m******y
发帖数: 2207 | 1 My understanding:
Absorption is directly related to the band gap (for oxides or semiconductors
), photons with energy less than the band gap won't be absorbed and thus
transmits through the material.
My question:
Sapphire single crystal substrate being heated to 100C. I don't see any
emissions using an IR camera with a detection range of 0.248 eV to 1.24 eV.
Why it doesn't emits lights within that range?
Thank you. |
a*******r
发帖数: 7558 | 2 有没有相关文献 讲sapphire ir emission之类的？
My understanding:
Absorption is directly related to the band gap (for oxides or semiconductors
), photons with energy less than the band gap won't be absorbed and thus
transmits through the material.
My question:
Sapphire single crystal substrate being heated to 100C. I don't see any
emissions using an IR camera with a detection range of 0.248 eV to 1.24 eV.
Why it doesn't emits lights within that range?
Thank you.
【在 m******y 的大作中提到】
: My understanding:
: Absorption is directly related to the band gap (for oxides or semiconductors
: ), photons with energy less than the band gap won't be absorbed and thus
: transmits through the material.
: My question:
: Sapphire single crystal substrate being heated to 100C. I don't see any
: emissions using an IR camera with a detection range of 0.248 eV to 1.24 eV.
: Why it doesn't emits lights within that range?
: Thank you.
|
m******y
发帖数: 2207 | 3 not sure.
I thought this is something that should be able to calculate or predict
based on known optics knowledge. Maybe not that simple?
semiconductors
.
【在 a*******r 的大作中提到】
: 有没有相关文献 讲sapphire ir emission之类的？
:
: My understanding:
: Absorption is directly related to the band gap (for oxides or semiconductors
: ), photons with energy less than the band gap won't be absorbed and thus
: transmits through the material.
: My question:
: Sapphire single crystal substrate being heated to 100C. I don't see any
: emissions using an IR camera with a detection range of 0.248 eV to 1.24 eV.
: Why it doesn't emits lights within that range?
|
