29634
The addition of Au / SiO2 core / shell nanospheres to the P3HT : PC60BM - polymer resulted in a 2 . 7 % improvement in PCE , while their addition to a PBDTT - DPP : PC60BM polymer resulted in a 9 . 1 % improvement .
 Chemical: Au; Chemical: SiO2; Chemical: P3HT; Chemical: PC60BM; Chemical: PBDTT - DPP; Chemical: PC60BM
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: Au, SiO2, P3HT, PC60BM, PBDTT - DPP, PC60BM 
Answer:
 Chemical: Au; Chemical: SiO2; Chemical: P3HT; Chemical: PC60BM; Chemical: PBDTT - DPP; Chemical: PC60BM