This talk will introduce a relatively less known family of crystalline, organic-inorganic hybrid materials based on II-VI compounds [1,2], such as ZnTe(C2N2H8)0.5. On the one hand, they exhibit a number of unusual properties, such as greatly enhanced optical absorption and exciton binding energy compared to the II-VI counterpart , favorable band structures for p-type transparent conductive materials , zero-thermal expansion , peculiar elastic properties . On the other hand, because of the exceptionally high level of crystallinity, they reveal a novel way to obtain defect-free heterostructures with perfect interfaces ; and because of their unprecedent long-term stability (over 15 years under ambient conditions), they can uniquely serve as prototype systems to understand the intrinsic and extrinsic degradation mechanisms [5,6]. Comparison with hybrid halide perovskites will be offered.
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