Expanding the toolbox of metal-free organic halide perovskite for X-ray detection

X-ray detection plays a crucial role across various aspects of our daily lives, encompassing medical diagnoses, security screenings, and non-destructive examinations in industrial settings. Given the wide array of application contexts, a wealth of opportunities is entailed with the practical utilization of both organic and inorganic X-ray detection materials. A novel and promising contender in this realm is the emergence of metal-free organic halide perovskites (O-PVSKs), offering great opportunities and tremendous potential in X-ray detection. This potential can be attributed to the distinct crystalline configuration of O-PVSKs, where organic constituents are structured into an ABX3 perovskite arrangement. Consequently, O-PVSKs exhibit captivating characteristics reminiscent of organic materials, such as lightweight nature and modifiability, all while retaining the distinctive traits associated with halide perovskites ranging from diverse structures to tunable optoelectronic properties. This review article delves into the intrinsic attributes of O-PVSKs and critically examines the viability of O-PVSKs in X-ray detection, through which key features that distinguish O-PVSKs from traditional organic semiconductors and perovskites are outlined. This is followed by a perspective given on their future avenues for exploration.