silvaco中如何修改能明显改善深紫外的光电性能(程序)
王与冠 2019-05-16 11:18:59 # (c) Silvaco Inc., 2015
go atlas
set Al_b=0.6
set Al_w=0.5
set Al_np = 0.65
set Al_EBL=0.75
set Al_In=0.87
set width_w=0.003
set width_b=0.008
set width_In=0.002
set width_MQW=$width_w*5+$width_b*6+$width_In*12
set width_EBL=0.02
set width_p_u=0.1
set width_p_l=0.03
mesh width=1.13e4
#
x.mesh loc=0.0 spac=0.5
x.mesh loc=1.0 spac=0.5
# set width_p-GaN=0.1
y.mesh loc=0.0 spac=0.05
y.mesh loc=0.1 spac=0.001
# set width_p-AlGaN
y.mesh loc=0.1+$width_p_u spac=0.0001
y.mesh loc=0.1+$width_p_u+$width_EBL spac=0.0001
y.mesh loc=0.1+$width_p_u+$width_EBL+$width_p_l spac=0.0001
# set width_MQW
y.mesh loc=0.1+$width_p_u+$width_EBL+$width_p_l+$width_MQW spac=0.0001
#set n-AlGaN_width=2
y.mesh loc=2.1+$width_p_u+$width_EBL+$width_p_l+$width_MQW spac=0.01
# p-GaN
region number=1 y.min=0 y.max=0.1 material=GaN
# p-AlGaN
region number=2 y.min=0.1 y.max=0.1+$width_p_u material=AlGaN x.comp=$Al_np name=npregion
region number=3 y.min=0.1+$width_p_u y.max=0.1+$width_p_u+$width_EBL material=AlGaN x.comp=$Al_EBL
region number=4 y.min=0.1+$width_p_u+$width_EBL y.max=0.1+$width_p_u+$width_EBL+$width_p_l material=AlGaN x.comp=$Al_np name=npregion
# MQW
region number=5 y.min=0.1+$width_p_u+$width_EBL+$width_p_l y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*1+$width_b material=AlGaN x.comp=$Al_b name=barrier
region number=6 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*1+$width_b y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*2+$width_b material=InAlN x.comp=$Al_In name=barrier_In
region number=7 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*2+$width_b y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*2+$width_b+$width_w material=AlGaN x.comp=$Al_w name=well led qwell
region number=8 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*2+$width_b+$width_w y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*3+$width_b+$width_w material=InAlN x.comp=$Al_In name=barrier_In
region number=9 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*3+$width_b+$width_w y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*3+$width_b*2+$width_w material=AlGaN x.comp=$Al_b name=barrier
region number=10 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*3+$width_b*2+$width_w y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*4+$width_b*2+$width_w material=InAlN x.comp=$Al_In name=barrier_In
region number=11 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*4+$width_b*2+$width_w y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*4+$width_b*2+$width_w*2 material=AlGaN x.comp=$Al_w name=well led qwell
region number=12 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*4+$width_b*2+$width_w*2 y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*5+$width_b*2+$width_w*2 material=InAlN x.comp=$Al_In name=barrier_In
region number=13 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*5+$width_b*2+$width_w*2 y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*5+$width_b*3+$width_w*2 material=AlGaN x.comp=$Al_b name=barrier
region number=14 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*5+$width_b*3+$width_w*2 y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*6+$width_b*3+$width_w*2 material=InAlN x.comp=$Al_In name=barrier_In
region number=15 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*6+$width_b*3+$width_w*2 y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*6+$width_b*3+$width_w*3 material=AlGaN x.comp=$Al_w name=well led qwell
region number=16 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*6+$width_b*3+$width_w*3 y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*7+$width_b*3+$width_w*3 material=InAlN x.comp=$Al_In name=barrier_In
region number=17 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*7+$width_b*3+$width_w*3 y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*7+$width_b*4+$width_w*3 material=AlGaN x.comp=$Al_b name=barrier
