25994
Electrically driven ultraviolet random lasing from an n - MgZnO / i - ZnO / SiO2 / p - Si asymmetric double heterojunction .
 Chemical: MgZnO; Chemical: ZnO; Chemical: SiO2; Chemical: Si
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: MgZnO; Chemical: ZnO; Chemical: SiO2; Chemical: Si