Рамановская спектроскопия нанокомпозитов ZnO/ZnS и ZnO/ZnSe, полученных методом сольвотермического микроволнового синтеза

Представлены нанокомпозиты ZnO/ZnS и ZnO/ZnSe, синтезированные сольвотермо-микроволновым методом. Для объяснения режима фононных колебаний применен метод рамановской спектроскопии. Полученная высокая интенсивность рамановского рассеяния подтвердила высокочастотную фононную моду гексагонального вюрцита ZnO. Наличие интенсивного комбинационного рассеяния света кубических структур ZnS и ZnSe свидетельствует о существовании продольной оптической фононной моды. Обнаружены небольшие сдвиги во всех модах ZnO для ZnO/ZnS и ZnO/ZnSe, которые указывают на наличие напряжения и деформации в кристаллической решетке. Исследованы изменения размера частиц с помощью конфокальной рамановской микроскопии. Показано, что изменения структуры и размеров частиц материала улучшили его характеристики. Подтверждено, что нанокомпозитные гетероструктуры, полученные простым химическим методом, применимы для создания оптоэлектронных устройств.

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