Development of novel bulk AlN crystal growth method using Ni-Al solution

2023 Fiscal Year Final Research Report

• Project/Area Number: 20H02633
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 30010:Crystal engineering-related
• Research Institution: Tohoku University
• Principal Investigator: Adachi Masayoshi 東北大学, 多元物質科学研究所, 講師 (90598913)
• Project Period (FY): 2020-04-01 – 2024-03-31
• Keywords: 液相成長法 / 窒化アルミニウム

Outline of Final Research Achievements

AlN single crystals are expected to be a potential material exceeding SiC and GaN due to their wide bandgap energy and large breakdown field strength, however, low-cost mass production technology has not been established. In this research project, a novel solution growth method of AlN crystal using Ni-Al have developed.

Free Research Field

結晶工学

Academic Significance and Societal Importance of the Research Achievements

本研究課題により、Ni-Alを用いた新しいAlN単結晶の液相成長法が開発された。本研究課題での系統的な実験により、各成長条件が成長したAlN結晶に及ぼす影響が調査され、Ni-AlフラックスからのAlNの成長挙動を明らかにすることができた。これら一連の成果を元に、今後本手法の大型化を目指した研究を継続し、本手法の実用化を目指した研究を展開していく。