Strain effects on optical polarisation properties in (11(2)over-bar2) plane GaN films

We present the theoretical results of the electronic band structure of wurtzite GaN films under biaxial strains in the (11 (2) over bar2)-plane The calculations are performed by the kappa p perturbation theory approach through using the effective-mass Hamiltonian for an arbitrary direction The results show that the transition energies decrease with the biaxial strains changing from -0 5% to 0 5% For films of (11 (2) over bar2)-plane, the strains are expected to be anisotropic in the growth plane Such anisotropic strains give rise to valence band mixing which results in dramatic change in optical polarisation property The strain can also result in optical polarisation switching phenomena Finally, we discuss the applications of these properties to the (11 (2) over bar2) plane GaN based light emitting diode and lase diode

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Made available in DSpace on 2010-12-28T00:59:56Z (GMT). No. of bitstreams: 1 Strain effects on optical polarisation properties in (11(2)over-bar2) plane GaN films.pdf: 1086425 bytes, checksum: 60f38cb3609ec6369615f3fc5393e9ee (MD5) Previous issue date: 2010

Project supported by the National Basic Research Program of China (Grant Nos 2006CB604908 and 2006CB921607), and the National Natural Science Foundation of China (Grant Nos 60625402, 60990313 and 60990311)

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Project supported by the National Basic Research Program of China (Grant Nos 2006CB604908 and 2006CB921607), and the National Natural Science Foundation of China (Grant Nos 60625402, 60990313 and 60990311)