TY - JOUR AU - Yi, Seungryeol AU - Chung, Woon Jin AU - Heo, Jong PY - 2015 DA - 2015/08/07 TI - Phosphor-in-glasses composites containing light diffusers for high color uniformity of white-light-emitting diodes JO - Journal of Solid State Lighting SP - 8 VL - 2 IS - 1 AB - ZrO2 light diffuser layers was placed on phosphor-in-glass composites (PiGs) to improve color uniformity of white-light-emitting diodes (white LEDs). Color coordinates of central part and periphery of white LEDs were (0.34, 0.38) and (0.36, 0.43), respectively; difference between two area decreases with the introduction of a diffuser layer. Color temperature difference also decreased from 770 to 464 K. The addition of diffuser layers reduced the luminous efficacy of the white LEDs from 90.3 to 83.4 lm/W. SN - 2196-1107 UR - https://doi.org/10.1186/s40539-015-0027-8 DO - 10.1186/s40539-015-0027-8 ID - Yi2015 ER -