| 학회 | 한국재료학회 |
| 학술대회 | 2012년 봄 (05/17 ~ 05/18, 무주덕유산리조트) |
| 권호 | 18권 1호 |
| 발표분야 | A. 전자/반도체 재료(Electronic and Semiconductor Materials) |
| 제목 | Effect of LiF Layer Between a Metal Electrode and an Polymer Layer on Electrical Performance in Polymer Memory-cell |
| 초록 | We investigated the effect of LiF (lithium fluoride) layer between a metal electrode and an polymer layer on electrical performance in polymer memory-cell. The polymer memory-cell was fabricated with a symmetrical structure of a bottom Al / PS (polystyrene) embedded with Au nanocrystals / a top Al. Electrodes were deposited in vacuum chamber by using thermal evaporation and Au nanocrystals embedded in PS layer was formed using a spin-coating process. To obtain electrical performance of polymer memory-cell, we measured the nonvolatile memory characteristics such as a retention-time and endurance cycles of program-read-erase-read sequence. However, endurance cycles had significant fluctuation between Ioff and Ion state after erase and program process. To enhance the electrical performance and interfacial property, we fabricated the polymer memory-cells by inserting the LiF layer between the electrode and the polymer layer. Consequently, it showed a memory margin (Ion/Ioff ratio) of 1.0×103 at Vr (read voltage), maintaining stable retention time of more than 1 × 105 sec and endurance cycles of more than 400. From these experimental results, we suggest the insertion of LiF layer between the Al / PS (embedded with Au nanocrystals), to improve the interfacial property between the electrode and the polymer layer for enhancement of electrical performance in nonvolatile polymer memory-cell. * Acknowledgement This work was supported by R&D Program of the Ministry of Knowledge Economy and the Brain Korea 21 Project in 2012. |
| 저자 | Dong Hyun Yang1, Jong Dae Lee2, Hyun Min Seung1, Kyoung Cheol Kwon2, Jong-Sun Lee1, Myung-Jin Song2, Dong Hyun Park1, Jea-Gun Park2 |
| 소속 | 1Advanced Semiconductor Material & Device Development Center, 2Hanyang Univ. |
| 키워드 | PS(polystyrene); LiF(lithium fluoride); Polymer memory |
