cited by 7 publications

(2 citation statements)

References 31 publications

(37 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Surprisingly, there are only a few reports in the literature regarding the effect of annealing on the properties of CdZnO and CdZnO/ZnO heterostructures. [5][6][7][8][9][10] Nevertheless, it is well understood that phase separation might have a profound influence on the thermal stability of CdZnO (Refs. 5 and 8) because of different equilibrium phases of the binary components.…”

mentioning

confidence: 99%

“…However, the literature data documenting Cd diffusion in ZnO are limited. Very recently, Lange et al 9 have shown that pulsed laser deposited ZnO/CdZnO/ZnO heterostructures may be stable up to 720 C and estimated the activation energy of Cd diffusion to be in the range of 2.1-3.5 eV based on the fitting of PL data with simulated Cd profiles. Another attempt to characterize Cd redistribution upon rapid thermal annealing has been performed using secondary ion mass spectrometry (SIMS).…”

mentioning

confidence: 99%

See 1 more Smart Citation

Cd diffusion and thermal stability of CdZnO/ZnO heterostructures

Azarov¹,

Zhang²,

Svensson³

et al. 2011

Applied Physics Letters

View full text Add to dashboard Cite

Structural properties and thermal stability of CdZnO/ZnO heterostructures grown on sapphire substrate by metal-organic vapor phase epitaxy (MOVPE) have been studied. Zn/Cd interdiffusion and Cd evaporation appear as key factors limiting the thermal stability of CdZnO/ZnO heterostructures. Cd diffusion in MOVPE ZnO is found to start already at 600 C with an activation energy of $2.2 eV and yields a saturation in the Cd concentration at 0.1-1 at. %. The actual Cd content remaining in the samples upon annealing is determined by a competition between Cd evaporation via the surface and diffusion/segregation in the bulk. V

show abstract

mentioning

confidence: 99%

mentioning

confidence: 99%