Research Projects

UCLA Electrical Engineering Department

Here is a list of the current projects of Professor Huffaker’s group:

The aim of this project is to build GaSb photovoltaics for integrated Visible, Near Infrared and Short-Wave Infrared (VNS) detection. Current state of the art VNS sensors use either Ga on Si or InGaAs on InP. By leveraging an IMF array, it will be possible to build high sensitivity, inexpensive GaSb sensors with low dark currents for high performance sensing.

GaSb on GaAs for MWIR Emitters and Detectors

Research Projects

This project aims to establish novel growth techniques to form III-Sb-based materials on miscut Si substrates for related fundamental studies in material growth by using the interfacial misfit growth mode and their electronic/optoelectronic integrated device applications including lasers, detectors, solar cells and transistors.

Monolithic Active Silicon Nano-Photonics

Single photon source is one of the most remarkable specialties of single semiconductor quantum dot (QD) and several approaches to single photon sources by semiconductor QDs have been suggested. In this DARPA seeding program, we are looking to pursue a single photon pump that produces single photon on demand through the controlled tunneling of individual electrons and holes into a single patterned QD by an applied gate voltage.

Single-Photon Pump Source with a Patterned Quantum Dot Active Region

The aim of this research project is to model and design multi-wave infrared sensors from interfacial misfits. The current state of the art IMF detectors suffer from increased leakage current due to dangling bonds in the interfacial misfit array. Fundamental research into a highly conductive interface will allow for integrated, high performance sensors.

Integrated Multi-Wave Sensors Based on Highly Conductuve Interfacial Misfits

This project aims to establish novel growth techniques to form III-V nanopillars on various substrates for related fundamental studies in physics and electronic/optoelectronic device applications. Two growth schemes will be explored: the catalyst-free growth combined with nano-patterning and the metal-catalyzed VLS growth mode.

III-V Nanopillars Growth and Device Applications

Toward Efficient and High Power MWIR VECSELs and VCSELs