کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5441511 | 1510389 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photoluminescence properties of tellurite glasses doped Dy3Â + and Eu3Â + for the UV and blue converted WLEDs
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The glasses including phosphor particles were prepared and developed to avoid the poor thermal stability of the organic encapsulants in the commercially dominant YAG: Ce3Â + phosphor converted WLEDs. However, the preparation of glasses including phosphor particles with the white emission is relative complex and difficult. In this work, the tellurite glasses single doped and co-doped with Dy3Â + and Eu3Â + were prepared, and their photoluminescence properties were investigated. The results demonstrated that the tellurite glasses single doped with Dy3Â + and Eu3Â + exhibited the yellow and red emission under the excitation of UV and blue light, respectively. For the tellurite glasses co-doped with Dy3Â + and Eu3Â +, the energy transfer from the Dy3Â + and Eu3Â + ions was observed due to the electric dipole-dipole interaction, and the tunable luminescence was obtained by changing the Eu3Â + concentration. The light-emitting diodes were constructed by coupling Dy3Â + and Eu3Â + co-doped tellurite glasses with the UV or blue chip, and the chromaticity coordinate of such LEDs can be well tuned to white light region. These results indicated that the Dy3Â + and Eu3Â + co-doped tellurite glasses can act as a promising candidate for the blue and UV converted WLEDs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 457, 1 February 2017, Pages 1-8
Journal: Journal of Non-Crystalline Solids - Volume 457, 1 February 2017, Pages 1-8
نویسندگان
Chengye Yu, Zhengwen Yang, Anjun Huang, Zhuangzhuang Chai, Jianbei Qiu, Zhiguo Song, Dacheng Zhou,