Invention Grant
- Patent Title: Semiconductor structure including a layer of a first metal between a diffusion barrier layer and a second metal and method for the formation thereof
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Application No.: US14512850Application Date: 2014-10-13
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Publication No.: US09620453B2Publication Date: 2017-04-11
- Inventor: Axel Preusse , Romy Liske , Marcus Wislicenus , Robert Krause , Lukas Gerlich , Benjamin Uhlig , Sascha Bott
- Applicant: GLOBALFOUNDRIES Inc.
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES Inc.
- Current Assignee: GLOBALFOUNDRIES Inc.
- Current Assignee Address: KY Grand Cayman
- Agency: Amerson Law Firm, PLLC
- Main IPC: H01L23/532
- IPC: H01L23/532 ; H01L21/768 ; H01L21/285 ; H01L21/288 ; C25D7/12 ; C23C18/16 ; C23C18/54 ; C25D3/38

Abstract:
A method includes providing a semiconductor structure including a recess. The recess includes at least one of a contact via and a trench. A layer of a first metal is deposited over the semiconductor structure. An electroless deposition process is performed. The electroless deposition process removes a first portion of the layer of first metal from the semiconductor structure and deposits a first layer of a second metal over the semiconductor structure. An electroplating process is performed. The electroplating process deposits a second layer of the second metal over the first layer of second metal. A second portion of the layer of first metal remains in the semiconductor structure.
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