Carregant...
Fitxers
Tipus de document
ArticleVersió
Versió publicadaData de publicació
Tots els drets reservats
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/188441
Light-activated electroforming in ITO/ZnO/p-Si resistive switching devices
Títol de la revista
Director/Tutor
ISSN de la revista
Títol del volum
Recurs relacionat
Resum
We report on light-activated electroforming of ZnO/p-Si heterojunction memristors with transparent indium tin oxide as the top electrode. Light-generated electron-hole pairs in the p-type substrate are separated by the external electric field and electrons are injected into the active ZnO layer. The additional application of voltage pulses allows achieving different resistance states that end up in the realization of the low resistance state (LRS). This process requires much less voltage compared to dark conditions, thus avoiding undesired current overshoots and achieving a self-compliant device. The transport mechanisms governing each resistance state are studied and discussed. An evolution from an electrode-limited to a space charge-limited transport is observed along the electroforming process before reaching the LRS, which is ascribed to the progressive formation of conductive paths that consequently induce the growth of conductive nanofilaments through the ZnO layer. This work was financially supported by the Spanish Ministry of Economy and Competitiveness (Project Nos. TEC2012-38540-C02-01 and TEC2016-76849-C2-1-R). O.B. also acknowledges the subprogram "Ayudas para Contratos Predoctorales para la Formación de-Doctores" from the Spanish Ministry of Economy and Competitiveness for economical support. J.L.F. acknowledges the subprogram "Ayudas para la Formación de Profesorado Universitario" (No. FPU16/06257) from the Spanish Ministry of Education, Culture and Sports for economical support. X.P., C.L., and C.G. are grateful to C. Frilay for his expertise in the maintenance of the sputtering setup used for the growth of the ZnO films.
Matèries
Matèries (anglès)
Citació
Citació
BLÁZQUEZ GÓMEZ, Josep oriol, FRIEIRO CASTRO, Juan luis, LÓPEZ VIDRIER, Julià, GUILLAUME, Clément, PORTIER, X., LABBÉ, Christophe, HERNÁNDEZ MÁRQUEZ, Sergi, GARRIDO FERNÁNDEZ, Blas. Light-activated electroforming in ITO/ZnO/p-Si resistive switching devices. _Applied Physics Letters_. 2019. Vol. 115, núm. 26, pàgs. 261104. [consulta: 24 de gener de 2026]. ISSN: 0003-6951. [Disponible a: https://hdl.handle.net/2445/188441]