White-light generation through Ce3+/Mn2+-codoped and Eu2+-doped Ba1.2Ca0.8-&#948;SiO4 T-phase phosphors

Kwang Won Park; Jae Bum Lee; Tae Hoon Kim; Jong Su Kim; Patrick Kung; Seongsin Margaret Kim

doi:10.1117/12.840520

11 February 2010 White-light generation through Ce³⁺/Mn²⁺-codoped and Eu²⁺-doped Ba_1.2Ca_0.8-δSiO₄ T-phase phosphors

Kwang Won Park, Jae Bum Lee, Tae Hoon Kim, Jong Su Kim, Patrick Kung, Seongsin Margaret Kim

Proceedings Volume 7617, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XIV; 76171L (2010) https://doi.org/10.1117/12.840520
Event: SPIE OPTO, 2010, San Francisco, California, United States

Abstract

Ce³⁺/Mn²⁺-codoped Ba_1.20Ca_0.8-2x-ySiO₄:xCe³⁺, xLi⁺, yMn²⁺ phosphors show two emission bands peaking at around 600 nm (red) and 400 nm (deep-blue) from the forbidden ⁴T₁-⁶A₁ transition of Mn²⁺ ions and the allowed 4f-5d transition of Ce³⁺ ions, respectively. Eu²⁺-doped Ba_1.20Ca_0.7SiO₄:0.1Eu²⁺ phosphor shows a broad green emission band from 430 to 550 nm from the allowed f-d transition in Eu²⁺ ions. The mixtures of both phosphors, excited by the near ultraviolet of 365 nm, show the various qualities of white lights depending on the mixture ratio; the correlated color temperatures from 3500 to 7000 K, and the color-rendering indices up to 95 %. Furthermore, they show a high quenching temperature of about 225 °C.

Citation Download Citation

Kwang Won Park, Jae Bum Lee, Tae Hoon Kim, Jong Su Kim, Patrick Kung, and Seongsin Margaret Kim "White-light generation through Ce³⁺/Mn²⁺-codoped and Eu²⁺-doped Ba_1.2Ca_0.8-δSiO₄ T-phase phosphors", Proc. SPIE 7617, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XIV, 76171L (11 February 2010); https://doi.org/10.1117/12.840520

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