| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 가을 (10/11 ~ 10/13, 제주컨벤션센터) |
| 권호 |
42권 2호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Synthesis and Opto-Electrical Properties of Ligand Exchanged Organic-Inorganic Hybrid Perovskite Quantum Dots |
| 초록 |
The perovskite quantum dots (QDs) were synthesized at various solvents with different solvent parameters (i.e., dipole moment and electrical susceptibility). The crystallinity and PLQYs of QDs were decreased with increasing solvent electric field capability values due to the presence of lead vacancies in the crystal structure. After surface ligand exchange process, PLQY of perovskite QD film was enhanced significantly due to reduced non-radiative exciton recombination which originated from surface dangling trap level. Finally, QDs-LED using ligand exchanged perovskite QD as emissive layer exhibits 2.5 times higher current efficiency compared to QDs-LED using pristine QDs. |
| 저자 |
최진우1, 우희철1, 진상현2, 이재석3, 이창열1
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| 소속 |
1광주과학기술원 고등광기술(연), 2전북대, 3광주과학기술원 신소재공학부 |
| 키워드 |
Perovskite; Quantum dots; Ligand exchange
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| E-Mail |
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