26347
Under the illumination of He - Cd laser ( 325 nm ) with the photon energy larger than the band gap of SnO2 nanowire , remarkably , an ultrahigh photocurrent gain up to 2 . 5 x 10 ( 5 ) has been achieved , and an enhancement factor can reach up to 700 % ( cf . bare SnO2 NW ) as light illumination onto the wire with an excitation intensity of 15 W / m ( 2 ) .
 Chemical: He; Chemical: Cd; Chemical: SnO2; Chemical: SnO2
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: He, Cd, SnO2, SnO2 
Answer:
 Chemical: He; Chemical: Cd; Chemical: SnO2; Chemical: SnO2