Tailoring solvent coordination for high-speed, room-temperature blading of perovskite photovoltaic films. Perovskite-filled membranes for flexible and large-area direct-conversion X-ray detector arrays. Highly narrowband perovskite single-crystal photodetectors enabled by surface-charge recombination. Handbook of Particle Detection and Imaging (Springer, 2019).įang, Y., Dong, Q., Shao, Y., Yuan, Y. Spatially resolved dark count rate of SiPMs. Characterization of large-area SiPM array for PET applications. in Advanced Technology and Particle Physics (ed. Advantages and pitfalls of the silicon photomultiplier (SiPM) as photodetector for the next generation of PET scanners. SiPM for fast photon-counting and multiphoton detection. Single-photon detectors for optical quantum information applications. Lidar with SiPM: some capabilities and limitations in real environment. Lightweight SiPM-based CeBr 3 gamma-ray spectrometer for radiation-monitoring systems of small unmanned aerial vehicles. The silicon photomultiplier: fundamentals and applications of a modern solid-state photon detector. Photocatalytic hydrogen generation from hydriodic acid using methylammonium lead iodide in dynamic equilibrium with aqueous solution. Perovskite light-emitting diodes with external quantum efficiency exceeding 20 per cent. Stabilizing perovskite-substrate interfaces for high-performance perovskite modules. This study opens a new application of photon counting for perovskites that uses their unique defect properties.Ĭhen, S. The zero-bias operation of perovskite detectors enables no drift of noise and detection property. The perovskite PCDs can collect γ-ray spectra with better energy resolution than SiPMs and maintain performance at high temperatures up to 85 ☌. It greatly suppresses dark count rate (DCR) from >20,000 counts per second per square millimetre (cps mm −2) to 2 cps mm −2 at room temperature, enabling much better response to weak light than SiPMs. We show that these shallow traps can be reduced by grain-size enhancement and surface passivation using diphenyl sulfide, respectively. Two shallow traps with energy depth of 5.8 ± 0.8 millielectronvolts (meV) and 57.2 ± 0.1 meV are identified in polycrystalline methylammonium lead triiodide, which mainly stay at grain boundaries and the surface, respectively. The photon-counting capability of perovskite photon-counting detectors (PCDs) is mainly determined by shallow traps, despite that deep traps also limit charge-collection efficiency. Here we show that self-powered polycrystalline perovskite photodetectors can rival the commercial silicon photomultipliers (SiPMs) for photon counting. Metal-halide perovskites (MHPs) have been successfully exploited for converting photons to charges or vice versa in applications of solar cells, light-emitting diodes and solar fuels 1, 2, 3, for which all these applications involve strong light.
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