Multifunctional transient electroluminescence measuring system

Abstract

The invention discloses a multifunctional transient electroluminescence measurement system, which comprises a function generator, a sample resistor I, a sample cell, a photodiode, an oscilloscope, a monochromator, a photomultiplier and a computer, and is characterized in that the sample cell is connected with the sample resistor I through a conducting wire, the sample resistor I is connected withthe function generator through a conducting wire, the sample cell is connected with the photodiode through a conducting wire, the photodiode is connected with the oscilloscope through a conducting wire, the function generator is connected with the oscilloscope through a conducting wire, the monochromator corresponds to the sample cell, the monochromator is connected with the photomultiplier through a conducting wire, and the photomultiplier is connected with the computer through a conducting wire. According to the invention, a traditional single and complex spectrum or waveform measuring system is changed, the two functions are ingeniously combined into a whole, a grating spectrometer composed of a monochromator and a photomultiplier is used for replacing a spectrometer high in price, theexperiment effect can be achieved as well, and the needed cost of the system is greatly reduced.

Description

technical field [0001] The invention relates to the technical fields of spectrum measurement and electroluminescence, in particular to a multifunctional transient electroluminescence measurement system. Background technique [0002] Transient electroluminescence, transient electroluminescence is a method of measuring electrical pulses. A square wave voltage pulse is provided to the device through an electric pulse generator, and the device will generate a time-dependent electroluminescent signal. Due to the low carrier mobility of the organic semiconductor material, the time when the device starts to emit light is related to the pulse The voltage has a certain time delay. This delay is generally considered to be related to the mobility of minority carriers in light-emitting devices, so that the mobility of minority carriers can be determined through this delay. However, there is no perfect system on the market that can The spectrum image obtained by measuring electrolumines...

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Problems solved by technology

Provide a square wave voltage pulse to the device through an electric pulse generator, and the device will generate a time-dependent electroluminescent signal. Due to the low carrier mobility of the organic semiconductor material, the time when the device starts to emit light is related to the pulse The voltage has a certain time delay. This delay is generally considered to be related to the mobility of minority carriers in light-emitting devices, so that the mobility of minority carriers can be determined through this delay. However, there is no perfect system on the market now. The spectral image obtained by measuring electroluminescence and the waveform of the corresponding electrical signal, therefore, it is urgent to design a multifunctional transient electroluminescence measurement system to solve the above problems

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