| abstract |
The present invention relates to an element such as an LED, a display, or an electronic book reader that emits light in response to electrical excitation or optical excitation. The element is found, for example, in displays, televisions, mobile phones, tablets or computers. The present invention simultaneously demonstrates high emission spectral techniques and allows for proper control of the wavelength, directivity, and / or polarization of emitted light, thus increasing the brightness and color gamut of displays comprised of such elements. A light-emitting element can be realized. More particularly, the present invention relates to an element for emitting light in response to activation of an excitation means, the element having a minimum dimension, i.e. at least 1.5 times the thickness and at least 1 less than the other two. Comprising two anisotropic flat colloidal semiconductor nanocrystals, the emitted light having a luminance and polarization that varies according to the direction of emission and the angle formed by a normal to a larger surface of the flat nanocrystal. Various embodiments of these elements are also shown. [Selection] Figure 6 |