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9th International Conference on Optics, Photonics & Lasers

Berlin, Germany

Cheng Yen Chien

Cheng Yen Chien

Graduate Institute of Electronics Engineering – NTU, Taiwan


Cheng Yen Chien is PhD in Graduate Institute of Electronics Engineering, National Taiwan University. He has his expertise in electronic device, optoelectronics, nanotechnology, electron-beam lithography and application and III-V material. He demonstrated a new pattern design based on sapphire that effectively reduced dislocation density on surface GaN. The foundation is based on variety of GaN stress and strain which also modulates growth rate with GaN by MOCVD. This approach is responsive to all stakeholders and has a different way of focusing.


Abstract : Defect reduction of GaN growing on dome-shaped patterned - sapphire substrates