|
ИСТИНА |
Войти в систему Регистрация |
Интеллектуальная Система Тематического Исследования НАукометрических данных |
||
New route to Bi+-doped crystals: Preparation and NIR luminescence of K, Rb and Cs ternary chlorides, containing univalent bismuthдоклад на конференции
- Авторы: Veber A.A., Fattakhova Z.T., Vtyurina D.N., Usovich O.V., Romanov A.N., Sulimov V.B., Haula E.V., Trusov L.A., Kazin P.E., Korchak V.N., Tsvetkov V.B., Grigoriev F.V.
- Конференция : The European Conference on Lasers and Electro-Optics, CLEO_Europe 2013; Munich; Germany;
- Даты проведения конференции: 2013
- Дата доклада: 12 мая 2013
- Тип доклада: не указан
- Докладчик: не указан
- Место проведения: Munich; Germany, Germany
-
Аннотация доклада:
n Lewis acidic melts it is possible to obtain the metal cations in unusually low oxidation (subvalent) states with unusual electronic configurations. Specifically, univalent bismuth cation possesses the open shell 6p2 configuration with several low-lying electronic exited states, causing the absorption bands in visible/NIR and intense long-lived (hundreds of μs) and broad luminescence in NIR. Quantum chemical estimation of Bi+ ionic radius in different coordination states gives the values, which place the radius of Bi+ very close to Rb+ cation. This fact open the possibility to prepare the crystal hosts with alkali cations of similar size (K+, Rb+, Cs+), which can be doped with Bi+ by isomorphous substitution. The experimental investigation of NIR luminescence in bismuth-doped RbPb2Cl5, KAlCl4, KMgCl3 and CsI crystals support this conclusion.
- Добавил в систему: Григорьев Федор Васильевич