Application Cases

With the rapid development of 5G communications, autonomous driving, and the Internet of Things, semiconductor optoelectronic devices serve as core components for converting optical and electrical signals and transmitting information. Their performance directly determines the functionality and reliability of equipment. As a result, semiconductor optoelectronic device testing has become a "gatekeeper" throughout the entire process of research and development, production, and quality inspection.

About Optoelectronic Devices
Optoelectronic devices are electronic components that rely on physical mechanisms such as the photoelectric effect in semiconductor materials to enable the conversion between optical and electrical signals. When light irradiates semiconductor materials, electrons absorb photon energy to generate electron-hole pairs, thereby altering the electrical properties of the material. Conversely, applying electrical signals can also stimulate light emission from semiconductors.

Categories: Light-emitting devices, photodetection devices, optical display devices, optical storage devices, etc.
Applications: Widely used in fields such as displays, lighting, remote controls, scanners, optical fiber communications, and more.

Sharing Application Cases of Semiconductor Optoelectronic Device Testing
Due to the limited signal power output from signal generators, which often falls short of meeting the high-voltage signal requirements for optoelectronic device testing, power amplifiers are essential. Power amplifiers can amplify the signals output by signal generators, significantly increasing the voltage amplitude and output power while preserving the signal frequency and waveform characteristics, ultimately producing adjustable high-voltage AC signals.

Aigtek, as a high-tech enterprise in China specializing in the research, development, production, and sales of measurement instruments such as power amplifiers, has conducted in-depth research in the field of semiconductor optoelectronic device testing. This time, we have compiled some past experimental cases in the direction of semiconductor optoelectronic device testing, hoping to assist engineers engaged in research in this field.

▼ Application of Power Amplifiers in Driving Non-Carrier Injection Micro-LEDs

This experiment fabricated a non-carrier injection micro-LED device with aluminum oxide as the insulating layer. A signal generator was used to produce AC signals, which were amplified and output via the ATA-1220E power amplifier to drive the non-carrier injection micro-LED. This achieved a wide voltage operating window for non-carrier injection micro-LEDs.

▼ Application of High-Voltage Amplifiers in the Study of Quantum Dot Display Light-Emitting MOS Junctions

To avoid electrical crosstalk between sub-micron light-emitting pixels and precise alignment of multi-layer functional layers, this experiment proposed a light-emitting MOS structure based on quantum dots. By measuring the optoelectronic characteristics of the device, such as voltage-frequency-light intensity properties and voltage-frequency-light spectrum properties, the carrier transport behavior was analyzed, and the device's working mechanism was revealed.

▼ Application of High-Voltage Amplifiers in Non-Contact, Non-Destructive In Situ Detection of Quantum Dot Thin Films

As a core functional layer, quantum dot thin films play a critical role in various optoelectronic devices such as light-emitting diodes and displays. The non-uniformity of quantum dot thin film thickness inevitably affects the overall optoelectronic characteristics of the devices. However, traditional methods struggle to quickly obtain information about thickness distribution without introducing additional damage. This experiment proposed a non-contact, non-destructive method for detecting the thickness of quantum dot thin films. Under high electric fields, quantum dot thin films exhibit photoluminescence quenching, which is related to the thickness of the quantum dot thin film and the magnitude of the applied voltage.

▼ Application of High-Voltage Amplifiers in Self-Powered Optoelectronic Device High-Voltage Detection Research

This experiment proposed a self-powered high-voltage monitoring device with strong anti-interference capabilities, where the light signal generated by a Maxwell Displacement Current-driven Light Emitting Diode (MDC-LED) is used to judge changes in high-voltage signals. Simulations and experiments demonstrated that MDC-LED can reshape the electric field near power lines, producing an approximately uniform electric field with strong anti-interference capabilities.

▼ Application of Power Amplifiers in the Study of Optoelectronic Characteristics of μLED Devices

Based on the non-conductor contact μLED model, this experiment fabricated corresponding devices. Subsequently, the optoelectronic characteristics of this new type of μLED structure, such as frequency-voltage, current-voltage, and light intensity properties under AC signal driving, were investigated.

More Application Case Sharing
After years of accumulation, Aigtek has established its own power amplifier application case library, gathering cutting-edge experimental research results from advanced fields to help researchers expand their thinking and achieve innovative breakthroughs! More power amplifier application cases will be shared in the future. Stay tuned~