Effect of Silicon Crystal Size on Photoluminescence Appearance in Porous Silicon

<table>Raman spectra of bulk Si and PS samples a, b, and c. <svg height="14.2375" id="M15" style="vertical-align:-3.13504pt" version="1.1" viewbox="0 0 21.237499 14.2375" width="21.237499" xmlns="http://www.w3.org/2000/svg">
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<g transform="translate(72,-60.61)">
<text transform="matrix(1,0,0,-1,-71.95,63.79)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝐷</tspan>
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<text transform="matrix(1,0,0,-1,-62.07,60.66)">
<tspan style="font-size: 8.75px; " x="0" y="0">𝑃</tspan>
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</svg> is pore diameter and <svg height="10.325" id="M16" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 11.1875 10.325" width="11.1875" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.325)">
<g transform="translate(72,-63.74)">
<text transform="matrix(1,0,0,-1,-71.95,63.79)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝐿</tspan>
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</svg> is the crystallites size of Si among the pores.</table>

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fig1

Figure 1

Figure 1: Effect of Silicon Crystal Size on Photoluminescence Appearance in Porous Silicon 