Ultra-High Frequency Zinc-Oxide Schottky Diodes for Large-Area Wireless Systems

Recent large-area electronics (LAE) research has created key circuits and systems for wireless systems in the Internet of Things and 5G/6G [1], [2]. Among LAE devices, thin-film Schottky diodes typically reach higher frequencies than thin-film transistors (TFTs) thus providing critical functionality for wireless circuits. GHz thin-film Schottky diodes have been reported [3–7]. Their monolithic integration through LAE technologies could overcome the cost and reliability barriers facing the integration of discrete devices over large areas. However, low-temperature, plastic substrate compatible LAE processing remains a challenge to reaching high frequencies.