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- W1990218521 abstract "The energy barrier at heterojunctions can be minimized by introducing a parabolic grading potential. For ternary materials with a strong bowing effect in band gap energy, such as Zn(Se,Te), the composition must vary nonparabolically in order to have the required parabolic grading potential. In this letter, a new compositional grading style for Zn(Se,Te) graded band gap ohmic contacts to p-type ZnSe has been obtained through a simplified analytical model where both the bowing factor in ternary band gap energy and the change in electron affinity χ with alloy composition are included. To show the effectiveness of the proposed grading style, it is compared with both parabolic and linear grading in numerical calculations. The specific contact resistance of the proposed optimized compositional grading is about two orders of magnitude lower than that of a linear grading over a grading distance of 170 to 310 Å, and about one order of magnitude lower than that of a parabolic grading at a grading distance less than 220 Å." @default.
- W1990218521 created "2016-06-24" @default.
- W1990218521 creator A5041648101 @default.
- W1990218521 date "1995-09-18" @default.
- W1990218521 modified "2023-09-27" @default.
- W1990218521 title "Optimization of compositional grading in Zn(Se,Te) graded ohmic contacts to p‐type ZnSe" @default.
- W1990218521 cites W2057925354 @default.
- W1990218521 doi "https://doi.org/10.1063/1.115034" @default.
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