Excitons with high binding energy (HBEE) provide a possible route toward room temperature sensing and future computing. In this project, we explore the physics and applications of materials and polariton systems with HBEE using ultrafast spectroscopy techniques, electronic and magnetic control, and materials and sample design. Materials of interest include organic molecules and polymers, 2D materials, perovskites, etc. Ultrafast optical techniques include TAS, time-resolved fluorescence, 2D spectroscopy, and pump-probe spectral interferometry. Opto-electronic device studies include design, fabrication, and measurement using NIST's nanofab, low temperature current-voltage, impedance and CV, electroluminescence, and photocurrent.