Developing next-generation sensors requires materials with tailored optoelectronic properties capable of detecting subtle molecular changes. Achieving this performance requires going beyond intrinsic material characteristics through precise materials engineering. This seminar presents the systematic engineering of metal halide perovskites, utilizing them as a unique tool to address these challenges.

I will describe our multi-level approach using room-temperature synthesis methods: compositional control through ion exchange, morphological optimization, surface functionalization for environmental stability, and photo-induced modification using ultrafast lasers. These strategies enable precise tailoring of electronic, structural, and surface properties relevant to sensing performance.

I will discuss how these specific material features determine their application in gas-phase detection targeting inorganic gases and Volatile Organic Compounds (VOCs) for environmental monitoring, breath diagnostics, and food safety, as well as liquid-phase sensing for aqueous contaminants. Both lead-based and lead-free architectures will be examined, addressing the balance between performance and sustainability.

Throughout the seminar, I will emphasize structure-property-performance correlations, demonstrating how systematic materials design optimizes key sensor metrics: sensitivity, selectivity, stability, and response speed. The work illustrates how fundamental materials science translates into practical devices, while introducing a multimodal sensing approach for comprehensive and selective molecular recognition.