Abstract <p>The use of graphene in photodetecting devices is an urgent area of modern scientific research due to the unique optical and electrical properties of this material. For example, the absence of a band gap and the linear law of dispersion of free charge carriers makes it possible to register photons in a wide range of wavelengths and with a fast response time of material properties to external electromagnetic radiation. However, due to the low level of incident light absorption, the applicability of graphene devices is limited. As a result, increasing the efficiency of light absorption by graphene is one of the key tasks for the successful introduction of graphene into photodetecting devices. In this paper, a method for increasing the photosensitivity and external quantum efficiency of graphene based on modification of the graphene surface by titanium particles is demonstrated. The modification is carried out by magnetron sputtering, which significantly improves the characteristics of graphene-based photodetection devices.</p>