Ali Javey (Advisor)

Unusual device architectures may open up unexpected opportunities for optoelectronic devices. For example, the range of luminescent materials that can be easily integrated in light-emitting devices is often limited by material processing and band alignment issues. This hinders the development of electroluminescent devices at extreme wavelengths and the use of electroluminescence spectroscopy as an analytical technique. In this thesis, I explore an unconventional scheme of electrically-driven light emission based on pulsed metal-oxidesemiconductor capacitor devices. This concept can be used...

Miniaturized spectrometers in the mid-infrared (MIR) are critical in developing next-generation portable electronics for advanced sensing and analysis. The bulky gratings or detector/filter arrays in conventional micro-spectrometers set a physical limitation to their miniaturization. In this work, we demonstrate a single-pixel MIR micro-spectrometer that reconstructs the sample transmission spectrum by a spectrally dispersed light source instead of spatially grated light beams. The spectrally tunable MIR light source is realized based on the thermal emissivity engineered via the metal-...

Flexible optoelectronics is a rapidly growing field, with a wide range of potential applications. From wearable sensors to bendable solar cells, curved displays, and curved focal plane arrays, the possibilities are endless. The criticality of flexible photodetectors for many of these applications is acknowledged, however, devices that are demonstrated thus far are limited in their spectral range. In this study, flexible photodetectors are demonstrated using a VOx nanoparticle ink, with an extremely broad operating wavelength range of 0.4 to 20 µm. This ink is synthesized using a simple and...