17974
We discuss the benefits of using various plasmonic nanostructures for broad - band , polarization - insensitive and angle - independent absorption enhancement , and their integration with one or two electrode ( s ) of an OPV device .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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