region number=18 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*7+$width_b*4+$width_w*3 y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*8+$width_b*4+$width_w*3 material=InAlN x.comp=$Al_In name=barrier_In
region number=19 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*8+$width_b*4+$width_w*3 y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*8+$width_b*4+$width_w*4 material=AlGaN x.comp=$Al_w name=well led qwell
region number=20 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*8+$width_b*4+$width_w*4 y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*9+$width_b*4+$width_w*4 material=InAlN x.comp=$Al_In name=barrier_In
region number=21 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*9+$width_b*4+$width_w*4 y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*9+$width_b*5+$width_w*4 material=AlGaN x.comp=$Al_b name=barrier
region number=22 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*9+$width_b*5+$width_w*4 y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*10+$width_b*5+$width_w*4 material=InAlN x.comp=$Al_In name=barrier_In
region number=23 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*10+$width_b*5+$width_w*4 y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*10+$width_b*5+$width_w*5 material=AlGaN x.comp=$Al_w name=well led qwell
region number=24 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*10+$width_b*5+$width_w*5 y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*11+$width_b*5+$width_w*5 material=InAlN x.comp=$Al_In name=barrier_In
region number=25 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*11+$width_b*5+$width_w*5 y.max=0.1+$width_p_u+$width_EBL+$width_p_l+$width_In*12+$width_b*6+$width_w*5 material=AlGaN x.comp=$Al_b name=barrier
# set width_n-AlGaN=2
region number=26 y.min=0.1+$width_p_u+$width_EBL+$width_p_l+$width_MQW y.max=2.1+$width_p_u+$width_EBL+$width_p_l+$width_MQW material=AlGaN x.comp=$Al_np name=npregion substrate
#
electrode name=anode top
electrode name=cathode bottom
#
doping region=1 uniform p.type conc=4e19
doping region=2 uniform p.type conc=8e19
doping region=3 uniform p.type conc=8e19
doping region=4 uniform p.type conc=8e19
# doping 5~25 intrinsic
doping region=26 uniform n.type conc=5e18
#
models polarization calc.strain polar.scale=-0.8
material material=GaN taun0=1e-8 taup0=1e-8 copt=1.1e-8 \
augn=1.0e-31 augp=1.0e-31
material material=AlGaN taun0=1e-8 taup0=1e-8 copt=1.1e-8 \
augn=1.0e-31 augp=1.0e-31
material material=InAlN taun0=1e-8 taup0=1e-8 copt=1.1e-8 \
augn=1.0e-31 augp=1.0e-31
material material=InAlGaN taun0=1e-8 taup0=1e-8 copt=1.1e-8 \
augn=1.0e-31 augp=1.0e-31
#
material well.gamma0=30e-3
#
material material=GaN edb=0.013 eab=0.17
material name=npregion edb=0.013 eab=$Al_np*0.35+(1-$Al_np)*0.17
material region=3 edb=0.013 eab=$Al_EBL*0.35+(1-$Al_EBL)*0.17
material name=barrier edb=0.013 eab=$Al_b*0.35+(1-$Al_b)*0.17
material name=barrier_In edb=0.013 eab=$Al_In*0.35+(1-$Al_In)*0.17
#
models k.p fermi incomplete consrh auger optr print
models name=well k.p chuang spontaneous lorentz
#
mobility material=GaN mun0=350 mup0=15
mobility material=AlGaN mun0=250 mup0=5
mobility material=InAlN mun0=300 mup0=10
#
output con.band val.band band.param charge polar.charge e.mobility h.mobility \
u.srh u.radiative u.auger permi
#
solve init
#
tonyplot
#
method climit=1e-4 maxtrap=500
#block nblockit=50
#
solve prev
#
save outf=ledex02_1.str
#
probe name="Radiative" integrate radiative rname=well
probe name="Recombination" integrate recombination
#
log outf=ledex02.log
solve vstep=0.5 vfinal=5.5 name=anode
save outf=ledex02_5p64.str
save spectrum=ledex02_5p64.spc lmin=0.255 lmax=0.450 nsamp=200
solve vstep=0.5 vfinal=6.0 name=anode
save outf=ledex02_6p0.str
以上程序可以运行就是出来的输出功率,功率谱密度的曲线数据不行(光电性能不行),改哪些变量可以提升,我需要出现明显提升效果,我自己调的的只有很小的提升尽量不改动结构。