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 1091334
658 <5/23> 나노구조 산화물 재료의 기능성-용매화전자에서 전자화합물까지... 2012.05.17 174824
657 <7/9> Strange Metallic Behavior in Anisotropic Background 2010.07.01 172652
656 <11/5> Discussion on recent observation of cosmological dipole of alpha 2010.11.04 172368
655 <6/2> The black hole search at the LHC: critical comment 2011.06.01 172320
654 <5/26>BK21 물리연구단 석학초빙 특별 세미나 2010.05.17 171621
653 2020학년도 2학기 콜로퀴움 일정 2020.07.16 169324
652 <11/2> Color Science for Reflective mode Optical Shutter 2011.10.27 168344
651 <June 10(Thu.)>Oxide electronics utilizing spin-orbit coupling 2021.05.31 168156
650 <9/25> 청각의 물리학: 어떻게 노이즈를 극복하는가? 2013.09.16 167942
» <4/18> 삼중항 여기자를 이용한 유기광전소자 연구 2012.04.05 167027
648 <6/25(화)>물리학과 특별세미나 개최 안내 2013.06.24 166043
647 <9/15> Resistance Switching Behavior of Epitaxially Grown NiO Thin Films 2009.09.07 165981
646 <5/22> Semiconductor Nanomaterials for Unusual Format Electronics 2009.05.18 164440
645 <Dec.5(Wed.)> 두 펄사 이야기 2018.11.28 162897
644 <5/22> Computer-based Mathematical Analysis and Applications to Physics (컴퓨터 기반 수리해석과 물리학에의 응용) 2013.05.15 162548
643 <11/27> Energy Amplifier Systems:Simulation and Experiments in the Field 2009.11.23 158959
642 <12/26> Emergent Physics in 3D Correlated Topological Semimetals file 2013.12.20 157992
641 <10/27> 'Brain dynamics underlying human decision-making' 2006.10.21 157884
640 <10/8>"Einstein was wrong?"--Two-proton spin- correlation measurement for EPR paradox. 2010.10.04 157604
639 <April 7(Wed.)> Mid-scale facilities for condensed matter research: high magnetic field and neutron scattering 2021.03.31 155434