Controllable large scaled nanotwin formation in Cu film at lower temperatures
Controllable large scaled nanotwin formation in Cu film at lower temperatures
复制标题
较低温度下铜膜中可控的大规模纳米孪晶形成
DOI:
10.1088/0022-3727/49/40/40lt01
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发表时间:
2016-09
期刊:
影响因子:
--
通讯作者:
Le Luo
中科院分区:
文献类型:
--
作者:
Gong Cheng;Le Luo
By means of low temperature rapid annealing, it is found that an abrupt thermal stressrelaxation occurs in Cu film at the beginning of cooling, which greatly increases the drivingforce for twin nucleation and growth. Consequently, high-density nanotwins (nt) aresuccessfully produced in as-plated Cu film at wafer-level under temperatures as low as 300 °C,which is much lower than conventional processes (above 550 °C), making it fully compatiblewith the semiconductor industry. This enhanced annealing processing provides not only a costeffective approach for large scaled void-free nt-Cu synthesis together with half-quantitatively controllable twin spacing, but demonstrates the prospect and significance of inconspicuousannealed nanotwins on the application of microelectronics.
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