Christian K Kisielowski

Title: Innovations of Christian K Kisielowski

Introduction

Christian K Kisielowski is a notable inventor based in Piedmont, California. He has made significant contributions to the field of materials science, particularly in the development of gallium nitride films. With a total of 2 patents, his work has implications for various applications in electronics and optoelectronics.

Latest Patents

Kisielowski's latest patents focus on the growth of Group III-nitride thin films using molecular beam epitaxy (MBE) in the presence of bismuth. The first patent describes a method for growing gallium nitride films at temperatures of about 1000 K or less. This innovative approach allows for the fabrication of gallium nitride films that can be doped with magnesium or other dopants. The films are grown on sapphire substrates using a hollow anode Constricted Glow Discharge nitrogen plasma source. Notably, when bismuth is used as a surfactant, the resulting two-dimensional gallium nitride crystal sizes range between 10 µm and 20 µm. This size is 20 to 40 times larger than those observed when gallium nitride films are grown without bismuth. The increase in crystal size is attributed to bismuth inducing a higher surface diffusion coefficient for gallium, with a calculated value revealing a virtual substrate temperature significantly higher than the actual one.

Career Highlights

Kisielowski is affiliated with the University of California, where he continues to advance research in materials science. His work has garnered attention for its potential to enhance the performance of electronic devices.

Collaborations

One of his notable collaborators is Michael Rubin, with whom he has worked on various research projects.

Conclusion

Christian K Kisielowski's innovative work in the field of gallium nitride films showcases his expertise and contributions to materials science. His patents reflect a commitment to advancing technology in electronics and optoelectronics.