| 학회 |
한국화학공학회 |
| 학술대회 |
2022년 봄 (04/20 ~ 04/23, 제주국제컨벤션센터) |
| 권호 |
28권 1호, p.1398 |
| 발표분야 |
[주제 12] 화학공학일반(부문위원회 발표) |
| 제목 |
Organosilane Surface-Modified Zinc Oxide Quantum Dots for Highly Efficient White Light Emitting Electrochemical Cells |
| 초록 |
Due to its direct band gap of 3.3 eV at room temperature and wide exciton binding energy of 60 meV, zinc oxide nanoparticles (ZnO NPs) have been considered as a promising candidate in the production of excitonic optoelectronic devices such as QD-LECs. To avoid the agglomeration and for dispersibility improvement surface modification should be made by 3-(trimethoxysilyl) propyl methacrylate (MPS). Using a simple and low-cost updated precipitation process, the syntheses were carried out and, characterized the QDs using X-ray diffraction (XRD), Fourier transform infrared spectra (FTIR) and solid state photoluminescence spectra (PL) were carried out respectively. Compared to the well-known effect of the reduction in nanoparticle size, an unexpected decrease in the band gap energy was obtained and provides a new insight into the relationship between the importance of the band gap energy and the existence of the organic surfactant that facilitated the reduction in the size of the nanoparticle. Finally, the material with the best light emission efficiency was used as an active layer to prepare the Quantum dot Light emitting electrochemical cells (QD-LECs). |
| 저자 |
Hariventhan Ragupathi1, 최영선2
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| 소속 |
1Pusan National Univ., 2부산대 |
| 키워드 |
재료(Materials) |
| E-Mail |
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| 원문파일 |
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