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 1091311
36 <April 7(Wed.)> Mid-scale facilities for condensed matter research: high magnetic field and neutron scattering 2021.03.31 155428
35 <10/8>"Einstein was wrong?"--Two-proton spin- correlation measurement for EPR paradox. 2010.10.04 157599
34 <10/27> 'Brain dynamics underlying human decision-making' 2006.10.21 157877
33 <11/27> Energy Amplifier Systems:Simulation and Experiments in the Field 2009.11.23 158948
32 <5/22> Computer-based Mathematical Analysis and Applications to Physics (컴퓨터 기반 수리해석과 물리학에의 응용) 2013.05.15 162477
31 <Dec.5(Wed.)> 두 펄사 이야기 2018.11.28 162891
30 <5/22> Semiconductor Nanomaterials for Unusual Format Electronics 2009.05.18 164434
» <4/18> 삼중항 여기자를 이용한 유기광전소자 연구 2012.04.05 167025
28 <9/25> 청각의 물리학: 어떻게 노이즈를 극복하는가? 2013.09.16 167936
27 <11/2> Color Science for Reflective mode Optical Shutter 2011.10.27 168338
26 2020학년도 2학기 콜로퀴움 일정 2020.07.16 169318
25 <5/23> 나노구조 산화물 재료의 기능성-용매화전자에서 전자화합물까지... 2012.05.17 174807
24 <11/13> Manmade Elements 2009.11.10 175717
23 <11/7> On-Film Formation of Bi Nanowires with Extraordinary Electron Mobility 2008.11.03 177383
22 <12/5> Fluerenes with diversed structures and their applications 2008.12.02 177619
21 <9/19> Downscaling of self-aligned, all-printed polymer thin-film transistors 2008.09.16 180068
20 <4/2> Radio Detection of Ultra High Energy Cosmic Rays and Neutrinos in Antarctica 2014.03.26 185511
19 <12/4> Shining light on the dark Universe 2013.11.29 185754
18 <Nov. 18(Wed.) 4:30 PM> Single-molecule chemistry and spectroscopy on ultrathin insulating films 2015.11.11 188577
17 <3/13> Probing hidden magnetism and quantum criticality in unconventional superconductors 2009.03.06 195956