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51. X. Cao, S. LeBoeuf, K. Kim et al., Investigation of radiative tunneling in GaN/InGaN single
quantum well light-emitting diodes. Solid-State Electron. 46(12), 2291–2294 (2002)
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149
50. E.F. Schubert, Light-Emitting Diodes. 2nd ed. Cambridge University Press (2006)
51. X. Cao, S. LeBoeuf, K. Kim et al., Investigation of radiative tunneling in GaN/InGaN single
quantum well light-emitting diodes. Solid-State Electron. 46(12), 2291–2294 (2002)
52. H. Chung, R. Choi, M. Kim et al., Improved performance of GaN-based blue light emitting
diodes with InGaN/GaN multilayer barriers. Appl. Phys. Lett. 95(24), 241109 (2007)