Structure and method to improve threshold voltage of MOSFETS including a high K dielectric

Invention Grant

US08173531B2 Structure and method to improve threshold voltage of MOSFETS including a high K dielectric 有权

Title translation: 提高包括高K电介质的MOSFET的阈值电压的结构和方法

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Patent Title: Structure and method to improve threshold voltage of MOSFETS including a high K dielectric
Patent Title (中): 提高包括高K电介质的MOSFET的阈值电压的结构和方法
Application No.: US12535183

Application Date: 2009-08-04
Publication No.: US08173531B2

Publication Date: 2012-05-08
Inventor: Sunfei Fang , Brian J. Greene , Effendi Leobandung , Qingqing Liang , Edward P. Maciejewski , Yanfeng Wang
Applicant: Sunfei Fang , Brian J. Greene , Effendi Leobandung , Qingqing Liang , Edward P. Maciejewski , Yanfeng Wang
Applicant Address: US NY Armonk
Assignee: International Business Machines Corporation
Current Assignee: International Business Machines Corporation
Current Assignee Address: US NY Armonk
Agency: Scully, Scott, Murphy & Presser, P.C.
Agent Joseph P. Abate, Esq.
Main IPC: H01L21/8238
IPC: H01L21/8238 ; H01L21/336

Structure and method to improve threshold voltage of MOSFETS including a high K dielectric

Abstract:

A method of forming threshold voltage controlled semiconductor structures is provided in which a conformal nitride-containing liner is formed on at least exposed sidewalls of a patterned gate dielectric material having a dielectric constant of greater than silicon oxide. The conformal nitride-containing liner is a thin layer that is formed using a low temperature (less than 500° C.) nitridation process.

Abstract(Chinese):

提供了形成阈值电压控制的半导体结构的方法，其中在至少暴露的具有大于氧化硅的介电常数的栅极介电材料的侧壁上形成共形氮化物衬里。含氮氮化物的内衬是使用低温（小于500℃）的氮化工艺形成的薄层。

Public/Granted literature

US20110031554A1 STRUCTURE AND METHOD TO IMPROVE THRESHOLD VOLTAGE OF MOSFETS INCLUDING A HIGH K DIELECTRIC Public/Granted day:2011-02-10

Information query

Espacenet

IPC分类:

H	电学
H01	基本电气元件
H01L	半导体器件；其他类目中不包括的电固体器件（使用半导体器件的测量入G01；一般电阻器入H01C；磁体、电感器、变压器入H01F；一般电容器入H01G；电解型器件入H01G9/00；电池组、蓄电池入H01M；波导管、谐振器或波导型线路入H01P；线路连接器、汇流器入H01R；受激发射器件入H01S；机电谐振器入H03H；扬声器、送话器、留声机拾音器或类似的声机电传感器入H04R；一般电光源入H05B；印刷电路、混合电路、电设备的外壳或结构零部件、电气元件的组件的制造入H05K；在具有特殊应用的电路中使用的半导体器件见应用相关的小类）
H01L21/00	专门适用于制造或处理半导体或固体器件或其部件的方法或设备
H01L21/70	.由在一共用基片内或其上形成的多个固态组件或集成电路组成的器件或其部件的制造或处理；集成电路器件或其特殊部件的制造（由预制电组件组成的组装件的制造入H05K3/00，H05K13/00）
H01L21/77	..在公共衬底中或上面形成的由许多固态元件或集成电路组成的器件的制造或处理（电可编程只读存储器或其多步骤的制造方法入H01L27/115）
H01L21/78	...把衬底连续地分成多个独立的器件（改变表面物理特性或者半导体形状的切割入H01L21/304）
H01L21/82	....制造器件，例如每一个由许多元件组成的集成电路
H01L21/822	.....衬底是采用硅工艺的半导体的（H01L21/8258优先）
H01L21/8232	......场效应工艺
H01L21/8234	.......MIS工艺
H01L21/8238	........互补场效应晶体管，例如CMOS