发明授权
US07238565B2 Methodology for recovery of hot carrier induced degradation in bipolar devices
有权
在双极器件中回收热载体诱导的降解的方法
- 专利标题: Methodology for recovery of hot carrier induced degradation in bipolar devices
- 专利标题(中): 在双极器件中回收热载体诱导的降解的方法
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申请号: US10904985申请日: 2004-12-08
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公开(公告)号: US07238565B2公开(公告)日: 2007-07-03
- 发明人: Fernando Guarin , J. Edwin Hostetter, Jr. , Stewart E. Rauch, III , Ping-Chuan Wang , Zhijian J. Yang
- 申请人: Fernando Guarin , J. Edwin Hostetter, Jr. , Stewart E. Rauch, III , Ping-Chuan Wang , Zhijian J. Yang
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: Scully, Scott, Murphy & Presser, P.C.
- 代理商 Joseph P. Abate, Esq.
- 主分类号: H01L21/8249
- IPC分类号: H01L21/8249
摘要:
A method for recovery of degradation caused by avalanche hot carriers is provided that includes subjecting an idle bipolar transistor exhibiting avalanche degradation to a thermal anneal step which increases temperature of the transistor thereby recovering the avalanche degradation of the bipolar transistor. In one embodiment, the annealing source is a self-heating structure that is a Si-containing resistor that is located side by side with an emitter of the bipolar transistor. During the recovering step, the bipolar transistor including the self-heating structure is placed in the idle mode (i.e., without bias) and a current from a separate circuit is flown through the self-heating structure. In another embodiment of the present, the annealing step is a result of providing a high forward current (around the peak fT current or greater) to the bipolar transistor while operating below the avalanche condition (V″CB of less than 1 V). Under the above conditions, about 40% or greater of the degradation can be recovered. In yet another embodiment of the present invention, the thermal annealing step may include a rapid thermal anneal (RTA), a furnace anneal, a laser anneal or a spike anneal.
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