The work is devoted to the development of multicomponent photoconductive film polymeric compositions (PPCs) based on polymers and oligomers of different classes sensitized with organic dyes, electron donors and acceptors of various types, as effective recording media for optical data recording, holographic interferometry and photovoltaics applications, as well as to the optimization of their photoconductive, photoelectric and information properties. The work reveals the main regularities of the purposeful development of effective (in particular multifunctional) PPCs for optical data recording and the possibility of controlling their photoelectro-physical properties, such as the magnitude, sign and type of photoconductivity, features of the photo-voltaic effect, as well as information characteristics, due to the proper choice of the poly/oligomer matrix structure and the nature of the photoconductivity-sensitizer components. It is also shown in the work that to optimize the photoconductive characteristics and information properties of oligomeric holographic recording media (HRM) for holographic data photothermo-plastic (PTP) recording method, photocon-ductive co-oligomers with similar transport characteristics of side chromophores, or homooligomers with terminal groups incapable of efficient physical dimers and predimer states (photogenerated charge carriers traps) formation, should be chosen as the oligomeric component. Using carbazolyl-containing oligomeric systems as an example, it has been shown for the first time that for the development of new effective oligomeric PTP HRM, ceteris paribus, in order to improve the photoconductive and information characteristics of the corresponding PPCs, HRM based on branched oligomers of a radial structure cha-racterized by a higher holographic sensitivity (as compared to oligomers of linear structure) have advan-tages over the linear ones, due to the better rheological characteristics and the ability to accumulate a space electric charge during exposure. The nature of the "holographic memory" effect discovered in the corresponding HRM was also established. The new ferrocenyl-containing co- and homooligomers-based effective magnetosensitive colored reversible PTP HRM have been obtained. Their magnetic sensitivity is caused by the magnetically induced change in the efficiency of spin conversion in photogenerated EHPs. Also, new colored ferrocenyl-containing oligomeric photovoltaic compositions with magne-tically-dependent photoconductivity effect (the value and sign of which can be controlled by choosing the structure of the sensitizing dye or by varying the ferrocenyl fragments content in the oligomer) for data recording, storing and recognition in optical and magneto-optical devices have been created. It is shown that the PPCs based on heteropolynuclear complexes of transition metals investigated in this work, due to low photosensitivity, low mobility of the photogenerated charge, and the presence of a wide range of charge carriers traps, cannot be used as effective HRM and photovoltaic media. However, such PPCs can be used as optical memory cells, as well as magnetically sensitive media for data recording, storing and recognition in optical and magneto-optical optoelectronic devices. In this work, for the first time, unusual multimodal kinetics of diffraction efficiency η in the cycle of hologram recording and erasing were observed for a number of recording media for the holographic photothermoplastic technique, the nature of this phenomenon was detailed, and it was demonstrated for the first time that the standard optical control of the holographic recording by the PTP technique using dynamic analysis of the diffraction efficiency η by the analysis of changes in the value of η may not represent the real dynamics of the development of a general case of regular hologram geometric relief. It was also concluded that the described situation should be realized for a wide class of polymer photothermoplastics. In this regard, a new method for recording PTP-holograms has been proposed in this work, which makes it possible to achieve the maximum value of η under these recording conditions. In addition, hybrid photovoltaic CISCuT/polymer heterostructures were developed and their photovoltaic properties were optimized.
A number of effective reversible oligomeric multifunctional HRM, in particular, magnetosensiti-ve, photovoltaics and electro-optical ones, as well as media suitable for both PTP and polarization holog-raphic recording, have been developed. That makes it possible to increase the information capacity of such systems, and also opens up the possibility of using additional channels of influence (external electro- and magnetostatic fields, etc.) to control the information characteristics of the developed HRM.
