| 학회 |
한국화학공학회 |
| 학술대회 |
2021년 봄 (04/21 ~ 04/23, 부산 BEXCO) |
| 권호 |
27권 1호, p.840 |
| 발표분야 |
재료 |
| 제목 |
Highly Efficient White Light Emitting Electrochemical Cells of Organosilane-Modified Zinc Oxide Quantum dots |
| 초록 |
This paper reports data for WLECs generated with ZnO QDs and ZnO-MPS QDs using a spin-coating process. 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. |
| 저자 |
Hariventhan Ragupathi1, 최영선2
|
| 소속 |
1Pusan National Univ., 2부산대 |
| 키워드 |
화공재료 |
| E-Mail |
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| 원문파일 |
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