Photodetectors Based on Colloidal Quantum Dots

Currently, colloidal quantum dots (CQDs) have received considerable attention due to their unique properties, such as the ability to control the band gap in a wide range, the tuning of absorption spectra, the possibility of precipitation from solutions, etc. These properties are especially important for research in the field of detection of electromagnetic radiation in the visible and infrared ranges. The paper presents an overview of photodetectors based on colloidal quantum dots lists the most commonly used materials for creating these devices. Technologies for creating efficient and high-speed photodetectors are described. Particular attention is paid to photodetectors based on metal chalcogenides, which are sensitive in the near infrared range. Advantages and disadvantages of photodetectors based on colloidal quantum dots are described. As well as the results of the introduction of CdSe-based CQDs into organic photosensitive structures of the CuPc/PTCDA type are presented.