Progress in Thin Film Solar Cells Based on <svg     style="vertical-align:-4.32007pt;width:103px;" id="M1" height="20.637501" version="1.1" viewBox="0 0 103 20.637501" width="103"  xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg">
	
		
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<table>SEM pictures of precursor and CZTS films with different stacking order of metal layers (taken from [<a href="/journals/ijp/2011/801292/#B30">30</a>]).</table>

International Journal of Photoenergy

fig5

Figure 5

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