| 학회 |
한국공업화학회 |
| 학술대회 |
2017년 가을 (11/08 ~ 11/10, 부산 벡스코(BEXCO)) |
| 권호 |
21권 2호 |
| 발표분야 |
나노_포스터 |
| 제목 |
Study of Non-linear PL Behavior of Chemically Treated Monolayer TMDs by Exciton Exciton Annihilation |
| 초록 |
Monolayer transition metal dichalcogenide (1L-TMDs) provides a convenient platform to design light emission from 2 dimensionally confined excitonic systems. Many body effects arising from strong interactions among carriers have been of considerable interest in nanoscience. The exciton-exciton annihilation (EEA) process reduces the generated excitons density and affects the performances of the opto-electronic devices. We studied multiexciton dynamics in chemically treated TMDs like MoS2, WS2 and WSe2 using non-linear photoluminescence (PL) spectroscopy. We also studied the many body correlations between excitons in pristine and chemically treated 1L-TMDs by excitation power dependence of PL and time resolved PL spectroscopy. We observed the decrease of the EEA rate after the chemical treatment. |
| 저자 |
Ganesh Ghimire, Yongjun Lee, Seokjoon Yun, 서창원, Hyun Kim, Roy Aad, Young Hee Lee, 김정용
|
| 소속 |
Sungkyunkwan Univ. / IBS Center for Integrated Nanostructure Physics (CINAP) |
| 키워드 |
TMDs; Confocal microscopy; Photoluminescence; exciton-exciton annihilation
|
| E-Mail |
|
