Optical and spectral characteristics of chromium ion doped double alkali-aluminum phosphates

• Дата: 2005
• Автори: Nedilko, S., Gomenyuk, O., Umanets, G., Stus', N., Slobodyanik, M., Boyko, V., Sheludko, V.
• Формат: Стаття
• Мова: English
• Опубліковано: НТК «Інститут монокристалів» НАН України 2005
• Назва видання: Functional Materials
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/138873
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Optical and spectral characteristics of chromium ion doped double alkali-aluminum phosphates / S. Nedilko, O. Gomenyuk, G. Umanets, N. Stus', M. Slobodyanik, V. Boyko, V. Sheludko // Functional Materials. — 2005. — Т. 12, № 4. — С. 639-644. — Бібліогр.: 15 назв. — англ.

Diffuse reflection, luminescence, and luminescence excitation spectra of double alkalialuminum phosphate MAIP₂О₇ (M = Na, К, Сs) crystals doped with chromium ion have been considered. The reflection spectrum bands have been ascribed to excitation of Сг³⁺ ion in the crystal lattice. The luminescence spectra include two main bands lying in the green-orange and red spectral regions, respectively. Influence of the alkali metal cation on the "red" luminescence band position has been considered. The complex structure of the "green-orange" band has been shown to be due to superposition of the matrix intrinsic emission and extrinsic emission of chromium ions included in СгO²⁻ groups. The "red" luminescence band is caused by radiative transitions in Сг³⁺ ions being in octahedral oxygen environment. Influence of the crystal field, alkali cation type, and the crystal structure type on its spectral characteristics has been discussed.