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Ph.D. Proposal Oral Exam - Zachary Engel

Event Details

Thursday, November 18, 2021

10:00am - 12:00pm

Room 150, Clough Commons

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Event Details

Title:  Controlling Adatom Kinetics to Overcome Traditional Limitations for III-Nitride Ternary Alloys


Dr. Doolittle, Advisor

Dr. Yoder, Chair

Dr. Losego

Abstract: The objective of the proposed research is to explore growth kinetics based solutions to overcome limitations in materials used in III-Nitride based devices. The proposed research will address a number of growth-related challenges for AlGaN used in traditional UV LEDs and LDs, as well as investigate a previously understudied material, AlInN, as a replacement for both InGaN and AlGaN in many optical and photovoltaic devices. Further, a method for the formation of relaxed InGaN substrates will be investigated to create a solution for InGaN based LED growth. MME growth of high quality AlInN will be pursued, first at a single composition, then expanding to the entire composition range. Simultaneously, a method for the formation of AlxGa1-xN/AlyGa1-yN (x≠y) self-assembled superlattices (SASL) will be investigated. Finally, AlInN oxidation will be investigated in order to form relaxed InGaN substrates for optical devices.

Last revised November 12, 2021