korean english


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 1078184
665 <Oct. 6(Wed.)> 블랙홀에서 쌍꺼풀수술까지 2021.09.29 6117
664 <Nov. 29(Mon.)>Exploring light-matter interactions at atomic scale using electron microscopy 2021.11.22 7956
663 <Nov. 10(Wed.)>Optical Spectroscopy of 2-Dimensional Materials 2021.11.03 9065
662 <Nov. 3(Wed.)>시공간의 구조: 상대성이론, 특이점, 우주상수 2021.10.28 9918
661 <April 21(Wed.)> 우주배경복사 편광 관측 - 남극점 기지 바이셉/켁 어레이(BICEP/Keck Array) 망원경 2021.04.12 10134
660 <April 28(Wed.)> 손에 잡히는 AI 2021.04.21 10659
659 <Dec.9(Wed.)>한국형 암흑물질 실험 2020.12.02 15663
658 <Oct.14(Wed.)>New Ways to Search for the Dark World 2020.10.12 16114
657 <Sep.23(Wed.)>나는 내 마음이야 2020.09.16 16803
656 <Sep.16(Wed.)>Artificial Crystal 2020.09.14 19817
655 <Sep. 8(Wed.)> Utilizing physics to build a trapped-ion quantum computer 2021.09.01 23031
654 <May 12(Wed.)> Nanomechanical oscillators for quantum technology 2021.05.06 23292
653 <July 21(Wed.)> Strongly Correlative Ionics 2021.07.19 28101
652 <Mar.17(Wed.)> Glue spectrum for superconductivity obtained via optical spectroscopy 2021.03.10 28307
651 <Nov.11(Wed.)>Nonlinear optics to study charge, spin, and crystalline structures 2020.11.04 30891
650 <June 23(Wed.)>Valley Polarization and Exciton Hall Effect in Transition Metal Dichalcogenides 2021.06.22 30934
649 <Aug. 6(Fru.)> Gravitationally probing dark matter (DM) microphysics 2021.08.03 31072
648 <8/1(Sat.)> Recent Advances in Deep Learning 2020.07.29 34682
647 <Nov.13(Wed.)>The Science of Quark-Gluon Plasma 2019.11.06 36741
646 <Oct.28(Wed.)> Physics of Global Warming 2020.10.22 38887