氧化及离子注入工艺模拟实验.doc
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实验
一、实验目的1. 熟悉Silvaco TCAD的仿真模拟环境;
掌握掌握二、实验① 仔细阅读,掌握的使用;
②③ 记录Tonyplot的仿真结果,并进行相关分析。
三、实验内容干氧的氧化膜结构致密、均匀性和重复性好、掩蔽能力强、钝化效果好、但生长速率慢。湿氧的氧化膜结构疏松,表面有缺陷,含水量多,对杂质的掩蔽能力差,但生长速率快。一般湿氧很少单独使用,因为它对硅表面影响较大,湿氧和光刻胶的接触也不好 一般稍微对厚度要求的氧化层两个表面采用干氧,也就是干氧-湿氧-干氧(简称干湿干)的过程
2、离子注入工艺模拟
设计离子注入工艺模拟程序,分析说明离子注入的关键工艺影响参数
参考程序,教程P23 硼离子注入及退火模拟程序及p32程序
硼离子注入程序:
go athena
#TITLE: Simple Boron Anneal
#the x dimension definition
line x loc = 0.0 spacing=0.1
line x loc = 0.1 spacing=0.1
#the vertical definition
line y loc = 0 spacing = 0.02
line y loc = 2.0 spacing = 0.20
#initialize the mesh
init silicon c.phos=1.0e14
#perform uniform boron implant
implant boron dose=1e13 energy=70
#perform diffusion
diffuse time=30 temperature=1000
extract name=“xj” xj silicon mat.occno=1 x.val=0.0 junc.occno=1
#plot the final profile
tonyplot
#save the structure
structure outfile=boron implant.str
quit
退火模拟程序:
IMPLANT
[GAUSS | PEARSON | FULL.LAT | MONTECARLO | BCA] [CRYSTAL | AMORPHOUS]
IMPURITY ENERGY=n DOSE=n [FULL.DOSE]
[TILT=n] [ROTATION=n] [FULLROTATION] [PLUS.ONE] [DAM.FACTOR=n]
[DAM.MOD=c] [PRINT.MOM] [X.DISCR=n] [LAT.RATIO1] [LAT.RATIO2]
[S.OXIDE=n][MATCH.DOSE|RP.SCALE|MAX.SCALE][SCALE.MOM][ANY.PEARSON]
[N.ION=n] [MCSEED=n] [TEMPERATURE=n] [DIVERGENCE=n]
[IONBEAMWIDTH=n] [IMPACT.POINT=n] [SMOOTH=n]
[SAMPLING] [DAMAGE] [MISCUT.TH] [MISCUT.PH] [TRAJ.FILE=n]
[N.TRAJ=n] [Z1=n] [M1=n]
以下为不同角度下的离子注入程序设计:
go athena
# Tilt angle dependence using SVDP model
line x loc = 0.0 spac=0.1
line x loc = 1.0 spac=0.1
line y loc = 0 spac=0.01
line y loc = 0.7 spac=0.01
init
implant boron energy=35 dose=1.e13 tilt=0 rotation=0 print.mom
struct outfile=aniiex02_00.str
line x loc = 0.0 spac=0.1
line x loc = 1.0 spac=0.1
line y loc = 0 spac=0.01
line y loc = 0.7 spac=0.01
init one.d
implant boron energy=35 dose=1.e13 tilt=1 rotation=0 print.mom
struct outfile=aniiex02_01.str
line x loc = 0.0 spac=0.1
line x loc = 1.0 spac=0.1
line y loc = 0 spac=0.01
line y loc = 0.7 spac=0.01
init
implant boron energ
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