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Lanthanide luminescence to mimic molecular logic and computing through physical inputs
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The remarkable advances in molecular logic reported in the last decade demonstrate the potential of luminescent molecules for logical operations, a paradigm-changing concerning silicon-based electronics. Trivalent lanthanide (Ln3+) ions, with their characteristic narrow line emissions, long-lived excited states, and photostability under illumination, may improve the state-of-the-art molecular logical devices. Here, the use of monolithic silicon-based structures incorporating Ln3+ complexes for performing logical functions is reported. Elementary logic gates (AND, INH, and DEMUX), sequential logic (KEYPAD LOCK), and arithmetic operations (HALF ADDER and HALF SUBTRACTOR) exhibiting a switching ratio >60% are demonstrated for the first time using nonwet conditions. Additionally, this is the first report showing sequential logic and arithmetic operations combining molecular Ln3+ complexes and physical inputs. Contrary to chemical inputs, physical inputs may enable the future concatenation of distinct logical functions and reuse of the logical devices, a clear step forward toward input–output homogeneity that is precluding the integration of nowadays molecular logic devices.
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HERNÁNDEZ-RODRÍGUEZ, Miguel A., et al. Lanthanide luminescence to mimic molecular logic and computing through physical inputs. Advanced Optical Materials. 2020. Vol. 8, núm. 12, pàgs. 2000312. ISSN 2195-1071. [consulta: 7 de maig de 2026]. Disponible a: https://hdl.handle.net/2445/208202