13888
This investigation is supported by the recently reported use of regioregular P3HT / PCBM nanoparticles as charge trapping and storage devices .
 Chemical: P3HT; Chemical: PCBM
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