Simulation of the energy-band structure of superlattice of quaternary alloys of diluted nitrides

Dashkov A.S.,; Kostromin  N. A.,; Babichev  A. V.,; Goray L.I.,; Egorov A. Yu.,

doi:10.21883/sc.2023.03.56237.4163

Cited by 1 publication

(2 citation statements)

References 52 publications

(81 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The kpmethod is suitable for investigation of nanostructures larger than a few nanometers, including SMP SLs, as it was demonstrated in Refs. [36,50]. This method is also among the most appropriate methods for analyzing experimental data.…”

Section: N Ementioning

confidence: 99%

See 1 more Smart Citation

An advanced theoretical approach to study super-multiperiod superlattices: theory vs experiments

Dashkov,

Khakhulin,

Shapran

et al. 2024

J. Semicond.

View full text Add to dashboard Cite

A new theoretical method to study super-multiperiod superlattices has been developed. The method combines the precision of the 8-band kp-method with the flexibility of the shooting method and the Monte Carlo approach. This method was applied to examine the finest quality samples of super-multiperiod Al0.3Ga0.7As/GaAs superlattices grown by molecular beam epitaxy. The express photoreflectance spectroscopy method was utilized to validate the proposed theoretical method. For the first time, the accurate theoretical analysis of the energy band diagram of super-multiperiod superlattices with experimental verification has been conducted. The proposed approach highly accurately determines transition peak positions and enables the calculation of the energy band diagram, transition energies, relaxation rates, and gain estimation. It has achieved a remarkably low 5% error compared to the commonly used method, which typically results in a 25% error, and allowed to recover the superlattice parameters. The retrieved intrinsic parameters of the samples aligned with XRD data and growth parameters. The proposed method also accurately predicted the escape of the second energy level for quantum well thicknesses less than 5 nm, as was observed in photoreflectance experiments. The new designs of THz light-emitting devices operating at room temperature were suggested by the developed method.

show abstract

Section: N Ementioning

confidence: 99%

“…This method is also among the most appropriate methods for analyzing experimental data. The complexity of the kp-method increases with the number of bands considered in the calculation [34][35][36]53] . The initial simulation approach included only an approximation of the single band kp-method, which probably was the reason for poor accuracy.…”

Section: N Ementioning

confidence: 99%