Figure 13

A comparison of the calculated limit of illumination luminous efficacy of the pcW-LEDs in different phosphor recipes. The right end of red bar is the luminous efficacy with 5% in electrical injection loss and 5% in thermal loss. The right ends of the light-grey, dark-grey and black bar are 90%, 60% and 45% in OUF, respectively, and respond to the applications in light bulb, automotive heal lamp and street light.