Transformative Growth of Semi-insulating and High Thermal Conducting BAs Bulk Crystals and Thin Film
Abstract
Transformative Growth of Semi-insulating and High Thermal Conducting BAs Bulk Crystals and Thin Films for Thermal Management of Elec,tronics Dr. Bing Lv, Associate Professor Department of Physics The University of Texas at Dallas, Richardson, TX 75080Phone Number:, (972)-883-3806, Email: blv@utdallas.eduONR Program Manager: Dr. Mark S. Spector Project Abstract (Approved for Public Release):Due, to the high power densities and limited thermal conductivities of existing electronic materials, near-junction hot spots have prese,nted a major challenge to the reliability and energy efficiency of the solid-state electronic devices. Efforts to improve heat dissi,pation have led to the exploration of novel semiconductor materials with high thermal conductivity, including boron arsenide (BAs)., The experimental verified high thermal conductivity > 1000 W/m/K, relatively large band gap ~2 eV, and theoretically proposed high, electron/hole mobility for BAs suggest its future bright potential either as the active device material or as heat spreading layer, via heterogeneous system integration for thermal management of electronics. The objectives of the proposed project are focused on e,xperimental efforts to grow large size and high quality BAs bulk crystals or thin films with simultaneously high thermal conductivit,y, low extrinsic carrier concentration, and high mobility for thermal management of electronics, power electronics and radio-frequen,cy (RF) frequency electronics. We particularly will focus our efforts on exploring several transformative synthetic technologies tha,t are adaptive and scalable with the semiconductor infrastructures for future naval applications. We shall also look for various way,s to grow or heterogeneously integrate BAs crystalline substrates with different wide-bandgap semiconductor devices, to test their g,rowth/integration compatibility, and meanwhile investigate the cooling efficiency and possible the interface thermal conductance for, these heterogeneous structures. The proposed work will make a significant technological impact to help address the increasingly ser,ious heat dissipation issues in high performance electronics and optoelectronics, provide the necessary fundamental research for ena,bling scientific progress and breakthroughs in advanced naval power and energy systems science and technology to power the Navy equi,pment of the future, and meet the mission of the Office of Naval Research (ONR) for ?development of technologies to efficiently acqu,ire, transport, and reject heat and enable higher power density electronic system?. The project will actively involves undergraduate, training, extensive science education and outreach programs to enhance interest of K-12 students and the general public in science, as well.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 08, 2022
- Source ID
- N000142212755
Entities
People
- Bing Lv
Organizations
- Office of Naval Research
- United States Navy
- University of Texas at Dallas