Abstract
In order to expand the color gamut of liquid crystal displays, colloidal semiconductor nanocrystals (NCs) with narrow emission peaks were introduced as down-converters for the backlight, in which the green-emitting NC is the critical and challenging part. Herein green-emitting CdZnSe ternary NCs, with narrow emission line width of ∼18 nm, were synthesized. By combining these green-emitting NCs with blue light-emitting diode and red-emitting CdSe-based NCs a wider color gamut of ∼136% can be reached, relative to the National Television Standard Committee (NTSC) in the 1931 CIE color coordinates space. The influence factors on narrow line width, such as size/morphology distribution and surface state, were investigated by transmission electron microscope (TEM) images and time resolved spectrometry. The synthetic conditions of these NCs were discussed also.
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