Method for preparing high-color-rendering-index white light device through electric annealing or thermal annealing

Abstract

The invention provides a method for preparing a high-color-rendering-index white light device through electric annealing or thermal annealing. The method comprises the steps that indium tin oxide conductive glass serves as an electric-base substrate material, the etching step, the organic layer spin-coating step, the electrode deposition step, the packaging step and the like are completed, a spin-coating material of a luminescent layer is terfluorene instead of polyvinyl carbazole, after spin-coating operation is conducted, the electric annealing or thermal annealing step is conducted. According to the method, the shortages that a white light device in the prior art is complex in preparation technology, high in manufacturing cost, unfavorable for low-price preparation and low in color rendering index are overcome. The high-color-rendering-index white light device is simple in technology and low in manufacturing cost, the organic white light device with a high color rendering index (CRI >=91) can be obtained through the simple thermal annealing or electric annealing method, and the high-color-rendering-index white light device is suitable for large-scale production.

Description

technical field [0001] The invention relates to a preparation method of an organic white light device, in particular to a method for preparing a high color rendering index white light device by electrical annealing or thermal annealing. Background technique [0002] Organic functional materials have broad application prospects in terms of energy saving, environmental protection, and sustainable development, such as organic solar cells, organic light-emitting diodes, organic field effect transistors, organic photoelectric memory and other nano-devices. At present, organic light-emitting diodes, referred to as organic light-emitting diodes, or OLEDs, are the most developed and most promising in the market. [0003] The unique advantages of OLED are its fast response, wide viewing angle, low energy consumption, light texture, flexible display, easy processing, and rich, clear and beautiful images. Another use of OLEDs is as a source of solid-state white lighting. Compared wit...

AI Technical Summary

Problems solved by technology

However, its shortcomings are also obvious, that is, it is difficult to prepare white light devices with high color rendering index

[0007] Our country's scientific research level is almost in sync with developed countries, but it is obviously insufficient in industrial application, and large-area solid-state white light lighting devices have not yet achieved industrialization

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