Jaramillo Research GroupElectronic Materials
Core Emphasis• Chalcogenide materials• Semiconductors and dielectrics• Defect- and phase-control• Thin film growth & characterization
Application areas• Chemical sensing• Integrated photonics• Neuromorphic computing• Renewable energy - photovoltaics
Complex chalcogenides
Photoconductors
Phase-change materials
Complex sulfides and selenides in the perovskite, LiNbO3, and Ruddlesden-Popper structure types
Thermodynamic growth window for ZnSnS3-on-GaN
Installing the MBE At the CVD tube furnace
Visualizing BaZrS3 layer-by-layer growth
• Theory-guided materials discovery• Molecular beam epitaxy (MBE)
• Semiconductors for visible & IR applications
Making materials in the cleanroom
At the measurement probe station
• Defect-engineering• Chemical bath deposition (CBD)
• Chemical sensing• Neuromorphic computing
Illumination Trapping: conductive state
Insulating state
Charge state transitions
conduction band
defect level
valence band
Controlling responsivity of CdS photoconductors through materials processingGeneric scheme for photoconductive chemical sensing
Electron-beam evaporation in the MBE
Prof. Rafael Jaramillo
• Training in condensed matter physics & materials science
• Broadly interested in:• Semiconductor materials &
devices• Renewable energy technologies• Information technologies• Solid state physics• Experimental technique
development
• Theory-guided materials design• 2D materials research
• Active materials for integrated photonics
Calculated VIS-IR response of monolayer MoS2 in 2H and 1T’ phases