Wurtzite BAlN and BGaN alloys for heterointerface polarization engineering
Type
ArticleAuthors
Liu, Kaikai
Sun, Haiding

Alqatari, Feras
Guo, Wenzhe

Liu, Xinwei
Li, Jingtao
Torres Castanedo, Carlos G
Li, Xiaohang

KAUST Department
Advanced Semiconductor LaboratoryComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
KAUST Grant Number
REP/1/3189-01-01BAS/1/1664-01-01
Date
2017-11-30Online Publication Date
2017-11-30Print Publication Date
2017-11-27Permanent link to this record
http://hdl.handle.net/10754/626289
Metadata
Show full item recordAbstract
The spontaneous polarization (SP) and piezoelectric (PZ) constants of BxAl1-xN and BxGa1-xN (0 ≤ x ≤ 1) ternary alloys were calculated with the hexagonal structure as reference. The SP constants show moderate nonlinearity due to the volume deformation and the dipole moment difference between the hexagonal and wurtzite structures. The PZ constants exhibit significant bowing because of the large lattice difference between binary alloys. Furthermore, the PZ constants of BxAl1-xN and BxGa1-xN become zero at boron compositions of ∼87% and ∼74%, respectively, indicating non-piezoelectricity. The large range of SP and PZ constants of BxAl1-xN (BAlN) and BxGa1-xN (BGaN) can be beneficial for the compound semiconductor device development. For instance, zero heterointerface polarization ΔP can be formed for BAlN and BGaN based heterojunctions with proper B compositions, potentially eliminating the quantum-confined Stark effect for c-plane optical devices and thus removing the need of non-polar layers and substrates. Besides, large heterointerface polarization ΔP is available that is desirable for electronic devices.Citation
Liu K, Sun H, AlQatari F, Guo W, Liu X, et al. (2017) Wurtzite BAlN and BGaN alloys for heterointerface polarization engineering. Applied Physics Letters 111: 222106. Available: http://dx.doi.org/10.1063/1.5008451.Sponsors
The KAUST authors would like to acknowledge the support of GCC Research Program REP/1/3189-01-01 and KAUST Baseline Fund BAS/1/1664-01-01.Publisher
AIP PublishingJournal
Applied Physics LettersAdditional Links
http://aip.scitation.org/doi/10.1063/1.5008451ae974a485f413a2113503eed53cd6c53
10.1063/1.5008451