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- W3130220454 abstract "Gold based alloys, commonly used as ohmic contacts for solar cells, are known to react readily with GaAs. It is shown that the contact interaction with the underlying GaAs can continue even at room temperature upon aging, altering both the electrical characteristics of the contacts and the nearby pn junction. Au-Ge-Ni as-deposited (no heat treatment) contacts made to thin emitter (0.15 micrometer) GaAs diodes have shown severe shunting of the pn junction upon aging for several months at room temperature. The heat-treated contacts, despite showing degradation in contact resistance did not affect the underlying pn junction. Au-Zn-Au contacts to p-GaAs emitter (0.2 micrometer) diodes, however, showed slight improvement in contact resistance upon 200 C isothermal annealing for several months, without degrading the pn junction. The effect of aging on electrical characteristics of the as-deposited and heat-treated contacts and the nearby pn junction, as well as on the surface morphology of the contacts are presented." @default.
- W3130220454 created "2021-03-01" @default.
- W3130220454 creator A5044001316 @default.
- W3130220454 date "1988-07-01" @default.
- W3130220454 modified "2023-09-26" @default.
- W3130220454 title "Aging behavior of Au-based ohmic contacts to GaAs" @default.
- W3130220454 hasPublicationYear "1988" @default.
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