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A test system for absolute quantum yield of upconversion luminescence

A technology of absolute quantum yield and testing system, which is applied in the field of optical instruments and spectral analysis, and can solve problems such as difficulty in wide application, accuracy and usability discount

Active Publication Date: 2015-11-18
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the key index used to evaluate the up-conversion capability of such materials—the measurement method of up-conversion quantum efficiency has not been reported in China, and the few reported systems in the world also have great accuracy and ease of use due to the above reasons. Discounted, difficult to apply widely

Method used

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  • A test system for absolute quantum yield of upconversion luminescence
  • A test system for absolute quantum yield of upconversion luminescence

Examples

Experimental program
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Effect test

example 1

[0017] Example 1: Quantum Efficiency Test of Upconversion Emission

[0018] Put the powder sample into the groove of a specially made polished quartz plate with a groove, press it with a cover plate quartz plate and clamp it in a polytetrafluoroethylene slot with a square base, open the integrating sphere, and place the base of the sample Place it on the sample holder at the normal incidence position, and adjust the angle so that the square base of the sample holder is just embedded in the direct incidence position of the sample holder in the integrating sphere; put the solution sample into a standard quartz cuvette with stopper, insert the sample into the integrating sphere The direct incident position of the frame; block and film samples can be directly inserted into the polytetrafluoroethylene slot and properly adjusted to expose the part to be tested, and then inserted into the sample holder in the integrating sphere.

[0019] Select a suitable laser light source as the ex...

example 2

[0027] Example 2: Quantum Efficiency Test of Ultraviolet-Near Infrared Broadband Emission

[0028] Put the powder sample into the groove of a specially made polished quartz plate with a groove, press it with a cover plate quartz plate and clamp it in a polytetrafluoroethylene slot with a square base, open the integrating sphere, and place the base of the sample Place it on the sample holder at the normal incidence position, and adjust the angle so that the square base of the sample holder is just embedded in the direct incidence position of the sample holder in the integrating sphere; put the solution sample into a standard quartz cuvette with stopper, insert the sample into the integrating sphere The direct incident position of the frame; block and film samples can be directly inserted into the polytetrafluoroethylene slot and properly adjusted to expose the part to be tested, and then inserted into the sample holder in the integrating sphere.

[0029] Select an appropriate l...

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Abstract

The invention provides a system for testing a yield of an up-conversion luminescence absolute quantum. The system mainly consists of four parts of a pump light source and a coupling light path, an integrating sphere and an optical fiber coupling collecting light path, a light splitting system and a signal and data acquiring system. The system is characterized in that a pump light source coupling system can be used for replacing the pump light source flexibly and adjusting the dimension of a beam spot; an integrating sphere system adopting an optical fiber coupling collecting light signal can be used for loading liquid, powder, blocks and film samples; optical components and parts including a neutral filter can be inserted in the front end of an optical fiber coupling system; and a light splitting and detecting system adopts a ''single grating and single detector'' structure, so that the system can finish testing the yield of up and down conversion luminescence absolute quantum in a high dynamic range and a high sensitivity of ultraviolet / visible / near infrared wave bands (300-1700nm).

Description

technical field [0001] The invention relates to optical instruments and spectrum analysis technology, and provides an up-conversion luminescence absolute quantum yield testing system. technical background [0002] With the wide application of luminescent materials in the fields of energy, medical treatment and communication, the preparation of high-performance fluorescent materials has become a research hotspot and frontier in these fields, and the quantum efficiency of such materials directly affects their performance. With the continuous expansion of application fields, especially the wide application of phosphors, fluorescent probes, and optical quantum device materials in lighting display, biomedical diagnosis, and laser communication, researchers' demand for quantum yield measurement has changed from traditional The ultraviolet-visible band extends to the near-infrared band, and with the great application prospects of up-conversion luminescent materials in the field of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/443G01J3/02G01N21/64
Inventor 马恩朱浩淼陈学元
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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