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새로운 n형 고분자인 DFPP 기반의 MEH-PPV/DFPP Blend 소자의 광전특성
김수현,문지선,이재우,이석,김선호,변영태,김동영,이창진,김유진,정영철,이긍원,Kim, Su-Hyun,Moon, Ji-Sun,Lee, Jae-Woo,Lee, Seok,Kim, Sun-Ho,Byun, Young-Tae,Kim, Dong-Young,Lee, Chang-Jin,Kim, Eu-Gene,Chung, Young-Chul,Rie, Kung-Won 한국광학회 2006 한국광학회지 Vol.17 No.5
Optical characteristics in polymer films of MEH-PPV/DFPP blends were for the first time investigated. DFPP (N, N'-diperfluorophenyl-3,4,9,10-perylenetetracarboxylic diimide) used here was a novel n-type polymer, which had good stability in air and solubility in common solvents. For a 1:9 DFPP:MEH-PPV blend, highly efficient quenching of photoluminescence (PL) was observed. In addition, the photocurrent responses of these MEH-PPV/DFPP photovoltaic cells were measured. When the light intensity was $50mW/cm^2$, short-circuit photocurrent densities were two times higher than those of single layer MEH-PPV devices. MEH-PPV/DFPP 혼합물의 고분자 박막에서 광학적 특성들이 최초로 조사되었다. 여기서 사용된 BFPP(N, N'-diperfluorophenyl-3,4,9,10-perylenetetracarboxylic diimide)는 새로운 n형 고분자인데 공기 중에서 안정성이 우수하고 일반 용매에서 잘 용해되었다. 1:19 DFPP:MEH-PPV 혼합물의 경우 매우 효율적인 형광소멸이 관측되었다. 더불어 이 MEH-PPV/DFPP 광전 셀의 광전류 응답특성들이 측정되었다. 빛의 세기가 $50mW/cm^2$일 때 단락전류 밀도는 단일 층의 MEH-PPV 소자들보다 2배 이상 되었다.
메모리 친수성 아크릴릭 인공수정체의 백내장 수술 2년후 임상결과
김유리,서성욱,정인영,송준경,Eu Rie Kim,Seong Wook Seo,In Young Chung,Jun Kyong Song 대한안과학회 2007 대한안과학회지 Vol.48 No.3
Purpose: To evaluate the clinical results of thermoplastic, hydrophilic acrylic IOL CV232 (MemoryLens?, CIVA Vision, USA) to those of hydrophobic acrylic IOL AR40e (Sensar?, AMO, USA). Methods: Twenty patients had in-the-bag implantation of a MemoryLens? IOL in 1 eye and a Sensar? in the opposite eye in a randomized fashion after uneventful phacoemulsification. We evaluated the best corrected visual acuity (BCVA) and posterior capsule opacification (PCO) at a mean 30.05 months after surgery. Results: Two years postoperatively, a BCVA of 0.8 or better was found in 65% of the MemoryLens? group and in 60% of the Sensar? group. There was no statistically significant differences between the two groups (p>0.50). PCO developed in 55% in the MemoryLens? group and in 65% of the Sensar? group. Again, no statistically significant differences were found between the two groups (p>0.50). Conclusions: There were no significant differences between the two different intraocular lenses in BCVA or PCO postoperatively.