Cross-sectional electron beam-induced current maps show the difference in cadmium telluride solar cells before (pictured above) and after (below) cadmium chloride treatment. The increased brightness after treatment indicates higher current collection at the grain boundaries. Read more at &lt;a href="<a rel="nofollow" class="external free" href="http://www.ornl.gov/ornl/news/news-releases/2014/atomic-switcheroo-explains-origins-of-thin-film-solar-cell-mystery--">http://www.ornl.gov/ornl/news/news-releases/2014/atomic-switcheroo-explains-origins-of-thin-film-solar-cell-mystery--</a>" rel="nofollow"&gt;www.ornl.gov/ornl/news/news-releases/2014/atomic-switcher...&lt;/a&gt;.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/37940997@N05">Oak Ridge National Laboratory</a>
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/oakridgelab/13986734735/">Cadmium telluride solar cell</a>