Optical Memory Isolation via Dynamic Resource Reallocation
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Solution Overview
Problem
MicroLEDs face challenges in achieving high efficiency and low energy consumption due to sidewall defects during manufacturing, which impact light emission and increase energy consumption per bit, especially as they are scaled down for high-bandwidth optical interconnects in data centers.
Innovation Solution
Implementing magnesium (Mg) passivation on the sidewalls of MicroLEDs through tilted ion implantation, combined with a dielectric layer, to neutralize surface states and create a depletion region, reducing non-radiative recombination and enhancing carrier lifetime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MicroLEDs are scaled down for high-bandwidth optical interconnects, then bandwidth and integration density are improved, but sidewall defects increase causing higher energy consumption per bit
Solution Approach 1:
The patent applies magnesium passivation specifically to the sidewalls of MicroLEDs through tilted ion implantation. This localized treatment addresses the sidewall defects that cause non-radiative recombination without affecting the overall device structure. The dielectric layer is also applied locally to the sidewalls to complete the passivation effect, reducing energy loss at the critical sidewall regions while maintaining the scaled-down dimensions needed for high bandwidth.
2Reliability
If Magnesium passivation is applied through tilted ion implantation, then non-radiative recombination is reduced and carrier lifetime is enhanced, but manufacturing process complexity increases
Solution Approach 1:
The magnesium passivation is applied during the manufacturing process through tilted ion implantation before final device operation. This preliminary action prevents sidewall defects from causing non-radiative recombination in the first place, rather than attempting to correct them afterward. The process is integrated into the existing MicroLED fabrication flow, adding the passivation step at the appropriate stage to ensure reliable device performance without requiring complex post-processing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The Mg passivation technique maintains high efficiency and modulation speed while reducing energy consumption per bit from 1 pJ/bit to 0.3 pJ/bit, enabling scalable and cost-effective high-speed optical communication.
Implementation Method 1
Implementing magnesium (Mg) passivation on the sidewalls of MicroLEDs through tilted ion implantation
Implementation Method 2
neutralize surface states and create a depletion region, reducing non-radiative recombination
Data Source
AI summary
Examples described herein relate to circuitry coupled to a memory configured to: report telemetry data indicative of access to a first region of the memory; and based on a first command, selectively adjust resources of the memory allocated to communications between a first process and a second process. In some examples, the first region of the memory is accessible to the first process and the second process via optical interconnects. In some examples, the resources of the memory comprise one or more of: a number of addresses in a memory region, a set of memory addresses, or memory bandwidth.