optoelectronic industries, flexible optoelectronic devices have been attracting more and more attention owning to their lightweight, better portability, wearable, and low manufacturing cost. [4] Recently, significant breakthroughs of flexible PDs based on various nanomaterials, including quantum dots, [5] nanowires, [6] and 2D layered materials, [7] have been achieved in mechanical stability, flexibility, and stretchability. [8] Particularly, organic-inorganic hybrid perovskite materials have become a promising candidate for flexible PDs with high performances, [9] owning to their large optical absorption coefficient in visible-light range, tunable bandgaps, prolonged carrier life-time, and diffusion lengths. [10] However, a few reports are available about large-scale high-resolution and flexible PD arrays based on the perovskite materials for the real-time light trajectory and the light imaging.The key challenge for large-scale PD arrays based on the perovskite materials is the appropriate and effective synthesis technique for the miniaturization and integration of the device. Traditional fabrication processes, such as chemical vapor deposition (CVD), [11] vapor-phase epitaxial growth method, [12] andThe quest for novel deformable image sensors with outstanding optoelectronic properties and large-scale integration becomes a great impetus to exploit more advanced flexible photodetector (PD) arrays. Here, 10 × 10 flexible PD arrays with a resolution of 63.5 dpi are demonstrated based on as-prepared perovskite arrays for photosensing and imaging. Large-scale growth controllable CH 3 NH 3 PbI 3−x Cl x arrays are synthesized on a poly(ethylene terephthalate) substrate by using a two-step sequential deposition method with the developed Al 2 O 3 -assisted hydrophilic-hydrophobic surface treatment process. The flexible PD arrays with high detectivity (9.4 × 10 11 Jones), large on/off current ratio (up to 1.2 × 10 3 ), and broad spectral response exhibit excellent electrical stability under large bending angle (θ = 150°) and superior folding endurance after hundreds of bending cycles. In addition, the device can execute the functions of capturing a real-time light trajectory and detecting a multipoint light distribution, indicating that it has widespread potential in photosensing and imaging for optical communication, digital display, and artificial electronic skin applications. Perovskite PhotodetectorsThe ORCID identification number(s) for the author(s) of this article can be found under https://doi.Optoelectronic devices, including photodetectors (PDs), [1] light-emitting diodes (LEDs), [2] and solar cells (SCs), [3] have a vast applications in our daily life, such as optoelectronic communication, imaging technology, environmental monitoring, and digital display. With the development of emerging

Solution‐processed lead halide perovskites are considered one of the promising materials for flexible optoelectronics. However, the array integration of ultrathin flexible perovskite photodetectors (PDs) remains a significant challenge limited by the incompatibility of perovskite materials with manufacturing techniques involving polar liquids. Here, an ultrathin (2.4 µm) and conformable perovskite‐based PD array (10 × 10 pixels) with ultralight weight (3.12 g m−2) and excellent flexibility, is reported. Patterned all‐inorganic CsPbBr3 perovskite films with precise pixel position, controllable morphology, and homogenous dimension, are synthesized by a vacuum‐assisted drop‐casting patterning process as the active layer. The use of waterproof parylene‐C film as substrate and encapsulation layer effectively protects the perovskite films against penetration of polar liquids during the peeling‐off process. Benefitting from the encapsulation and ultrathin property, the device exhibits long‐term stability in the ambient environment, and robust mechanical stability under bending or 50% compressive strain. More importantly, the ultrathin flexible PD arrays conforming to hemispherical support realize imaging of light distribution, indicating the potential applications in retina‐like vision sensing.