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In 1981 he started afresh the growth of GaN by MOVPE at Nagoya University , and in 1985 he and his group succeeded in growing high-quality GaN on sapphire substrate by pioneering the low-temperature ( LT ) buffer layer technology .
 organization: Nagoya University
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: Nagoya University