این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
Physical Chemistry Research، جلد ۱۱، شماره ۱، صفحات ۲۳-۳۱
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Enhanced Luminescence and Energy Transfer of Bi3+/Dy3+ Co-doped La2Zr2O7 Nanophosphors for pc-LED Applications
چکیده انگلیسی مقاله Lanthanum Zirconate (La2Zr2O7) doped with Bi3+ and co-doped with Dy3+ ions were synthesized by Polyol method and their luminescence properties are reported in this study. From XRD results, the pure cubic phase with the Fd3̅m space group (#227) was confirmed for the as-prepared samples. Absorption studies were performed, to know the absorption properties and estimated the optical energy band gap values of the as-prepared samples. The Morphological studies of the as-prepared samples exhibits irregular shaped agglomerates with particle size between 60 and 90 nm. PL emission spectra of Bi3+ doped La2Zr2O7 emits blue colour located at 460 nm (3P1→1S0 transition) when excited at 330 nm. The Bi3+ and Dy3+ co-doped sample exhibits PL emission peaks around 480 nm (4F9/2→6H15/2) and 575 nm (4F9/2→6H13/2) when excited at 307 nm. From PL studies the optimized composition is identified as La2Zr2O7: 0.5 at% Bi3+; 2 at% Dy3+ which emits strong tunable blue-yellow emissions. The co-doping of Dy3+ with Bi3+ in the host lattice enhances the emission intensities which makes this as a promising compound for pc-LED applications.
کلیدواژه‌های انگلیسی مقاله Emissions Spectra,Excitation,Photoluminescence,Energy-transfer,pc-LED
نویسندگان مقاله V Naveen Kumar Basina |
Department of Physics, Acharya Nagarjuna Univeristy, Guntur-522510,A.P, India. Department of Physics, Shri Vishnu Engineering College for Women (A), Bhimavaram-534202, A.P, India

Nirmal Rajeev Yerramalla |
Department of Physics, Acharya Nagarjuna Univeristy, Guntur-522510,A.P, India. Department of Physics, V.R.Siddhartha Engineering College (A), Kanuru, Vijayawada-520007, A.P. India

Esub Basha Shaik |
Crystal Growth & Nanoscience Research Center, Government College (A), Rajahmundry- 533105, A.P, India

Venkatarao K |
Department of Physics, Acharya Nagarjuna Univeristy, Guntur-522510,A.P, India. Department of Physics, Government Institute of Textile Technology, Guntur-522005, A.P., India

Ramachandra Rao K |
Crystal Growth & Nanoscience Research Center, Government College (A), Rajahmundry- 533105, A.P, India

Sandhya Cole |
Department of Physics, Acharya Nagarjuna Univeristy, Guntur-522510,A.P, India

نشانی اینترنتی https://www.physchemres.org/article_149373_1f70f3864ee81a3eb0b29a943735db18.pdf
فایل مقاله فایلی برای مقاله ذخیره نشده است
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات