Basic ammonothermal growth of Gallium Nitride – State of the art, challenges, perspectives

Publication date: Available online 2 June 2018Source: Progress in Crystal Growth and Characterization of MaterialsAuthor(s): M. Zajac, R. Kucharski, K. Grabianska, A. Gwardys-Bak, A. Puchalski, D. Wasik, E. Litwin-Staszewska, R. Piotrzkowski, J. Z Domagala, M. BockowskiAbstractRecent progress in ammonothermal technology of bulk GaN growth in basic environment is presented and discussed in this paper. This method enables growth of two-inch in diameter crystals of outstanding structural properties, with radius of curvature above tens of meters and low threading dislocation density of the order of 5 × 104 cm−2. Crystals with different types of conductivity, n-type with free electron concentration up to 1019 cm−3, p-type with free hole concentration of 1016 cm−3, and semi-insulating with resistivity exceeding 1011 Ω cm, can be obtained. Ammonothermal GaN of various electrical properties is described in terms of point defects present in the material. Potential applications of high-quality GaN substrates are also briefly shown.
Source: Progress in Crystal Growth and Characterization of Materials - Category: Chemistry Source Type: research

Related Links:

Publication date: June 2020Source: Journal of Functional Foods, Volume 69Author(s): Linlin Wang, Shi Cen, Gang Wang, Yuan-kun Lee, Jianxin Zhao, Hao Zhang, Wei Chen
Source: Journal of Functional Foods - Category: Nutrition Source Type: research
Publication date: June 2020Source: Journal of Functional Foods, Volume 69Author(s): Mingsi Xie, Jie Liu, Ziyuan Wang, Baoguo Sun, Jing Wang
Source: Journal of Functional Foods - Category: Nutrition Source Type: research
Find out what urologists need to know about the diagnosis and management of extramammary Paget's disease.Translational Andrology and Urology
Source: Medscape Today Headlines - Category: Consumer Health News Tags: Urology Journal Article Source Type: news
A novel approach using deep neural network frameworks shows promise for the diagnosis of basal-cell carcinoma via a smartphone camera.The British Journal of Dermatology
Source: Medscape Today Headlines - Category: Consumer Health News Tags: Dermatology Journal Article Source Type: news
In this commentary, the authors address the controversy surrounding the health benefits of low-carbohydrate diets.European Heart Journal
Source: Medscape Today Headlines - Category: Consumer Health News Tags: Cardiology Journal Article Source Type: news
A newly developed model to profile risk for Zika virus emergence provides important information for prevention efforts and resource utilization.Emerging Infectious Diseases
Source: Medscape Today Headlines - Category: Consumer Health News Tags: Infectious Diseases Journal Article Source Type: news
What might account for the apparent paradox that while obesity and AF are clearly related, overweight and obese patients with AF may have a better prognosis than healthy-weight patients?American Journal of Cardiovascular Drugs
Source: Medscape Today Headlines - Category: Consumer Health News Tags: Cardiology Journal Article Source Type: news
Source: CNN.com - Health - Category: Consumer Health News Source Type: news
Source: CNN.com - Health - Category: Consumer Health News Source Type: news
The New York governor signed an order to bring in additional funeral directors as the number of coronavirus cases in the state outpaced all countries except the United States.
Source: CNN.com - Health - Category: Consumer Health News Source Type: news
More News: Environmental Health