Recently, the research team led by Professor Li Cheng and Associate Professor Chen Mengyu from the college has made a notable breakthrough in the realm of perovskite miniature spectrometers. Their research, presented in the paper 'Precisely-Controlled Gradient-Bandgap Perovskite Photodiode Arrays Facilitate the Accurate Reconstruction of Complex Spectra for Color Decryption Applications,' was published in ACS Photonics, a prestigious international journal in the field of optics. This study marks the first successful fabrication of relevant devices using the non-uniform time ion exchange method.