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Information × Registration Number 0223U001030, 0122U200140 , R & D reports Title Microwave analysis of carrier localisation properties in next generation solar materials popup.stage_title Head Derkach Vadym M., Кандидат фізико-математичних наук Registration Date 24-01-2023 Organization O. Ya. Usikov Institute for Radiophysics and Electronics NAS of Ukraine popup.description2 The report on the research work: 42 pages, 30 figures, 18 references. LOCALIZED CARRIERS, ORGANIC CONDUCTORS, SOLAR ELEMENTS, DISK DIELECTRIC RESONATORS, MILLIMETER WAVES The object of research is the phenomena and processes of interaction of electromagnetic resonance radiation of the gigahertz (GHz) frequency range, which is formed in dielectric resonators (DR), with the surrounding environment. The aim of the research is to develop a non-contact radiophysical method for studying the spin dynamics and transport properties of spin carriers in organic conductors (OPV) using high-quality (high-Q) disk dielectric resonators (DDR). This technique, in which triplet excitons in the studied organic conductors are coupled to the microwave field of DDR, will simultaneously probe the length of localization of photoexcitation and investigate the characteristics of their spin properties using spin resonance. The use of DDR will extend the range of measurements from ultra-low to room temperatures (1.5 K – 300 K) and magnetic fields up to 10 T. According to the work plan for the second year, the following was done: - the device for changing the coupling of the waveguide with the DR in the low-temperature electrodynamic unit remotely, without heating the working chamber was developed; - the helium optical cryostat with an electrodynamic unit was assembled, flow-tested and adjusted; - the installation and adjustment of the ultra-high-frequency measuring path and the high-frequency unit with a resonant cell to carry out experiments on the transport of excitons in OPV in the optical cryostat by the method of optically detected magnetic resonance (ODMR) were performed; - debugging experiments to study the transport of excitons in organic conductors using high-Q DR of a special shape at low temperatures in an optical cryostat in the frequency range of 100 – 140 GHz were conducted; - results were analyzed and plans for further research were developed. Product Description popup.authors Golovashchenko Roman V Korzh Vadym H. Liashenko Illia Ostryzhnyi Yevhenii M popup.nrat_date 2023-01-24 Close