To meet the needs of high end gas sensing applications, new materials in suitable device designs are required that can challenge the state-of-the-art, especially concerning affinity towards target compounds within a complex background. Due to their high specific surface area and tailorable pore interiors, metal-organic frameworks (MOFs) serve as promising candidates to function as active coatings in next-generation sensors. However, studies on their integration in optoelectronic devices are rare due to the lack of suitable deposition methods. In this work, photonic crystal sensors functionalized with MOF thin films, are fabricated through a cleanroom-compatible process. The devices are capable of detecting low concentrations of volatile organic compounds, and thus, enable new avenues towards scalable fabrication and integration of miniature MOF-based gas sensor arrays.
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