Photoluminescence and electroluminescence characteristics of CaSiN2:Eu phosphor

Soon Seok Lee; Sungkyoo Lim; Sey-Shing Sun; John F. Wager

doi:10.1117/12.293532

14 November 1997 Photoluminescence and electroluminescence characteristics of CaSiN₂:Eu phosphor

Soon Seok Lee, Sungkyoo Lim, Sey-Shing Sun, John F. Wager

Proceedings Volume 3241, Smart Materials, Structures, and Integrated Systems; (1997) https://doi.org/10.1117/12.293532
Event: Far East and Pacific Rim Symposium on Smart Materials, Structures, and MEMS, 1997, Adelaide, Australia

Abstract

Photoluminescenc eand electroluminescence of CaSiN₂:Eu materials were investigted to develop a new phosphor for thin film electroluminescence (TFEL) device applications. Ca₃N₂ and Si₃N₄ powders were mixed to form CaSiN₂ hostmaterials and Eu was added as the luminescent center. The mixed powermatrials were cold pressed under the pressure of 1 Kg/cm² to make pellets, and fired at 1400 degrees Celsius for 2 hours under N₂H₂ envrionemtn. Th ex-ry diffraction(CRD) patterns of synthesizd materals wer well matched with CaSiN₂ of joint committee for powder diffraction standards (JCPDS) csrad. When illuminated by ultravilet rays, th enew phosphors emitted very bright red ligh of peak wav lenegth centered at 620 nm. Th TFEL devices with CaSiN₂:Eu phosphor layser swre grown by sputter depositonof CaSiN₂:Eu target. Red light emission was observed when the peak amplitude of the applied voltge exceeded 116 V.l The luminance was shown to increase sharply withth increase of the applied voltage. The maximum luminance was 1.62 Cd/m² at the applied peak voltage of 276 V. The red emission from CaSiN₂:Eu TFEL device seems to result from electronic transition of Eu³⁺ ions.The emission spectra of TFEl devices matchwell withth ephotoluminescence spectra of CaSiN₂:Ey powders. The new devices structure and fabrication processes for the iimprovement of emission intenityof CaSiN₂:Eu TFEl devices ar under investigation.

Citation Download Citation

Soon Seok Lee, Sungkyoo Lim, Sey-Shing Sun, and John F. Wager "Photoluminescence and electroluminescence characteristics of CaSiN₂:Eu phosphor", Proc. SPIE 3241, Smart Materials, Structures, and Integrated Systems, (14 November 1997); https://doi.org/10.1117/12.293532

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available