logo

korean english

게시판

Home > 게시판 > 세미나

아래와 같이 콜로퀴움을 개최하오니 많이 참석해 주시기 바랍니다.

4시 20분부터 제1과학관 31214 e+강의실에서 다과를 준비하오니 많은 참석 부탁드립니다

 

아 래

 

제목: 삼중항 여기자를 이용한 유기광전소자 연구

        Organic (polymer) electronics using triplet excitons

 

연사: 이  창  렬  교수님 (광주과학기술원) 

 

일시: 2012년 4월 18(수) 오후4:30

 

장소: 31214  e+첨단강의실

 

초록:  In polymer light emitting diodes (PLEDs), recombination of injected charge leads to the formation of both singlet and triplet excitons, of which normally only the singlets can decay radiatively. If the recombination process is statistical, only 25% of excitons will be formed as singlets; however, several reports have suggested that this limit may be broken in PLEDs. The issue remains controversial, largely because it is difficult to quantify the population of non-emissive triplet states in a device. Excited state absorption measurement can be used to quantify the population of triplet states in polymer films and device, but this measurement depends on the value of the triplet-triplet absorption cross-section, which in not well known. In the first section of this talk, the measurement of the triplet-triplet absorption cross-section of a conjugated polymer, F8BT, by using quasi-steady-state photo-induced absorption technique in phosphorescent dye blended polymer film will be discussed.

번호 제목 날짜 조회 수
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1055411
322 <5/9> Searching for 5th dimension 2012.05.03 72128
321 <5/2> Electrical Instability in Nanoscale Channel Devices: Top-down & Bottom-up Approaches 2012.04.19 83038
» <4/18> 삼중항 여기자를 이용한 유기광전소자 연구 2012.04.05 158427
319 <4/4> Cooking up elements in the universe: Nuclear astrophysics with exotic ion beams 2012.03.29 81820
318 <3/28> 양자물리학의 성립 과정 2012.03.22 72249
317 <3/21> 우주가속팽창의 원인 규명 2012.03.15 89346
316 <3/14> 시공간 왜곡과 우주론(Spacetime warp and Cosmology) 2012.03.07 78047
315 2012학년도 1학기 콜로퀴움 일정 안내 [5] 2012.02.29 84203
314 <12/7> Optical Antennas 2011.11.30 85315
313 <11/30> 기능성 산화물의 현황과 응용 2011.11.24 79561
312 <11/23> How statistical physics contributes to Internet world: perspectives, methods and applications 2011.11.15 86477
311 <11/16> Study of carrier transport and charging effects in organic devices 2011.11.10 105572
310 <11/9> Bosons in high Tc superconductors: an experimental survey 2011.10.31 104986
309 <11/2> Color Science for Reflective mode Optical Shutter 2011.10.27 140069
308 <10/26> 빛으로 보는 세상 2011.10.17 78836
307 <10/12> Introduction to the Proton Engineering Frontier Project 2011.10.10 80658
306 <10/5> Acoustic Metamaterials and Reversal of Sound 2011.09.26 90654
305 <9/21> Electronic phase transition in low dimensional SrTiO3/(Sr1-x,Lax)TiO3 oxide superlattices 2011.09.09 82270
304 <9/7> 과학과 예술 (Science and Arts) 2011.08.30 80236
303 2011학년도 2학기 콜로퀴움 일정 안내 2011.08.22 87062