zhpsЖурнал прикладной спектроскопииZhurnal Prikladnoii Spektroskopii0514-7506B. I. Stepanov Institute of Physics of the National Academy of Scienceszhps-1233Research ArticleАННОТАЦИИ АНГЛОЯЗЫЧНЫХ СТАТЕЙABSTRACTS ENGLISH-LANGUAGE ARTICLESСтруктурные, морфологические и фотолюминесцентные свойства полученных методом простого растворения нанокомпозитов CdO, легированных TiO2Structural, Morphological, and Photoluminescence Properties of TiO2-Doped CdO Nanocomposites Prepared by a Simple Solution MethodKumarM. S.KumarM. S.

Виджаявада

Vijayawada

RavikumarR.V.S.S.N.RavikumarR. V. S. S. N.

Нагарджуна Нагар, Гунтур

Nagarjuna Nagar, Guntur

RaoM.C.RaoM. C.

Виджаявада

Vijayawada

raomc72@gmail.comКолледж Андхра ЛойолаDepartment of Physics, Andhra Loyola CollegeУниверситет Ачарьи НагарджуныDepartment of Physics, Acharya Nagarjuna University202304022023901119119Copyright © Kumar M.S., Ravikumar R., Rao M.C., 20232023Kumar M.S., Ravikumar R., Rao M.Kumar M.S., Ravikumar R., Rao M.C.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://zhps.ejournal.by/jour/article/view/1233

Чистый CdO и нанокомпозиты CdO, легированные TiO2 (0.1, 0.3 и 0.5 мас.%), приготовлены методом простого растворения. Структурный, морфологический и элементный составы определены методами рентгеновской дифракции, сканирующей электронной микроскопии (SEM), энергодисперсионного рентгеноструктурного анализа и фотолюминесценции. На дифрактограммах видно, что образцы имеют кубическую фазовую структуру, а нанокомпозиты — наномасштаб. С помощью SEM выявлены пластинчатые участки с неравномерной зернистостью вследствие агломерации. Размеры частиц чистого CdO 61.98 нм, а CdO, легированного TiO2 (0.1, 0.3 и 0.5 мас.%), — 49.57, 35.41 и 31 нм. Максимумы при 1.90 и 2.38 эВ в ИК-видимой области соответствуют CdO. Близкраевое излучение при 2.38 эВ характерно как для чистого, так и для легированного CdO. Можно предположить, что фотогенерированные электроны захватываются Ti4+ в запрещенной зоне, что усиливает излучение глубоких уровней. 

Pure CdO and TiO2-doped CdO nanocomposites with different wt% ratios (0.1, 0.3, and 0.5%) were prepared by a simple solution method. Structural, morphological, and elemental composition of the prepared samples was undertaken by X-ray diffraction, scanning electron microscopy (SEM), energy dispersive X-ray analysis, and photoluminescence. The diffraction peaks of the samples showed the cubic phase structure and the prepared nanocomposites were on the nanoscale. SEM revealed the plate-like chunks with irregular grains due to agglomeration. The particle size of the pure CdO sample was found to be 61.98 nm, whereas TiO2-doped CdO (0.1, 0.3, and 0.5%) exhibited 49.57, 35.41, and 31 nm. The first peak was observed at 1.90 eV in the IR-visible region and the second peak at 2.38 eV. Both the peaks correspond to CdO. Near-band-edge emission of 2.38 eV is typical for both pure and doped CdO. It can be suggested that the photo-generated electrons have been trapped in to Ti4+ in the forbidden gap, which enhanced the deep level emission. 

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The authors declare that there are no conflicts of interest present.