Let More Light In - Reflection

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INTERPERSONAL : SCIENCES

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'total internal reflection'  ?	tungsten oxide  has a  high refractive  index
?	?

The researcher's cells use iron oxide and tungsten oxide to do the light-capturing. Iron oxide absorbs visible light and tungsten oxide absorbs ultraviolet. Also tungsten oxide has a high refractive index. This means that light finds it hard to escape once it is inside a piece of tungsten oxide because it is bounced back and forth by a phenomenon called total internal reflection, increasing the chance it will be absorbed. p.78.

Source:
Solar Cells: Tiny Balls of Fire, The Economist, June 28th-July 4th 2014, 411: 8893, 78-79.

Additional link:
HowTheLightGetsIn 2015
https://howthelightgetsin.org/hay