EXPLORING PHYSICAL PROPERTIES OF GALLIUM OXIDE MICRO- AND NANO-STRUCTURES
Abstract
Optical and electrical properties in solids are intimately linked to the way that atoms are bonded and arranged in the space. This is particularly dramatic in oxides, which often display complex crystalline structure and several phases. Among them, Ga2O3 has been recently boosted due to its promising applications in high power electronics and UV solar-blind detectors. However, there is still need for investigation on how small variations in the bonding conditions (via defects, dopants or surfaces/interfaces) influence its optical and electrical properties. This project aims to study physical properties in Ga2O3 micro- and nanostructures through the light-matter interaction. Most of the current research activity is focused on electronic properties on bulk ?-Ga2O3 and thin films, while exploring the optical properties arisen from the ultra wide band gap, such as solar blind UV photo-detectors or tunable light emitters sources (diodes or lasers), has been less studied. In this project, we will fabricate undoped and doped Ga2O3 micro- and nanostructures by a thermal method that provide samples with high crystalline quality, smooth surfaces, and few extended defects. We will use beam probes (electrons and photons) to investigate the opto-electronic properties of the samples through the beam-sample interaction mechanisms. A combined experimental and theoretical approach will be followed in order to get a better understanding of the light generation, absorption and propagation mechanisms inside the Ga2O3 material. The expected results will get Ga2O3 micro- and nanostructures onto the next step in the design of optoelectronic devices adapted for extreme environments, bridging the gap between the micro and the nanoscale.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 11, 2021
- Source ID
- FA86552017013
Entities
People
- Bianchi Mendez
Organizations
- Air Force Office of Scientific Research
- Complutense University of Madrid
- United States Air Force