4 research outputs found

    ๋ฌด์„  ๋„คํŠธ์›Œํฌ์—์„œ์˜ ์ข…๋ฃŒ์‹œํ•œ ๋ณด์ƒ์„ ์‚ฌ์šฉํ•œ ๊ณต์ • ํ์ž‰ ๊ธฐ๋ฒ•

    No full text
    ํ•™์œ„๋…ผ๋ฌธ(์„์‚ฌ)--์„œ์šธ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› :์ „๊ธฐ.์ปดํ“จํ„ฐ๊ณตํ•™๋ถ€,2001.Maste

    Studies on Optoelectronic Applications of Bay-Substituted Chiral Perylene Diimides

    No full text
    Master๋ณธ ์ €์ž๋Š” ์„์‚ฌ ๊ณผ์ • ๋™์•ˆ ๋ฒ ์ด ์œ„์น˜๊ฐ€ ์น˜ํ™˜๋œ ํŽ˜๋ฆด๋ Œ ๋‹ค์ด์ด๋ฏธ๋“œ ๊ธฐ๋ฐ˜ ๊ด‘ ์ „์ž ์†Œ์ž์˜ ์‘์šฉ์— ๊ด€ํ•œ ์—ฐ๊ตฌ๋ฅผ ์ง„ํ–‰ํ•˜์˜€๋‹ค. ์ œ 1 ์žฅ์—์„œ๋Š” ํ‚ค๋ž„์„ฑ ๊ด‘ ์ „์ž ์†Œ์ž์— ๋Œ€ํ•ด ๊ฐ„๋‹จํžˆ ์†Œ๊ฐœํ•˜์˜€๊ณ , ์ „๋„์œ ๋งํ•œ n-ํ˜• ๋ฐ˜๋„์ฒด ๋ฌผ์งˆ์ธ ํŽ˜๋ฆด๋ Œ ๋‹ค์ด์ด๋ฏธ๋“œ์˜ ๋ฒ ์ด ์œ„์น˜ ์น˜ํ™˜์˜ ์˜ํ–ฅ์— ๋Œ€ํ•˜์—ฌ ์†Œ๊ฐœํ•˜์˜€๋‹ค. ์ œ 2 ์žฅ์—์„œ๋Š” ๋ฒ ์ด ์œ„์น˜์— ์—ผ์†Œ ๋ถ„์ž๊ฐ€ ์น˜ํ™˜๋œ ์‹ ๊ทœ ํ‚ค๋ž„์„ฑ ํŽ˜๋ฆด๋ Œ ๋‹ค์ด์ด์ด๋ฏธ๋“œ ์œ ๋„์ฒด๋“ค์˜ ์ž๊ฐ€ ์กฐ๋ฆฝ์„ ์œ ๋„ํ•˜์—ฌ ๋‹จ ๊ฒฐ์ • ๋ฐ ๋‚˜๋…ธ ์™€์ด์–ด๋ฅผ ํ˜•์„ฑํ•˜์˜€๋‹ค. ์ด๋Ÿฌํ•œ ์ž๊ฐ€ ์กฐ๋ฆฝ์— ์˜ํ•ด ํ˜•์„ฑ๋œ ๋‹จ ๊ฒฐ์ • ๋ฐ ๋‚˜๋…ธ์™€์ด์–ด๋“ค์€ ๊ฒฐ์ •๋ฆฝ๊ณ„๊ฐ€ ์กด์žฌํ•˜์ง€ ์•Š๋Š” ๋‹จ ๊ฒฐ์ •์˜ ๊ตฌ์กฐ์  ํŠน์„ฑ์œผ๋กœ ์ธํ•˜์—ฌ ๊ด‘ ์ „์ž ์†Œ์ž์—์„œ ์„ฑ๋Šฅ์ด ๋น„์•ฝ์ ์œผ๋กœ ํ–ฅ์ƒ๋˜๋Š” ๊ฒƒ์„ ํ™•์ธํ•  ์ˆ˜ ์žˆ์—ˆ๋‹ค. ์ด๋ฐ–์—๋„, ์ž๊ฐ€ ์กฐ๋ฆฝ ๊ณผ์ •์„ ํ†ตํ•ด ๋ถ„์ž์˜ ํ‚ค๋ž„์„ฑ์ด ์ดˆ๋ถ„์ž์  ํ‚ค๋ž„์„ฑ์œผ๋กœ ์ „์ด ๋ฐ ์ฆํญ๋˜๋Š” ๊ฒƒ์„ ํ™•์ธํ•˜์˜€๋‹ค. ์ด๋Ÿฌํ•œ ๋‹จ ๊ฒฐ์ • ๋ฐ ๋‚˜๋…ธ์™€์ด์–ด๋ฅผ ๊ธฐ๋ฐ˜์œผ๋กœ ์œ ๊ธฐ ์ „๊ณ„ ํšจ๊ณผ ํŠธ๋žœ์ง€์Šคํ„ฐ ๊ธฐ๋ฐ˜ ๊ด‘ ๊ฐ์ง€๊ธฐ๋ฅผ ์ œ์ž‘ํ•˜์˜€๊ณ , ๊ฐ„๋‹จํ•œ ๊ธฐ์ƒ ๋„ํ•‘ ๋ฐฉ์‹์„ ํ†ตํ•ด ๊ด‘ ๊ฐ์ง€๊ธฐ์˜ ๊ด‘ ๊ฐ์ง€ ๋Šฅ๋ ฅ์ด ํฌ๊ฒŒ ํ–ฅ์ƒ๋˜๋Š” ๊ฒƒ์„ ํ™•์ธํ•˜์˜€๋‹ค. ์ œ 3 ์žฅ์—์„œ๋Š” ๋ฒ ์ด ์œ„์น˜์— ์‚ฌ์ด์•„๋…ธ๊ธฐ๊ฐ€ ์น˜ํ™˜๋œ ์‹ ๊ทœ ํ‚ค๋ž„์„ฑ ํŽ˜๋ฆด๋ Œ ์œ ๋„์ฒด๋ฅผ ์ด์šฉํ•œ ์—ฐ๊ตฌ๋ฅผ ์ง„ํ–‰ํ•˜์˜€๋‹ค. ์ด ๋ฌผ์งˆ์˜ ๊ฒฝ์šฐ ๋†’์€ ์ „๊ธฐ ์Œ์„ฑ๋„๋ฅผ ๊ฐ–๋Š” ์‚ฌ์ด์•„๋…ธ๊ธฐ๋กœ ์ธํ•˜์—ฌ ๋ฌผ์งˆ์˜ LUMO ์ค€์œ„๊ฐ€ ๋‚ฎ์•„์ ธ ๊ณต๊ธฐ์ค‘์—์„œ ์•ˆ์ •ํ•œ ํŠน์„ฑ์„ ๋ณด์˜€๋‹ค. ๋˜ํ•œ ์œ„์˜ ๋ฌผ์งˆ๊ณผ ์ ˆ์—ฐ์ฒด ๊ณ ๋ถ„์ž์ธ PLA์™€์˜ ํ˜ผํ•ฉ์„ ํ†ตํ•ด ์ „ํ•˜ ํŠธ๋žฉ ํšจ๊ณผ๋ฅผ ์œ ๋„ํ•˜์—ฌ ๊ด‘ ๊ฐ์ง€ ๋Šฅ๋ ฅ์ด ํ–ฅ์ƒ๋œ ์œ ๊ธฐ๋ฌผ ๊ธฐ๋ฐ˜ ๊ด‘ ๊ฐ์ง€๊ธฐ๋ฅผ ์ œ์ž‘ํ•˜์˜€๊ณ , ํ˜ผํ•ฉ ๋น„์œจ์— ๋”ฐ๋ฅธ ๊ด‘ ๊ฐ์ง€๊ธฐ์˜ ์„ฑ๋Šฅ ๋ณ€ํ™”๋ฅผ ์กฐ์‚ฌํ•˜์˜€๋‹ค. ์ด์— ๋”ํ•˜์—ฌ ๋ฌผ์งˆ์˜ ํ‚ค๋ž„์„ฑ์— ์˜ํ•ด ์†Œ์ž์˜ ์„ฑ๋Šฅ์— ์ฐจ์ด๊ฐ€ ์žˆ๋Š” ๊ฒƒ์„ ํ™•์ธํ•˜์˜€๊ณ , ์ด์˜ ์›์ธ์„ ๋ถ„์„ํ•˜์˜€๋‹ค. ๋ณธ ์—ฐ๊ตฌ๋Š” ์ฐจ์„ธ๋Œ€ ๋ฏธ๋ž˜๊ธฐ์ˆ ๋กœ์„œ ์ด์šฉ๋  ์œ ๊ธฐ ๊ด‘ ํŠธ๋žœ์ง€์Šคํ„ฐ์˜ ์„ฑ๋Šฅ์„ ๋น„์•ฝ์ ์œผ๋กœ ํ–ฅ์ƒ์‹œํ‚ฌ ์—ฌ๋Ÿฌ ๋ฐฉ๋ฒ•๋“ค์„ ์ œ์‹œํ•˜์˜€๊ณ , ์ด์— ๋”๋ถˆ์–ด ํ‚ค๋ž„์„ฑ์ด ์†Œ์ž์— ๋ฏธ์น˜๋Š” ์˜ํ–ฅ์— ๊ด€ํ•˜์—ฌ ๋ถ„์„ํ•˜์˜€๋‹ค. ์ด๋Š” ๋ฏธ๋ž˜ ์ค‘์š” ๊ธฐ์ˆ ์ธ ์œ ๊ธฐ ๊ด‘ ์ „์ž ์†Œ์ž์˜ ๋‹ค์Œ ์„ธ๋Œ€๋กœ์˜ ๋ฐœ์ „์— ๊ธฐ์—ฌ ํ•  ์ˆ˜ ์žˆ์„ ๊ฒƒ์œผ๋กœ ์‚ฌ๋ฃŒ๋œ๋‹ค.Organic electronics are promising area for the transition to soft electronics, but still suffered from immature n-type semiconductors. In addition, studies about the effect of chirality on electronics are still in its infancy. Therefore, during my degree curriculum, I have studied about bay-substituted chiral perylene diimides (PDIs) and their optoelectronic applications. In the second chapter, bay-tetrachlorinated chiral PDIs were synthesized and self-assembled to single crystals and nanowires. Through self-assembly, not only their optoelectronic properties enhanced due to perfection in structure but also molecular chirality become successfully transferred and amplified to supramolecular chirality. In addition, by simple gas doping process, sharply increased light detection properties was observed. Their doping mechanisms were studied through simulation process. In the third chapter, core-cyanated chiral PDIs were synthesized. Designed to have low LUMO levels, CPDI-CN-C6 based OPTs can endure over 1000 h in ambient condition. A strategy of increasing proto parameters by inducing the charge trapping effect through blending with insulating polymer was adopted. After blended with PLA, CPDI-CN-C6 based OPTs showed enhanced performances and processability. In addition, effects of chirality on OPTs by comparing enantiopure CPDI-CN-C6 and racemic CPDI-CN-C6 were investigated. Therefore, these studies aid the further understandings of utilize chirality to optoelectronics and propose the effective ways to improve organic based phototransistors
    corecore