Raman spectroscopy is a valuable and versatile tool used across various fields. Collected Raman light provides information on fundamental molecular bond vibrations in a minimally perturbing and label-free manner, revealing specific molecular fingerprints which can be later used to identify the sample. Technological advances over the last decade have led to different Raman spectroscopy modalities using light to interrogate vibrations of the molecules on the surface or deeper inside samples of interest such as cells or tissues. In this talk, I will focus on deep Raman spectroscopy (spatially- offset and transmission modalities) and will elaborate on relevant biological applications such as storage lesion assessment in transfusion blood bags, cell therapy and cancer diagnostics.

Organic light-emitting transistors (OLETs) represent an emerging device platform that uniquely combines transistor switching with light generation, sensing, and control capabilities. Unlike their well-established diode counterparts, OLETs offer distinct advantages: simpler and more cost-effective fabrication, potentially lower power consumption, easier integration into complex architectures, and, remarkably, higher efficiency when using identical materials.

Our research focuses on understanding how field-effect mechanisms influence device performance, particularly examining how horizontal charge transport affects charge carrier dynamics, exciton formation, and radiative decay processes. We pursue a systematic optimization strategy, independently refining each device component, from efficient luminescent emitters, high-mobility semiconductors and high-k dielectric layers, including high-k oxides and sustainable (bio)polymers. A key focus area of our work involves thermally-activated delayed fluorescence (TADF) molecules, which enable efficient triplet harvesting without relying on scarce heavy-metal complexes, while also offering remarkable emission tunability through interface engineering.  Our findings demonstrate that OLETs are potentially competitive and efficient alternative in organic light-emission technologies, while not only advancing fundamental understanding of light generation mechanisms in field-effect devices but also paving the way toward more sustainable, high-performance optoelectronic platforms.