Eu2+ Site Preferences in the Mixed Cation K2BaCa(PO4)(2) and Thermally Stable Luminescence : сборник научных трудов | Научно-инновационный портал СФУ

Eu2+ Site Preferences in the Mixed Cation K2BaCa(PO4)(2) and Thermally Stable Luminescence : сборник научных трудов

Тип публикации: статья из журнала

Год издания: 2018

Идентификатор DOI: 10.1021/jacs.8b06021

Аннотация: Site preferences of dopant Eu2+ on the locations of K+, Ba2+, and Ca2+ in the mixed cation phosphate K2BaCa(PO4)(2) (KBCP) are quantitatively analyzed via a combined experimental and theoretical method to develop a blue-emitting phosphor with thermally stable luminescence. Eu2+ ions are located at K2 (M2) and K3 (M3) sites of KBCP, with the latter occupation relatively more stable than the former, corresponding to emissions at 438 and 465 nm, respectively. KBCP:Eu2+ phosphor exhibits highly thermal stable luminescence even up to 200 degrees C, which is interpreted as due to a balance between thermal ionization and recombination of Eu2+ 5d excited-state centers with the involvement of electrons trapped at crystal defect levels. Our results can initiate more exploration of activator site engineering in phosphors and therefore allow predictive control of photoluminescence tuning and thermally stable luminescence for emerging applications in white LEDs.

Ссылки на полный текст

Издание

Журнал: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Выпуск журнала: Vol. 140, Is. 30

Номера страниц: 9730-9736

ISSN журнала: 00027863

Место издания: WASHINGTON

Издатель: AMER CHEMICAL SOC

Авторы

  • Qiao Jianwei (Univ Sci & Technol Beijing, Beijing Municipal Key Lab New Energy Mat & Techno, Sch Mat Sci & Engn, Beijing 100083, Peoples R China)
  • Ning Lixin (Anhui Normal Univ, Dept Phys, Anhui Key Lab Optoelect Mat Sci & Technol, Wuhu 241000, Anhui, Peoples R China)
  • Molokeev Maxim S. (RAS, SB, KSC, Lab Crystal Phys,Kirensky Inst Phys,Fed Res Ctr, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia; Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia)
  • Chuang Yu-Chun (Natl Synchrotron Radiat Res Ctr, Hsinchu 300, Taiwan)
  • Liu Quanlin (Univ Sci & Technol Beijing, Beijing Municipal Key Lab New Energy Mat & Techno, Sch Mat Sci & Engn, Beijing 100083, Peoples R China)
  • Xia Zhiguo (Univ Sci & Technol Beijing, Beijing Municipal Key Lab New Energy Mat & Techno, Sch Mat Sci & Engn, Beijing 100083, Peoples R China)

Вхождение в базы данных

Информация о публикациях загружается с сайта службы поддержки публикационной активности СФУ. Сообщите, если заметили неточности.

Вы можете отметить интересные фрагменты текста, которые будут доступны по уникальной ссылке в адресной строке браузера.