Research Research areas and highlights AllHeterovalent semiconductor structures: MBE growth and characterizationLEDs and electroluminescence refrigerationPhotodetectorSolar cellUndergraduate research Undergraduate Research Research, Undergraduate research II-VI Semiconductor Solar Cells Research, Solar cell Multijunction solar cell testing Research, Solar cell GaAs high efficiency ultrathin film solar cells Research, Solar cell Theory Research, Solar cell Type-II Superlattice Semiconductors for Infrared Photodetectors Photodetector, Research Heterovalent Semiconductor Structure: MBE growth and characterization Heterovalent semiconductor structures: MBE growth and characterization, Research LEDs and Electroluminescence Refrigeration LEDs and electroluminescence refrigeration, Research Two Color Detectors Photodetector, Research