TY - JOUR
T1 - White-Light Emission from GaN-Based TJ LEDs Coated with Red Phosphor
AU - Lam, Kin Tak
AU - Lin, Wei Heng
AU - Shei, Shih Chang
AU - Lin, Nan Ming
AU - Chen, Wei Shou
AU - Chang, Shoou Jinn
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/9
Y1 - 2016/9
N2 - We report the fabrication of white light-emitting diode (LED) lamps by coating red phosphor onto the green/blue dual-color tunnel-junction (TJ) LED chips. For the dual-color TJ LED chips without phosphor coating, it was found that electroluminescence intensity of the green peak increased faster than that of the blue peak, as we increased the injection current. Under the same injection current, it was found that power consumption and heat generation were larger for the TJ LEDs, as compared with the conventional blue LED chips. By coating 0.1-g red phosphor onto the 660×760μm2 dual-color TJ LED chips, we achieved white LED lamps with color temperature, TC, of 4102 K, color-rending index, CRI, of 68, and the Commission Internationale de L'Eclairage color coordinates of (0.32, 0.36). Furthermore, it was found that TC observed from the dual-color TJ LED + red phosphor white LED lamps were smaller than those observed from the blue LED+yellow phosphor white LED lamps.
AB - We report the fabrication of white light-emitting diode (LED) lamps by coating red phosphor onto the green/blue dual-color tunnel-junction (TJ) LED chips. For the dual-color TJ LED chips without phosphor coating, it was found that electroluminescence intensity of the green peak increased faster than that of the blue peak, as we increased the injection current. Under the same injection current, it was found that power consumption and heat generation were larger for the TJ LEDs, as compared with the conventional blue LED chips. By coating 0.1-g red phosphor onto the 660×760μm2 dual-color TJ LED chips, we achieved white LED lamps with color temperature, TC, of 4102 K, color-rending index, CRI, of 68, and the Commission Internationale de L'Eclairage color coordinates of (0.32, 0.36). Furthermore, it was found that TC observed from the dual-color TJ LED + red phosphor white LED lamps were smaller than those observed from the blue LED+yellow phosphor white LED lamps.
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U2 - 10.1109/LED.2016.2588887
DO - 10.1109/LED.2016.2588887
M3 - Article
AN - SCOPUS:84984815331
SN - 0741-3106
VL - 37
SP - 1150
EP - 1153
JO - IEEE Electron Device Letters
JF - IEEE Electron Device Letters
IS - 9
M1 - 7506249
ER -