8472
Electrophoresis of randomly and vertically embedded graphene nanosheets in activated carbon film as a counter electrode for dye - sensitized solar cells .
 Chemical: graphene; Chemical: carbon
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: graphene; Chemical: carbon