Application Cases

Experiment Name: Light-Emitting MOS Junction for Ultra-High-Resolution Quantum Dot Displays

Experiment Content:To avoid electrical crosstalk between sub-micron level light-emitting pixels and precise alignment between multiple functional layers, we propose a light-emitting MOS structure based on quantum dots. By measuring the optoelectronic characteristics of the device, such as voltage-frequency-luminance characteristics and voltage-frequency-emission spectrum characteristics, we analyzed the carrier transport behavior and revealed the working mechanism of the device.

Testing Equipment:Signal generator, spectrometer, photometer, Aigtek's ATA-2161 high-voltage amplifier, etc.

Figure 1: Schematic Diagram of the Experimental Setup

Experimental Process:

The output of the signal generator is connected to the input of Aigtek's ATA-2161 high-voltage amplifier, and the output of the high-voltage amplifier is connected to the device. The light-emitting unit of the device is coupled with the spectrometer to complete the device connection. Adjust the waveform, amplitude, and frequency of the signal generator, and set the amplification factor and output voltage of the high-voltage amplifier. The light emitted by the device is coupled into the spectrometer, which detects the device's emission. By adjusting the amplitude and frequency of the output voltage, the spectral changes with voltage amplitude and frequency can be obtained. The high-voltage amplifier can amplify the output voltage to meet the driving voltage required by the device.

Experimental Results:

Figure 2: Experimental Results

The spectral-voltage relationship at a frequency of 100 kHz and the spectral-frequency relationship at a voltage of 35 V were measured. As the driving voltage increased from 25 V to 52.5 V, the luminance increased with the increase in driving voltage amplitude. Additionally, when the driving frequency was below the optimal frequency for light emission, the luminance increased with the increase in driving frequency; when the driving frequency was above the optimal frequency, the luminance decreased with the increase in driving frequency. Moreover, the central wavelength of the device's emission hardly shifted with changes in voltage and frequency, indicating high color stability of the device.

Power Amplifier Recommendation: ATA-2161 High-Voltage Amplifier

Figure: Performance Parameters of the ATA-2161 High-Voltage Amplifier

Xi'an Aigtek Electronics is a high-tech company specializing in the research, development, production, and sales of electronic measurement instruments such as power amplifiers, high-voltage amplifiers, power signal sources, preamplifiers for weak signals, high-precision voltage sources, and high-precision current sources. It provides users with competitive testing solutions. Aigtek has become a widely recognized supplier of instruments and equipment with a broad product line and considerable scale, offering free trials of demo units. For more information on power amplifiers and other products, please continue to follow the Aigtek official website at www.aigtek.cn or call 029-88865020.