Facing Subjects
-OLED is weak to humidity and oxygen.
-And only 20% of whole energy is used to emit the light.
-Short lifetime
-Complex processing (price problem)
-Problem of efficiency
-Difficult to scale for large screen sizes
conclusion
OLED stands for Organic Light Emitting Diode
Low power consumption, ultra slim, formation of exciton by electron and hole recom
face states'. When the fixed charge exists in oxide layer, it causes entire curve of graph to shift to the [Figure 12] C-V graph shift by direction of bias
side. These charges are generated by ions came in the process of deposition of oxide layer. When the charges exist in between the substrate and interface, the value of Vfb and C-V curve will shift by amount of the charge divided by Cox of Ci
4.Enzyme electrode의 발전상황
1.글루코오스 센서
클라크(Clark)와 리온즈(Lyons)에 의해 처음으로 효소 전극의 원리가 제안되었다. 그들은 혈액 중의 포도당을 측정하기 위하여 글루코오스 센서의 원형을 제안하였다. 투석막 사이에 효소를 함유시켜 , 이 투석막을 혈액과 접촉시키면, 함유된 효소가 포도
< 압연 >
- 이론
금속재료를 회전하는 roll(roller) 사이에 넣어 가압함으로써 두께 또는 단면적을 감소시키고 길이방향으로 늘리는 가공을 압연(rolling)이라 한다. 작업온도에 따라 열간압연(hot rolling)과 냉간압연(cold rolling)이 있으며, 열간압연에서는 가공물의 소성이 크므로 압연동력이 적게 소비되고
thick boot a clump of crocuses in the grass. Colin looked down at them.
"Aye," he said slowly, "there couldna' be bigger Magic than that there--there couldna' be."
"Because it doesn't make me angry any more to see her laughing. I wakened when it was bright moonlight two nights ago and felt as if the Magic was filling the room and making everything so splendid that I couldn't lie still. I got