Near-infrared fluorescent powder, preparation method of fluorescent powder and light-emitting device containing fluorescent powder

A light-emitting device and phosphor technology, applied in the field of fluorescent materials, can solve problems such as low luminous efficiency, achieve the effects of high luminous efficiency, high emission performance, and widen application fields
CN108467733AActive Publication Date: 2018-08-31GRIREM ADVANCED MATERIALS CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GRIREM ADVANCED MATERIALS CO LTD
Publication Date
2018-08-31

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Abstract

The invention belongs to the technical field of fluorescent materials, particularly relates to near-infrared fluorescent powder, and further discloses a preparation method of the fluorescent powder, and a light-emitting device containing the fluorescent powder. The near-infrared fluorescent powder comprises an inorganic compound having a composition formula of AxRrQqZy:zD, an excitation wavelengthof the compound is 200-700 nm, and the compound has broadband emission with an emission main peak of 700-1600 nm in a near-infrared light region. The near-infrared fluorescent powder provided by theinvention has a wider excitation wavelength, can well absorb ultraviolet light, blue light and red light, and has stronger near-infrared luminescence than gallium germanate system near-infrared fluorescent powder without Gd.
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Description

technical field

[0001] The invention belongs to the technical field of fluorescent materials, and in particular relates to a near-infrared fluorescent powder, and further discloses a preparation method thereof and a light-emitting device containing the fluorescent powder. Background technique

[0002] With the rise and rapid development of the modern Internet of Things, biometrics, and wearable devices, various sensors and image recognition technologies are becoming more and more important. Among these technologies, infrared LEDs have become an important auxiliary light source due to their wide application characteristics.

[0003] Infrared LED, or infrared light-emitting diode, is a near-infrared light-emitting device that converts electrical energy into light energy. It has a series of advantages such as small size, low power consumption, and good directivity. It is widely used in remote control, telemetry, optical isolation, optical Switches, photoelectric control, targe...

Claims

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