Figure 4.

The temporal evolution of the luminous intensity as a function of viewing angle for LECs with different active-layer thickness, as identified in the upper right corner. The colors and arrows indicate increasing time from 1–2 min (initial, dashed blue line), over 5–60 min (transition, dotted red line), to 180 min (steady-state, dash-dotted green line). The black solid line is included as a Lambertian reference.