25761
In this contribution , high - performance vertical organic transistors comprising pentacene for p - type operation and C60 for n - type operation are presented .
 Chemical: pentacene; Chemical: C60
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: pentacene; Chemical: C60