Systems and methods for separating components of a multilayer stack of electronic components

摘要

Systems and methods for separating components of a multilayer stack of electronic components are disclosed herein. The multilayer stack of electronic components may include an internal photovoltaic cell and includes a substrate, a sacrificial anode portion, a cathode portion, and an electronic assembly. The sacrificial anode portion extends between the electronic assembly and the substrate and also extends between the electronic assembly and the internal photovoltaic cell, when present. The internal photovoltaic cell, when present, extends between the sacrificial anode portion and the cathode portion. The multilayer stack may be located within an electrically conductive fluid to form an electrochemical cell, and the methods include generating a potential difference between the cathode portion and the sacrificial anode portion and electrochemically oxidizing the sacrificial anode portion to dissolve the sacrificial anode portion within the electrically conductive fluid and separate the electronic assembly from the substrate.

主权项

1. An electrochemical cell, comprising:
an electrically conductive fluid; a multilayer stack of electronic components that includes an internal photovoltaic cell, a sacrificial anode portion, a cathode portion, and an electronic assembly, wherein the sacrificial anode portion extends between the electronic assembly and the substrate and operatively attaches the electronic assembly to the substrate, wherein the sacrificial anode portion extends between and electrically separates the electronic assembly from the internal photovoltaic cell, wherein the internal photovoltaic cell extends between and electrically separates the sacrificial anode portion from the cathode portion, wherein the multilayer stack is located within the electrically conductive fluid, and further wherein the electrically conductive fluid includes at least one of a liquid solution, an electrolyte solution, a salt solution, and a dilute salt solution; and a source of electromagnetic radiation, wherein the source of electromagnetic radiation is oriented to direct the electromagnetic radiation onto the internal photovoltaic cell, wherein at least one of a wavelength of the electromagnetic radiation and an intensity of the electromagnetic radiation is selected such that the internal photovoltaic cell generates a potential difference between the cathode portion and the sacrificial anode portion, wherein the potential difference produces dissolution of the sacrificial anode portion within the electrically conductive fluid, and further wherein a portion of the sacrificial anode portion is dissolved within the electrically conductive fluid.