Intense red-green up-conversion emission and their mechanisms of SrO: Er³⁺/Yb³⁺, Gd³⁺, Lu³⁺, Bi³⁺

详细信息    查看全文

• 作者：Jipeng Fu^a ; ^b ; ^c ; Ran Pang^b ; Yonglei Jia^a ; ^b ; Wenzhi Sun^a ; ^b ; Lihong Jiang^a ; Su Zhang^a ; ^{zhangsu@ciac.ac.cn" class="auth_mail" title="E-mail the corresponding author} ; Chengyu Li^a ; ^{cyli@ciac.ac.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Up-conversion ; Er3+ ; Energy transfer ; Transition mechanisms ; Color modification
• 刊名：Journal of Luminescence
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：181
• 期：Complete
• 页码：240-245
• 全文大小：2794 K

文摘

A novel series of intense red–green up-conversion (UC) phosphors SrO: Er³⁺/Yb³⁺, Gd³⁺, Lu³⁺, Bi³⁺ were obtained through a modified solid-state reaction. The obtained UC samples emitted dazzling red–green light. Their spectra were composed of strong red emission (⁴F_9/2→⁴I_15/2) and green emission (²H_11/2, ⁴S_3/2→⁴I_15/2) with the excitation of a 980 nm near-infrared (NIR) laser diode (less than 90 mW/cm²). The dependence of UC spectra on dopant contents, concentration and pumping power were comprehensively analyzed. The possible UC mechanisms and processes were proposed. These studies provided an opportunity to adjust emission colors and design new types of materials with desired properties through referencing a given methodology. It is anticipated that these materials may have potential applications in the fields of authentication, display and photo-switching.