{HEAD ~ The second electrode} is made of an Mg—Ag layer having a thickness in {TAIL ~ a range} of 170 Å to 200 Å 
{ HEAD ~ The second electrode } is made of an Mg — Ag layer having a thickness in { TAIL ~ a range } of 170 Å to 200 Å
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH