27452
Our transport measurements indicate that the electron mobility mu =~ 60 cm ( 2 ) V ( - 1 ) s ( - 1 ) at 250 K in IL - gated devices exceeds significantly that of comparable back - gated devices .
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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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