Growth of bulk GaN crystal by Na flux method

M. Imade; N. Miyoshi; M. Yoshimura; Y. Kitaoka; T. Sasaki; Y. Mori

doi:10.1117/12.877114

2 March 2011 Growth of bulk GaN crystal by Na flux method

M. Imade, N. Miyoshi, M. Yoshimura, Y. Kitaoka, T. Sasaki, Y. Mori

Proceedings Volume 7939, Gallium Nitride Materials and Devices VI; 793902 (2011) https://doi.org/10.1117/12.877114
Event: SPIE OPTO, 2011, San Francisco, California, United States

Abstract

In this paper, we reported the recent advances in the growth of GaN crystals on GaN templates and spontaneously nucleated GaN seeds by Na flux method. In the growth on GaN templates, it was clarified that the growth mode could be controlled by changing the flux composition. Based on the changes in the growth mode under different flux compositions, a growth sequence that is effective for the growth of thick GaN substrates with a low dislocation density was proposed. In the growth on pyramidal GaN seeds, we investigated the dependence of the growth rate, crystallinity and the growth habit on the flux composition. Results showed that a low Ga composition was preferred to grow high-crystallinity prismatic GaN crystals with a high growth rate. When a spontaneously nucleated GaN seed was used, a bulk GaN crystal with a hexagonal pillar consisting of six m-facets, and its length and diameter were 10 mm and 8 mm, respectively, was obtained. Furthermore, we found that the addition of Ca and Li to Ga-Na melt improved transparency of GaN crystals grown on pyramidal GaN seeds.

Citation Download Citation

M. Imade, N. Miyoshi, M. Yoshimura, Y. Kitaoka, T. Sasaki, and Y. Mori "Growth of bulk GaN crystal by Na flux method", Proc. SPIE 7939, Gallium Nitride Materials and Devices VI, 793902 (2 March 2011); https://doi.org/10.1117/12.877114

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available