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Kevin Anderson

What is the effective mass of electron and hole of InGaN?

Andrew T  Follow

Dear Mr. Chettri, please read the following article
https://journals.le.ac.uk/ojs1/index.php/pst/article/viewFile/2331/2235

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Atheism Now  Follow

We have measured experimentally the electron effective mass in InGaN with In of 33%, see Article Electron effective mass in unintentionally doped In0.33Ga0.6...
. We also provide information on the effect of composition and carrier concentration.

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Mbanginu Aurelie Kfe  Follow

Dear Dhanu Chettri,

I suspect you are looking into wurtzite GaN. In this case, what the colleagues recommended is not fully state-of-the-art. For GaN, we did measure effective electron masses: Article Anisotropy of effective electron masses in highly doped nonpolar GaN

For InGaN, you will have to interpolate towards smaller values however, for small In mole fractions (approx. <20%) the effective mass of pure GaN does work well as an approximation.
Article Electron effective mass in unintentionally doped In0.33Ga0.6...

Electron masses are not dependent on well thickness but weakly on strain: Article Effects of strain on the electron effective mass in GaN and AlN

Hole masses are a completely different story. They should be described by Luttinger-like parameters and are again not dependent on well thickness but the derived masses are very sensitive to strain and strongly anisotropic. Those Luttinger-like or valence band parameters are not easily available experimentally, you'll have to use theoretical values.
However, for an estimate of quantization energies (particle-in-a-box-problem), you can start by using hole masses explicitly given for GaN e.g. from here:
Article Influence of exchange and correlation on structural and elec...


Regards,
Martin


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David Farmer  Follow

Dear Dhanu Chettri,

I suspect you are looking into wurtzite GaN. In this case, what the colleagues recommended is not fully state-of-the-art. For GaN, we did measure effective electron masses: Article Anisotropy of effective electron masses in highly doped nonpolar GaN

For InGaN, you will have to interpolate towards smaller values however, for small In mole fractions (approx. <20%) the effective mass of pure GaN does work well as an approximation.
Article Electron effective mass in unintentionally doped In0.33Ga0.6...

Electron masses are not dependent on well thickness but weakly on strain: Article Effects of strain on the electron effective mass in GaN and AlN

Hole masses are a completely different story. They should be described by Luttinger-like parameters and are again not dependent on well thickness but the derived masses are very sensitive to strain and strongly anisotropic. Those Luttinger-like or valence band parameters are not easily available experimentally, you'll have to use theoretical values.
However, for an estimate of quantization energies (particle-in-a-box-problem), you can start by using hole masses explicitly given for GaN e.g. from here:
Article Influence of exchange and correlation on structural and elec...


Regards,
Martin


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Blair Blakely  Follow

Dear Chettri,
The effective mass of electron and hole of InxGa1-xN depend on the Indium content. The effective masses are calculated through the vegard's law between InN and GaN. See the reference Article Advantages of InGaN/InGaN quantum well light emitting diodes...

in Table 1


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Blaine Childress  Follow
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Adam Jacholkowski  Follow
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