公开(公告)号：US11048136B2

公开(公告)日：2021-06-29

申请号：US16260860

申请日：2019-01-29

Applicant: Massachusetts Institute of Technology

Inventor： Dmitri Kalaev ,  Harry L. Tuller

IPC: G02F1/1524 ,  G02F1/163

Abstract: Reconfigurable, active optical components can flexibly manipulate light. One example of these components is an electro-chemo-optical device that utilizes a metal oxide film with a complex refractive index that varies as a function of an oxygen vacancy concentration. The optical device may include a metal oxide film, a first electrode, and a second electrode. The first electrode and the second electrode may be used to supply a bias voltage to induce a change in the oxygen vacancy concentration in order to change the optical properties (absorbance, transmittance, and/or reflectance) of the optical device. The magnitude and spatial distribution of the oxygen vacancy concentration may be altered to affect the optical properties of the optical device. In some designs, the optical device may also include an ionic conductor and oxygen source to supply/receive oxygen ions to/from the metal oxide film.

公开(公告)号：US10910559B2

公开(公告)日：2021-02-02

申请号：US16427597

申请日：2019-05-31

Applicant: Massachusetts Institute of Technology

Inventor： Thomas Defferriere ,  Dmitri Kalaev ,  Harry L. Tuller ,  Jennifer Lilia Rupp

IPC: G11C13/00 ,  G11C13/04 ,  H01L45/00

Abstract: An optoelectronic memristor includes a first electrode, a second electrode, and a solid electrolyte in between that is in electrical communication with the first electrode and the second electrode. The solid electrolyte has an electronic conductivity of about 10−10 Siemens/cm to about 10−4 Siemens/cm at room temperature. The first electrode, and optionally the second electrode, can be optically transparent at a specific wavelength and/or a wavelength range. A direct current (DC) voltage source is employed to apply an electric field across the solid electrolyte, which induces a spatial redistribution of ionic defects in the solid electrolyte. In turn, this causes a change in electrical resistance of the solid electrolyte. The application of the electric field can also cause a change in an optical property of the solid electrolyte at the specific wavelength, and/or at the wavelength range (or a portion thereof).