Similarly, the results shown point out the need for creating regulations for other road luminous devices applying Led technology installed in public areas such as signals and billboards, luminous poles in special vehicles (police cars, ambulances).
Based on these results, display manufacturers can determine how their products will affect melatonin levels and use model predictions to tune the spectral power distribution of self-luminous devices to increase or to decrease stimulation to the circadian system.
The maximum luminous efficiencies of devices A, B, C, and D were 17.99, 19.46, 19.95, and 18.24 cd/A, and the maximum quantum efficiencies of devices A, B, C, and D were 9.08%, 10.02%, 10.05%, and 8.72%, respectively.
Although the luminous efficiency of the device is lowered by the introduction of the TPD-PI interlayer, the lifetime of the device is improved.
Table 3 summarizes the luminous efficiency of each device ranging from 50 to 150 mA/cm2.
Strontium monosulfide, SrS, is employed as a depilatory and as an ingredient in phosphors for electroluminescent devices and luminous paints.
Therefore, it was not enough to enhance luminous efficiency of OLED devices.
The effect was verified in devices whose emitted luminous intensities were not so different from those of "conventional" devices, considering the latter as uniformly illuminated (whether they use LEDs or another luminous source).
Luminous efficiency of QWS blue OLED devices is higher than that of conventional OLED devices.
The device includes a small luminous screen, thus, to avoid any lighting effects on bacteria, we closed the screen with two layers of aluminum foil.
