Park, Jinseo Shim, Jaeho Son, Dong Ick 2025-03-23T11:30:27Z 2025-03-23T11:30:27Z 2025-03-19 2025-05 0361-5235 https://pubs.kist.re.kr/handle/201004/152076 The charge separation ability of zinc oxide (ZnO)-fullerene (C-60) quantum dots (QDs) was analyzed and ultraviolet photodetectors were fabricated using spin-coating methods. The structural properties of the ZnO-C-60 core-shell QDs and poly-N-vinylcarbazole (PVK) polymer composites were analyzed using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Optical characterization studies revealed that the ZnO-C-60 core-shell QDs exhibit a higher quenching effect ratio (97.72%) in the ultraviolet region and higher F & ouml;rster resonance energy transfer efficiency (89%) from direct conjugation with the ZnO core to the C-60 shell. The photodetectors based on ZnO-C-60 core-shell QDs generated photocurrent of 4.92 mu A under an external bias of 1 V at a wavelength of 365, and the photo-responsivity was 1.51 A/W. The photo-reaction mechanism is explained through energy diagrams based on experimental results. English Institute of Electrical and Electronics Engineers Fast Charge Separation by Direct Combination of Fullerene C60 with ZnO Quantum Dots and its Application in Ultraviolet Photodetectors Article 10.1007/s11664-025-11832-8 1 Journal of Electronic Materials, v.54, no.5, pp.4042 - 4049 Journal of Electronic Materials 54 5 4042 4049 N scie scopus 001652005600043 2-s2.0-86000337862 Engineering, Electrical & Electronic Materials Science, Multidisciplinary Physics, Applied Engineering Materials Science Physics Article PHOTOLUMINESCENCE NANOPARTICLES PERFORMANCE BAND ZnO C-60 ZnO-C-60 core-shell quantum dot fast charge separation nanocomposites ultraviolet photodetector