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Blue light emitting diodes grown on freestanding (11-20) a-plane GaN substrates
Liu, J. P., Limb, J. B., Ryou, J. .-H., Yoo, D., Horne, C. A., Dupuis, R. D., Wu, Z. H., Fischer, A. M., Ponce, F. A., Hanser, A. D., Liu, L., Preble, E. A., & Evans, K. R. (2008). Blue light emitting diodes grown on freestanding (11-20) a-plane GaN substrates. Applied Physics Letters, 92(1), Article 011123. https://doi.org/10.1063/1.2832645
Visible blue light emitting diodes have been produced on freestanding nonpolar GaN (11-20) a-plane substrates by metal-organic chemical vapor deposition. The growth conditions have been optimized for smooth growth morphology of GaN nonpolar homoepitaxial layers without surface features, leading to light emitting diode epitaxial structures that are free of crystalline defects such as threading dislocations and stacking faults. Electroluminescence of light emitting diodes exhibit peak wavelengths of similar to 450 nm and are independent of current level at low current densities before the heating effects are evidenced. (c) 2008 American Institute of Physics.
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