arXiv subjects

Sergey Svyatodukh

Publications and source records attributed to Sergey Svyatodukh.

2 recordsLinked to original sources

arXiv2023

High-resistivity niobium nitride films for unity-efficiency SMSPDs at telecom wavelengths and beyond

The sensitive element of superconducting single-photon detectors made in the form of a microstrip promise to resolve significant limitations caused by their typical design. However, attention should be paid to the problem of deterioration of the detection efficiency of devices with an increase of the width of the superconducting strip from nano- to microscale. This article demonstrates a possibility of achieving highly saturated detection efficiency of superconducting microstrip single-photon detectors by using high-resistivity niobium nitride films. The approach opens the way for employing fundamentally improved experimental devices.

physics.ins-det↗

arXiv2019

Room temperature Silicon detector for IR range coated with Ag2S Quantum Dots

We present an elegant and effective technology of extending the photoresponse of Si towards the IR range. Our approach is based on the use of Ag2S quantum dots planted on the surface of Si to create impurity states in Si band gap. Given the variety of available QDs and the ease of extending the photoresponse of Si towards the IR range, our findings open a path towards the future study and development of Si detectors for technological applications. The current research at the interface of physics and chemistry is also of fundamental importance to the development of Si optoelectronics of the IR range.

physics.app-ph↗