Alloy broadening

<p>Alloy broadening is a mechanism by which the <a href="/facts/Spectral_lines/HuI4Bj5f">spectral lines</a> of an alloy are broadened by the random distribution of atoms within the alloy. It is one of a number of <a href="/facts/Spectral_line/HuI4Bj5f">spectral line broadening mechanisms</a>.
</p><p>Alloy broadening occurs because the random distribution of <a href="/facts/Atom/FoQ4kGN5">atoms</a> in an alloy causes a different material composition at different positions. In <a href="/facts/Semiconductor/zFf3mGTE">semiconductors</a> and insulators the different material composition leads to different <a href="/facts/Band_gap_energy/IjIeh95l">band gap energies</a>. This gives different <a href="/facts/Exciton/aFIBtIqQ">exciton</a> recombination energies. Therefore, depending on the position where an exciton recombines the emitted light has a different energy. The alloy broadening is an <a href="/facts/Inhomogeneous_broadening/wfCz6mKq">inhomogeneous line broadening</a>, meaning that its shape is Gaussian.
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Alloy broadening open-in-new

Alloy broadening