The Chinese scientists developed technology of production from inexpensive organic materials of light-emitting diode of white luminescence, twice excelling analogical models on a brightness. Modern light-emitting diode is far more economical, than incandescent lamps and luminescent sources of light; their KPD to 50 percents can reach. However much distribution of technology restrains temper complication of creation of light-emitting diode of white luminescence (to construct
a monochromatic source is not difficult here). In order that to provide naturalness of illumination, developers have either to combine the radiation of three sources (white, dark blue and red) or skip a radiation through a filter or layer
phosphors; all of it, naturally, affects eventual cost of product.The Chinese specialists succeeded to find the decision of the indicated problem and construct light-emitting diode of white luminescence with one active layer; scientists rotined also, that at an association two
such devices their general efficiency rises, reports Science Daily.potrebitel’skie qualities of new light-emitting diode were estimated by determination of size of index of colour rendition. This index characterizes that, as far as surrounding objects look naturally
in the light of concrete source. For measuring of size of index choose 8 test colors, which at first light up a testable source, and then standard lamp, having the same colour temperature; what less than difference in colour rendition between a test
by colors, so much the better colour rendition of the investigated source. According to news of the Chinese scientists, light-emitting diode created by them rotined a result, near to 70; such (or more high) value of index is considered optimum for illumination at reading, passes science.compulenta.ru.
photo: new light-emitting diode in operations.
