Byambasuren, Nyamsuren Hong, A-Ra Lee, Woo-Young Byun, Ji Young Kang, Gumin Ko, Hyungduk Jang, Ho Seong 2024-01-19T11:01:36Z 2024-01-19T11:01:36Z 2022-11-10 2022-10 2045-2322 https://pubs.kist.re.kr/handle/201004/114464 In this study, heavy-metal-free orange light-emitting ZnSe:Mn2+/ZnS doped-core/shell (d-C/S) quantum dots (QDs) were synthesized using a nucleation doping strategy. To synthesize high quality d-C/S QDs with high photoluminescence (PL) quantum yield (QY), the Mn2+ concentration was optimized. The resulting ZnSe:Mn2+(5%)/ZnS d-C/S QDs showed a high PL QY of 83.3%. The optical properties of the synthesized QDs were characterized by absorption and PL spectroscopy. Their structural and compositional properties were studied by X-ray diffraction, transmission electron microscopy, and energy dispersive X-ray spectroscopy. After doping Mn2+ into a ZnSe core, the ZnSe:Mn2+/ZnS d-C/S QDs showed a large Stokes shift of 170 nm. The ZnSe:Mn2+/ZnS d-C/S QDs were embedded in a poly(lauryl methacrylate) (PLMA) polymer matrix and the ZnSe:Mn2+/ZnS-based polymer film was fabricated. The fabricated ZnSe:Mn2+/ZnS-PLMA film was highly transparent in the visible spectral region (transmittance > 83.8% for lambda >= 450 nm) and it exhibited bright orange light under air mass (AM) 1.5G illumination using a solar simulator. The optical path-dependent PL measurement of the ZnSe:Mn2+/ZnS-PLMA film showed no PL band shift and minimal PL decrease under variation of excitation position. These results indicate that the highly efficient and large Stokes shift-emitting ZnSe:Mn2+/ZnS QDs are promising for application to luminescent solar concentrators. English Nature Publishing Group Environmentally friendly, highly efficient, and large stokes shift-emitting ZnSe:Mn2+/ZnS core/shell quantum dots for luminescent solar concentrators Article 10.1038/s41598-022-21090-x 1 Scientific Reports, v.12, no.1 Scientific Reports 12 1 Y scie scopus 000870820900041 Multidisciplinary Sciences Science & Technology - Other Topics Article MN-DOPED ZNSE NANOCRYSTAL EMITTERS OPTICAL-PROPERTIES ENERGY ABSORPTION EMISSION DYE