Electro-Optical Logics by Three-Terminal Quantum-Well-Light-Emitting Transistors Integration

• Hao-Tien Cheng, Ya Liang, Yun-Ting Huang, Shu-Jui Hsu, Wei-Hao Lin, Milton Feng, and Chao-Hsin Wu
• received 12/28/2023; accepted 05/09/2024; posted 05/09/2024; Doc. ID 516274
• Abstract: The three-terminal quantum-well-light-emitting transistors (QW-LETs) possess appealing characteristics, including multipath bidirectional electrical and optical inputs/outputs, transistor functionalities, and picosecond recombination lifetimes. This article presents the inaugural demonstration of electro-optical sequential logic circuits—first implementations of set-reset (SR) latches—these two latches feature both electrical and optical connectivity through a three-terminal QW-LET platform. Universal gates, such as NOR and NAND logic gates, have been manufactured and showcased, exhibiting accurate logic functionalities. Additionally, we propose two electro-optical SR latches based on NOR and NAND logic gates — the electro-optical registers, serving as fundamental building blocks for more intricate optoelectronic field-programmable gate arrays. The monolithically integrated QW-LET platform holds the potential to offer a comprehensive range of potent building blocks for optoelectronic chips and high-performance optoelectronic computing.