【Member Intro】Institute of Functional Crystal, Tianjin University of Technology —— Regular Member

Profile

  The Functional Crystal Institute of Tianjin University of Technology was established in 2017, in response to the national strategy of development driven-by-innovation, and the implementation of the "Double First-Class" construction, aiming at the forefront of science and technology and the major national strategic needs. Relying on the research platform "Key Laboratory of Tianjin Photoelectric Display Materials and Devices", Functional Crystal Institute invested 200 million yuan to set up a complete set of research equipment related to crystal field, with new crystal material exploration platform, large-size crystal growth platform, research and development platform of crystal processing coating and device, laser technology and laser machine development platform, research and development platform of biomedical testing equipment based on new laser, research and development platform of crystal and laser application industrialization and other six research and development platform.

  The Functional Crystal Institute of Tianjin University of Technology, academic leader of which is Wu Yicheng academician, based on key laboratory of functional crystal materials of Tianjin. It gathers famous professors at and abroad into its outstanding talent team, such as professor Hu Zhanggui--who is listed in "Plan of One Hundred Expert" by Chinese Academy of Sciences, professor Ye Ning--who gets support from "the National Science Fund for Distinguished Young Scholars", and professor Xu Yongkuan--who ranked in the first tier of 131 Innovative Talent Training Project. Standing in the frontier for the development of science and technology, facing the demand of national development and Tianjin regional economic development, the institute develops photoelectric function crystal materials and related device application, guided by guaranteeing the national major demand, centering around promoting the industrial development, aiming to work out key generic technology problems of crystal industry. The institute focuses on breaking through and mastering the key technology, serving our country, providing an continuous supply of support and motivation for the formation and development of high-tech enterprises and enterprise group.

  The Functional Crystal Institute has formed a complete innovation chain from research on advanced functional crystal materials, to the application of all-solid-state laser light source development. It is trying to build a crystal materials and device research base which is world-famous and  first-class in China, to support basic research, meet the national demand, and promote crystal related high-tech industry rapid development.

Achievements

（1）Large-size gallium oxide growth equipment

  Gallium oxide has wider band gap than silicon carbide and gallium nitride. With lower manufacturing costs, it has unique advantages in higher power applications. In response to the demand for large size and high quality β-Ga₂O₃ single crystal material from gallium oxide based SBD and MOSFET power devices, the institute set up gallium oxide crystal growth equipment for edge-defined film-fed growth(EFG), laser floating zone method(LFZ), and cold crucible method, equipped with advanced crystal processing and detection equipment. The institute is planning to purchase thermal field and crucible in order to carry out gallium oxide crystal growth research as soon as possible.

Gallium Oxide Crystal Growth Furnace for EFG

Crystal Growth Furnace for LFZ

（2）Oxide Crystal Growth

  Team members have work experience of many years on oxide crystal growth such as J.Czochralski, edge-defined film-fed growth and cold crucible method. Meanwhile, they also have rich experience in design and manufacture equipment of the single crystal growth, thermal field simulation and process control. They have made outstanding achievements in functional crystal growth such as laser, nonlinear, electric, piezoelectric, optical folding.

YAG Crystal

YVO₄ Crystal

LBO Crystal

（3）Other new technology, new equipment development on wide band gap semiconductor single crystal material

  The institute focuses on the development of new technologies and equipment for wide-band gap semiconductor monocrystalline materials such as silicon carbide, gallium nitride and aluminum nitride and boron nitride, Drawing on the mature growth technology of the first and second generation of semiconductor single crystal materials, the institute developed the single-crystal growth equipment of silicon carbide and aluminum nitride by liquid-phase method, and obtain high quality semiconductor single crystal growth processby liquid-phase method; Besides, on the basis of the physical vapor transmission growth method of silicon carbide, the institute has developed an improved PVT method for continuous vapor source supply, which guaranteed the vapor ratio balance during growth. And it further designed the single crystal growth equipment of HTCVD silicon carbide, and developed the corresponding 4-6-inch single crystal growth process.