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Esaki diodes live and learn.

Leo Esaki¹, Masatoshi Kitamura, Satoshi Iwamoto

¹Science and Technology Promotion Foundation of Ibaraki, Tsukuba, Ibaraki, Japan. leoesaki@epochal.or.jp

Proceedings of the Japan Academy. Series B, Physical and Biological Sciences

|May 1, 2010

Summary

This summary is machine-generated.

Shelf-life tests reveal Esaki diodes experience a slight decrease in tunnel current after 50 years. This degradation is linked to a 0.25% widening of the tunnel path, impacting semiconductor device longevity.

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Area of Science:

Semiconductor Physics
Materials Science
Device Engineering

Background:

Esaki diodes, also known as tunnel diodes, are semiconductor devices exhibiting unique negative differential resistance.
Understanding the long-term stability and degradation mechanisms of electronic components is crucial for reliability.

Purpose of the Study:

To investigate the long-term shelf-life effects on Esaki diodes.
To quantify changes in electrical characteristics over an extended period.

Main Methods:

Esaki diodes were subjected to shelf-life testing for approximately 50 years.
Tunnel current measurements were performed before and after the extended storage period.

Main Results:

A minute but measurable reduction in tunnel current was observed after 50 years.
The observed current reduction is attributed to a 0.25% widening of the tunnel path.

Conclusions:

Esaki diodes exhibit gradual degradation over extended storage periods.
The widening of the tunnel path is a potential factor contributing to the reduced tunnel current in aged Esaki diodes.