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Lanthanide luminescence to mimic molecular logic and computing through physical inputs

AuthorsHernández‐Rodríguez, Miguel A.; Brites, Carlos; Antorrena, Guillermo; Piñol, Rafael; Cases, Rafael; Pérez‐García, Lluïsa; Rodrigues, Mafalda; Plaza, José Antonio; Torras, Núria; Millán, Ángel ; Carlos, Luis D.
Issue Date2020
CitationAdvanced Optical Materials 8(12): 2000312 (2020)
AbstractThe 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.
Publisher version (URL)https://doi.org/10.1002/adom.202000312
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