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Luminescent efficiency measuring method of organic electroluminescent device

A technology of luminous efficiency and luminescence, which is applied in the direction of electroluminescent light sources, testing of machine/structural components, photometry, etc., can solve the problem of not having the simultaneous measurement of brightness and voltage, and the inability to determine the luminous efficiency of organic electroluminescent devices And other issues

Inactive Publication Date: 2006-08-16
NORTHEAST NORMAL UNIVERSITY
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Problems solved by technology

None of these technical solutions has the function of measuring brightness, voltage, and current intensity at the same time, and it is impossible to determine the luminous efficiency of organic electroluminescent devices.

Method used

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  • Luminescent efficiency measuring method of organic electroluminescent device
  • Luminescent efficiency measuring method of organic electroluminescent device
  • Luminescent efficiency measuring method of organic electroluminescent device

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Embodiment Construction

[0021] Attached below figure 1 The present invention is described in detail with examples.

[0022] The working principle of the method for measuring the luminous efficiency of the above-mentioned organic electroluminescent device is as follows:

[0023] Under the control of the synchronization module 1 of the software part, the control module 2 sends a measurement command to the hardware part through the RS232 interface at the same time, and drives the voltage-stabilized power supply 6 to provide a specified voltage to the device under test 9 through the power line 7 and the power line 8, so that The device under test 9 emits light, and measures the current intensity at this time, and sends the current intensity to the data processing module 3 . When the device under test 9 emits light, the synchronization module 1 of the software part also instructs the control module 2 to drive the spectrum device 5 to start the light intensity measurement action, and sends the light inten...

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Abstract

A method for measuring luminous efficiency of organic electro fluorescence component includes forming software by synchronous module, control module and data module; sending out measuring command to hardware by software when measuring command from user is received; forming hardware by spectrum unit, power supply with stabilized voltage-current, serial communication interface and computer; driving component to light and collecting light brightness of component by hardware; sending collected data back to software for being processed by data processing module to calculate out luminous efficiency of measured component at different voltage.

Description

technical field [0001] The invention belongs to a method for measuring luminous efficiency, in particular to a method for measuring luminous efficiency of organic electroluminescent devices. Background technique [0002] Organic electroluminescence is the process of converting electrical energy into light energy, and its luminescence mechanism is carrier double-electrode injection luminescence. [0003] Judging from the research progress of organic electroluminescent devices, the real starting stage of research on organic electroluminescent display devices should be in 1987. In 1987, C.W.Tang used ultra-thin film technology to use diamine derivatives with better hole transport effects as the hole transport layer, and 8-hydroxyquinoline aluminum as the light-emitting layer. The brightness was as high as 1000cd / m2 at a driving voltage of 10V. Green luminescence, the efficiency of the device is 1.5lm / W, and the lifespan is more than 100 hours. After a short period of more tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/00G01J1/00G01R19/00G01R31/00G09G3/00G09G3/30H05B33/08H05B33/14H05B44/00
Inventor 杨贵福苏忠民朱东霞
Owner NORTHEAST NORMAL UNIVERSITY