Insights into structural defect formation in individual InP/ZnSe/ZnS quantum dots under UV oxidation
2024 · Nature Communications
저자
Hayeon Baek, Sungsu Kang, Junyoung Heo, Soonmi Choi, Ran Kim, Kihyun Kim, Nari Ahn, Yeo‐Geon Yoon, Taekjoon Lee, Jae Bok Chang, Kyung Sig Lee, Young‐Gil Park, 박정원 (Jungwon Park)
연구주제
Quantum Dots Synthesis And Properties · 2D Materials and Applications
NTIS 과학기술표준분류
에너지/자원만에너지·환경·원자력 확장
가장 가까운 분류(전기/전자 > 디스플레이 > QD 디스플레이)가 에너지·환경·원자력 확장 범위 밖이다.
AI 연구 키워드·방법
인듐인화물 양자점(InP QD) quantum dot light emitting diode structural defect
키워드 (OpenAlex)
InP/ZnSe/ZnS quantum dots UV oxidation structural defects dislocations surface oxide layer surface passivation in-diffusion emission quenching
초록
InP/ZnSe/ZnS quantum dots (QDs) stand as promising candidates for advancing QD-organic light-emitting diodes (QLED), but low emission efficiency due to their susceptibility to oxidation impedes applications. Structural defects play important roles in the emission efficiency degradation of QDs, but the formation mechanism of defects in oxidized QDs has been less investigated. Here, we investigated the impact of diverse structural defects formation on individual QDs and propagation during UV-facilitated oxidation using high-resolution (scanning) transmission electron microscopy. UV-facilitated oxidation of the QDs alters shell morphology by the formation of surface oxides, leaving ZnSe surfaces poorly passivated. Further oxidation leads to the formation of structural defects, such as dislocations, and induces strain at the oxide-QD interfaces, facilitating In diffusion from the QD core. Th…
이 논문을 지원한 국가R&D 과제 (NTIS 성과)
| 연도 | 과제 | 부처 | 사업 | 수행기관 | NTIS 분류(1순위) |
|---|---|---|---|---|---|
| 2024 | 나노입자의 합성과 의료, 에너지 분야 응용 | 과학기술정보통신부 | 기초과학연구원연구운영비지원(주요사업비) | 기초과학연구원 | – |
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Quantum Dots Synthesis And Properties