Reprogrammable Binary and Ternary Optoelectronic Logic Gates Composed of Nanostructured GaN Photoelectrodes with Bipolar Photoresponse Characteristics

• DOI: 10.1002/adom.202300129
• Publication Date: 2023-03-30T16:15:04Z
• Authors: Yuanmin Luo; Danhao Wang; Yang Kang; Shi Fang; Xin Liu; Wei Chen; Huabin Yu; Hongfeng Jia; Muhammad Hunain M...; Haochen Zhang; Dongyang Luo; Xiyu Sun; Liuan Li; Jr‐Hau He; Haiding Sun
• Keywords: Optical computing

Abstract The elementary electronic‐logic‐gates, performing basic logic functions using electric signals as input, act a building block of modern digital circuits. Intriguingly, the optoelectronic‐logic‐gates (OLGs), composed optical devices, are emerging new platform which enables faster and large‐capacity data transmission processing by photons input. However, strict operation principle classic for example, unidirectional photoresponse photodetector, restricts functional enrichment OLGs. Herein, reprogrammable OLGs in photoelectrochemical (PEC)‐environment reported employing gallium‐nitride semiconductor p–n nanowires photoelectrodes where bidirectional photocurrent is achieved, leading to demonstration various binary including “NOT”, “XOR”, “OR”. Strikingly, thanks versatile tunability PEC‐photoelectrodes, function these switchable simply adjusting programming inputs light intensity, bias voltage, electrolyte condition, physicochemical properties nanowire surface. Most importantly, unique ternary OLGs, “OR” gates, can also be realized based on ones just tuning their applied higher complexity applications, without changing device architecture. Such could provide avenue toward next‐generation circuits fast computing data‐processing future.