29206
We were able to achieve the direct observation of the interfacial band alignments at the donor ( P3HT ) - acceptor ( PCBM ) interfaces and at the interfaces between the photoactive P3HT : PCBM blends and the poly ( 3 , 4 - ethylenedioxythiophene ) poly ( styrenesulfonate ) ( PEDOT : PSS ) anode modification layer with an atomic - scale spatial resolution .
 Chemical: P3HT; Chemical: PCBM; Chemical: P3HT; Chemical: PCBM; Chemical: poly ( 3 , 4 - ethylenedioxythiophene ); Chemical: poly ( styrenesulfonate ); Chemical: PEDOT; Chemical: PSS
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: P3HT; Chemical: PCBM; Chemical: P3HT; Chemical: PCBM; Chemical: poly ( 3 , 4 - ethylenedioxythiophene ); Chemical: poly ( styrenesulfonate ); Chemical: PEDOT; Chemical: PSS