The formation of a nanocrystalline composite of a ZnO–C system with simultaneous mechanical activation of a mixture of zinc oxide and graphite powders in a ball mill in an inert atmosphere is studied. It is shown that the presence of graphite reduces the efficiency of dispersing ZnO crystallites. The following principal dispersion mechanisms of graphite are determined: the fragmentation of particles due to the impact of grinding bodies and the exfoliation of flakes by submicron zinc oxide particles. It has been established that a composite system is formed as a result of the prolonged mechanical activation effect on the ZnO–graphite mixture, which is a nanocrystalline zinc oxide powder with uniformly distributed inclusions of micro- and nanocrystalline graphite, turbostratic carbon, exfoliated graphene structures, and amorphous carbon.
Выполнены сравнительные исследования микроструктуры, оптических и электрических характеристик слоев ZnO, легированного галлием, синтезированных методом магнетронного распыления при ассистировании процесса роста ультрафиолетовым излучением и без ассистирования. Обнаружено, что УФ-ассистирование процесса роста прозрачных проводящих слоев на основе ZnO способствует улучшению их электрических характеристик за счет создания дополнительных донорных центров и снижения рассеяния носителей заряда на межзеренных границах, существенно не влияя при этом на морфологию слоев и средний коэффициент оптического пропускания в видимой области спектра. DOI: 10.21883/PJTF.2017.22.45259.16874
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