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Institute of Electrical and Electronics Engineers, IEEE Photonics Journal, 2(7), p. 1-8, 2015

DOI: 10.1109/jphot.2015.2415672

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The Effect of Tensile Strain on Optical Anisotropy and Exciton of m-Plane ZnO

Journal article published in 2015 by H. H. Wang, J. S. Tian, C. Y. Chen, H. H. Huang, Y. C. Yeh, P. Y. Deng, L. Chang, Y. H. Chu ORCID, Y. R. Wu ORCID, J. H. He
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

The near band edge emission of the tensile-strained $m$-plane ZnO film grown on (112) $hbox{LaAlO}_{3} $ substrates shows abnormal low polarization degree ( $rho = 0.1$) . The temperature dependency of polarization degree clarifies the origins of different emission peaks. In tensile-strained m-plane ZnO, the [0001] polarized state is upper shifted and is overlapping with the [ $11overline{2} 0$] polarized state. This phenomenon causes the abnormal low polarization degree and reveals the effect of strain on the emission anisotropy of $m$-plane ZnO.