Perovskite Quantum Dot Array for Multi-Ultraviolet Photodetection

This work enhances spectrometer functionality for mixed ultraviolet (UV) light detection. We propose a paradigm-shifting architecture where a perovskite quantum dot array replaces conventional interferometric optics. Through halide compositional engineering, the array achieves wavelength-specific responsivity and enables spectral discrimination. Integrated with a multilayer perceptron (MLP) neural network, the system precisely determines compositional ratios in polychromatic UV mixtures. Reconstruction errors are minimized via supervised learning training.