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