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- W2255945199 abstract "Ni Schottky contacts on AlGaN/GaN heterostructures have been fabricated. The samples are then thermally treated in a furnace with N2 ambient at 600 °C for different times (0.5, 4.5, 10.5, 18, 33, 48 and 72 h). Current—voltage (I—V) and capacitance—voltage (C—V) relationships are measured, and Schrodinger's and Poisson's equations are self-consistently solved to obtain the characteristic parameters related to AlGaN/GaN heterostructure Schottky contacts: the two-dimensional electron gas (2DEG) sheet density, the polarization sheet charge density, the 2DEG distribution in the triangle quantum well and the Schottky barrier height for each thermal stressing time. Most of the above parameters reduce with the increase of stressing time, only the parameter of the average distance of the 2DEG from the AlGaN/GaN interface increases with the increase of thermal stressing time. The changes of the characteristic parameters can be divided into two stages. In the first stage the strain in the AlGaN barrier layer is present. In this stage the characteristic parameters change rapidly compared with those in the second stage in which the AlGaN barrier layer is relaxed and no strain is present." @default.
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- W2255945199 date "2011-04-01" @default.
- W2255945199 modified "2023-09-27" @default.
- W2255945199 title "Influence of thermal stress on the characteristic parameters of AlGaN/GaN heterostructure Schottky contacts" @default.
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- W2255945199 doi "https://doi.org/10.1088/1674-1056/20/4/047105" @default.
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