Systems and methods for separating components of a multilayer stack of electronic components
First Claim
1. A multilayer stack of electronic materials, comprising:
- a substrate;
an electronic assembly, wherein the electronic assembly includes a sacrificial photovoltaic cell; and
a sacrificial anode portion, wherein the sacrificial anode portion is located between the electronic assembly and the substrate and operatively attaches the electronic assembly to the substrate, wherein the sacrificial anode portion is configured to be dissolved via electrochemical oxidation to permit separation of the electronic assembly from the substrate, and further wherein the sacrificial photovoltaic cell is in electrical communication with the sacrificial anode portion and is configured to apply an electric potential to the sacrificial anode portion to power dissolution of the sacrificial anode portion.
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Accused Products
Abstract
Systems and methods for separating components of a multilayer stack of electronic components are disclosed herein. The multilayer stack may include an electronic assembly, a substrate, and a sacrificial anode portion that is located between the electronic assembly and the substrate and that operatively attaches the electronic assembly to the substrate. The methods may include locating the multilayer stack within an electrically conductive fluid to form an electrochemical cell and generating a potential difference between a cathode portion of the electronic assembly and the sacrificial anode portion. The methods further may include separating the electronic assembly from the substrate by electrochemically oxidizing the sacrificial anode portion to dissolve the sacrificial anode portion within the electrically conductive solution.
12 Citations
22 Claims
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1. A multilayer stack of electronic materials, comprising:
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a substrate; an electronic assembly, wherein the electronic assembly includes a sacrificial photovoltaic cell; and a sacrificial anode portion, wherein the sacrificial anode portion is located between the electronic assembly and the substrate and operatively attaches the electronic assembly to the substrate, wherein the sacrificial anode portion is configured to be dissolved via electrochemical oxidation to permit separation of the electronic assembly from the substrate, and further wherein the sacrificial photovoltaic cell is in electrical communication with the sacrificial anode portion and is configured to apply an electric potential to the sacrificial anode portion to power dissolution of the sacrificial anode portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of separating an electronic assembly from a multilayer stack of electronic components that includes the electronic assembly, a substrate, a cathode portion, and a sacrificial anode portion that is located between the electronic assembly and the substrate and that operatively attaches the electronic assembly to the substrate, the method comprising:
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locating the multilayer stack within an electrically conductive fluid to form an electrochemical cell; generating a potential difference between the cathode portion and the sacrificial anode portion; and separating the electronic assembly from the substrate by electrochemically oxidizing the sacrificial anode portion to dissolve the sacrificial anode portion within the electrically conductive fluid. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A multilayer stack of electronic materials, comprising:
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a substrate; an electronic assembly, wherein the electronic assembly includes; (i) a device portion that includes at least one of a device layer, a semiconductor device, a III-V semiconductor device, a photovoltaic cell, an inverted photovoltaic cell, and an inverted metamorphic solar cell; and (ii) a sacrificial photovoltaic cell, wherein the sacrificial photovoltaic cell is located between the substrate and the device portion; and a sacrificial anode portion, wherein the sacrificial anode portion is located between the electronic assembly and the substrate and operatively attaches the electronic assembly to the substrate, and further wherein the sacrificial anode portion is configured to be dissolved via electrochemical oxidation to permit separation of the electronic assembly from the substrate.
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21. A multilayer stack of electronic materials, comprising:
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a substrate; an electronic assembly; and a sacrificial anode portion, wherein the sacrificial anode portion is located between the electronic assembly and the substrate and operatively attaches the electronic assembly to the substrate, wherein the sacrificial anode portion is configured to be dissolved via electrochemical oxidation to permit separation of the electronic assembly from the substrate, and further wherein the sacrificial anode portion is an epitaxially grown sacrificial anode portion.
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22. A multilayer stack of electronic materials, comprising:
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a substrate; an electronic assembly; a sacrificial anode portion, wherein the sacrificial anode portion is located between the electronic assembly and the substrate and operatively attaches the electronic assembly to the substrate, and further wherein the sacrificial anode portion is configured to be dissolved via electrochemical oxidation to permit separation of the electronic assembly from the substrate; and a cathode portion, wherein the sacrificial anode portion is configured to dissolve responsive to a potential difference between the sacrificial anode portion and the cathode portion being greater than a threshold potential difference.
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Specification