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