20631
The best OFET mobility is recorded for 9L CdA substrate and reaches 6 . 7 x 10 ( - 2 ) cm ( 2 ) V ( - 1 ) s ( - 1 ) , presumably limited by the roughness of the interface between CdA and rubrene films .
 Chemical: CdA; Chemical: CdA; Chemical: rubrene
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: CdA; Chemical: CdA; Chemical: rubrene