Comment on "Enhancement of flip-chip white light-emitting diodes with a one-dimensional photonic crystal".
We show that research presented in Opt. Lett.34, 301 (2009)OPLEDP0146-959210.1364/OL.34.000301 applied questionable phosphor definitions and a questionable simulation procedure for light-emitting diodes. Our simulation indicates that a one-dimensional photonic crystal is beneficial for color control but cannot improve the light extraction as asserted in that Letter.
MOEMS Division, WNLO, Huazhong University of Science and Technology, Wuhan, 430074 China.
Zong-Yuan
ZY
Liu
Sheng
S
Liu
Kai
K
Wang
Xiao-Bing
XB
Luo