Process for the preparation of up-conversion phosphors
Номер патента: CA3192742A1
Опубликовано: 17-09-2023
Автор(ы): Christina Janke, Juri Tschernjaew, Michael Huth, Simone SCHULTE, Stefan Fischer
Принадлежит: EVONIK OPERATIONS GMBH
Опубликовано: 17-09-2023
Автор(ы): Christina Janke, Juri Tschernjaew, Michael Huth, Simone SCHULTE, Stefan Fischer
Принадлежит: EVONIK OPERATIONS GMBH
Реферат: 202100281 17 Abstract The invention relates to a process for the preparation of an up-conversion phosphor of the general formula (l) Ai_x_y_zB*yB2Siat:Lnix,Ln2z, I comprising the following steps: - preparing a mixture, - introducing the mixture into a reaction chamber of a thermal apparatus, - heating the mixture until a thermal treatment temperature is reached with a heating ramp, - thermally treating the heated mixture, the holding time being at least 0.02 h, - cooling the thermally treated material to room temperature while maintaining a cooling ramp, - obtaining a silicate-based lanthanoid ion-doped phosphor according to formula (l). Date Recue/Date Received 2023-03-13
Process for the preparation of up-conversion phosphors
Номер патента: US20230295495A1. Автор: Stefan Fischer,Michael Huth,Juri Tschernjaew,Simone SCHULTE,Christina Janke. Владелец: EVONIK OPERATIONS GMBH. Дата публикации: 2023-09-21.