| 학회 | 한국재료학회 |
| 학술대회 | 2012년 봄 (05/17 ~ 05/18, 무주덕유산리조트) |
| 권호 | 18권 1호 |
| 발표분야 | A. 전자/반도체 재료(Electronic and Semiconductor Materials) |
| 제목 | Dependence of the current density and rectifying ratio on the small-molecule Schottky diode. |
| 초록 | Organic device is one of the most candidates in the next generation. For achieving the 4F2 scale, array structure must be needed. In array cell, we needed that the small-molecule organic Schottky diode was important to prevent other current paths as a selection device. At this point, we investigated the small-molecule organic schottky diode. Organic schottky diode has an advantage of using same organic material with small-molecule organic memory and facilitating selection only one memory-cell in array structure. Our organic schottky diode was consisted of bottom metal /organic material / Top metal and fabricated by thermal evaporation. Among the various small-molecule organic schottky diodes, Au /Alq3 (Aluminum tris - 8-hydroxyquinoline) / LiF (lithium fluoride) /Al has most rectification ratio of the 2.29 x 106 higher than others. We analyzed that rectification ratio (106 ~ 107) and current density was depended on the current level at operating voltage and pattern size. Concretely, Organic thickness is the thinner, Current level is the higher compared of shrinking pattern size. But, Current level is higher, rectification ratio is smaller. Then, Current level is sensitive organic thickness more than pattern size. Therefore the pattern size and organic thickness are smaller, we would got the high rectification ratio and high current density. As this experimental result, the Au/Alq3/LiF/Al structure is access to high-performance diode. So we will fabricate the small-molecule Schottky diode and stack vertically small-molecular memory in cell-array. Acknowledgment * This work was supported by R&D Program of the Ministry of Knowledge Economy and the Brain Korea 21 Project in 2012. |
| 저자 | Jong-Sun Lee1, Jong Dae Lee2, Hyun Min Seung1, Kyoung-Cheol Kwon2, Dong Hyun Yang1, Myung Jin Song2, Dong Hyun Park1, Jea Gun Park2 |
| 소속 | 1Advanced Semiconductor Material& Device Development Center, 2Hanyang Univ. |
| 키워드 | Organic diode; selection device; current density; Rectification Ratio |
