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 2022학년도 1학기 콜로퀴움 일정 2022.01.10 27950
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 973421
220 <11/23> How statistical physics contributes to Internet world: perspectives, methods and applications 2011.11.15 80611
219 <6/19> 초전도 특별세미나 2012.06.11 80701
218 <5/8> Complex Networks: Through the 3D Looking Glass 2013.05.02 80982
217 <7/21(월)> The rapid neutron capture nucleosynthesis: A hot topic in the Nuclear Astrophysics study 2014.07.15 81005
216 <11/5(화)> 특별세미나 개최 안내 2013.11.01 81009
215 <10/12> Kondo Effect in a Quantum-Dot-Topological-Superconductor Junction: A Numerical Renormalization Group Analysis 2012.10.08 81188
214 <10/17> The Interface Induced Magnetism 2012.10.11 81222
213 <3/30> Supersolidity in Helium 2011.03.25 81230
212 콜로퀴움 강연 일정표 2006.02.21 81402
211 <10/8 (월)>물리학과 특별세미나 개최 안내 2012.10.05 81499
210 <10/13> 물리학과 저차원 스핀계 연구팀 초청 세미나 2006.10.11 81522
209 <4/10> Mapulation of spins in organic compounds 2013.04.03 81556
208 <11/4>Plasmonic Properites of Metallic Nanostructures 2009.10.30 81574
207 <4/14> Neutron Star 2006.04.10 81615
206 <1/25> Perturbation during Inflation 2011.01.19 81634
205 <5/4> Kondo effect in nanoscopic devices 2011.04.28 81824
204 <5/29> Study on the electronic interactions in solids under high magnetic fields 2013.05.23 81960
203 <7/21> Next generation cryogenic free 1.5T MgB2-magnet based MRI 2010.07.20 82055
202 <5/25> 나노켈빈 원자 기체의 보즈-아인슈타인 응집 2011.05.18 82074
201 2012학년도 1학기 콜로퀴움 일정 안내 [5] 2012.02.29 82081