USTC Unveils Three-Terminal Diode for Optoelectronic Revolution

The TTD, as elucidated by the research team, showcases a dual functionality, serving both as a high-performance emitter and a multifunctional photodetector.

In a groundbreaking stride toward advancing optoelectronic technologies, researchers at the iGaN Lab, University of Science and Technology of China (USTC) led by Professor Haiding Sun have introduced a transformative innovation: the three-terminal diode (TTD). This pioneering device promises to reshape the landscape of optical wireless communications and optoelectronic logic operations.

The TTD, as elucidated by the research team, showcases a dual functionality, serving both as a high-performance emitter and a multifunctional photodetector. Leveraging its distinctive operational mode, this diode represents a significant leap forward in the realm of optoelectronic components.

As an emitter, the TTD boasts an impressive 64% increase in modulation bandwidth compared to conventional counterparts. With built-in bias tee functionality, it achieves unparalleled modulation capabilities, reaching an astounding 263 MHz. Such remarkable performance far surpasses traditional LEDs configured with bias tee arrangements, catapulting optical wireless communications into new realms of speed and efficiency.

Notably, the team demonstrated the transmission of data at rates up to 1.288 Gbps across short distances, showcasing the immense potential of this technology in high-speed data transfer applications. This breakthrough opens avenues for seamless, high-bandwidth communication in scenarios ranging from intra-device data transfer to inter-device connectivity, revolutionizing the way data is transmitted and received in modern technological ecosystems.

Transitioning seamlessly into its role as a photodetector, the TTD exhibits remarkable versatility. By adjusting the working voltage of the p-n diode, the device effortlessly switches operational modes, enabling a spectrum of optoelectronic logic operations without necessitating structural modifications.

Through the application of a DC bias to the third terminal in conjunction with incident light, the TTD facilitates logic operations such as “NAND” and “NOR,” laying the groundwork for advanced computing and data processing functionalities. This capability holds immense promise for applications requiring adaptable logic processing, such as reconfigurable computing architectures and integrated optoelectronic systems.

The simplicity of its structure and fabrication process underscores the scalability and accessibility of this innovative architecture. With the potential for widespread application across diverse semiconductor materials, including II-IV and III-V compounds, the TTD heralds a new era of high-speed and multifunctional optoelectronic integrated devices.

Collaborating with esteemed institutions such as Fudan University, The Australian National University, King Abdullah University of Science and Technology, and Wuhan University, USTC spearheaded this transformative research endeavor. This collaborative effort not only showcases the interdisciplinary nature of scientific innovation but also underscores the global impact and relevance of the TTD technology.

With its revolutionary capabilities and broad-reaching implications, the three-terminal diode stands poised to catalyze innovation across industries, paving the way for a future defined by unprecedented speed, efficiency, and functionality in optical communication and computing systems. From enhanced data transmission in telecommunications networks to advanced computing paradigms leveraging reconfigurable logic operations, the TTD promises to unlock new frontiers in technology, driving progress and innovation in the digital age.