Chang-Luen Wu

Title: Innovations of Chang-Luen Wu in GaAs Transistors

Introduction

Chang-Luen Wu is a notable inventor based in Tainan, Taiwan. He has made significant contributions to the field of semiconductor technology, particularly in the development of advanced GaAs transistors. With a total of 2 patents, his work has implications for high-speed and low-noise electronic applications.

Latest Patents

One of Chang-Luen Wu's latest patents involves the creation of multiple-function GaAs transistors. This invention introduces a new four-terminal type and multiple delta-doped transistors, which are grown using low-pressure metalorganic chemical vapor deposition (LP-MOCVD). The epilayers are developed on n.sup.+ -GaAs substrates. The real-space transfer transistors (RST) feature a collector located beneath the substrate, showcasing very strong negative differential resistance phenomena. The RST structure, utilizing an InGaAs channel, exhibits exceptional characteristics, including a peak-to-valley current ratio of up to 430,000 at room temperature and a peak current reaching as high as 100 mA. The device also demonstrates sharp charge injection and a broad valley current of 5.5V. Furthermore, high-performance heterostructure field effect transistors can be integrated on the same wafer by evaporating a gate between the source and drain electrodes. To minimize leakage current, an ohmic recession is implemented at the source and drain. These innovative devices are poised for use in high-speed, low-noise, and high-power microwave oscillators and amplifiers.

Career Highlights

Chang-Luen Wu is affiliated with the National Science Council, where he continues to advance research in semiconductor technologies. His work has garnered attention for its potential applications in various electronic devices.

Collaborations

Chang-Luen Wu collaborates with Wei-Chou Hsu, contributing to the development of cutting-edge technologies in their field.

Conclusion

Chang-Luen Wu's contributions to the field of GaAs transistors highlight his innovative spirit and dedication to advancing semiconductor technology. His patents reflect a commitment to enhancing the performance of electronic devices, paving the way for future advancements in the industry.