Farooq, Fiza Shin, Seungyong Lee, Ja Yeon Kyhm, Jihoon Kang, Gumin Ko, Hyungduk Jang, Ho Seong 2024-07-26T04:30:26Z 2024-07-26T04:30:26Z 2024-07-25 2024-07 1944-8244 https://pubs.kist.re.kr/handle/201004/150291 Multicolor tunable upconversion nanoparticles (UCNPs) have garnered attention owing to their diverse applications such as displays, imaging, and security. Typically, achieving multicolor emission from UCNPs requires complicated core/multishell nanostructures comprising a core with at least five shells. Here, we propose a strategy to achieve bright and orthogonal red (R), green (G), and blue (B) upconversion (UC) luminescence without synthesizing complicated core/quintuple-shell or core/sextuple-shell nanostructures. For achieving bright and orthogonal RGB triprimary color UC luminescence, orthogonal bicolor-emitting core/shell-structured UCNPs are synthesized and blended. Orthogonal RB, RG, and GB luminescence are achieved through photon blocking. The combination of two orthogonal bicolor-emitting UCNPs exhibits pure RGB UC luminescence and full-color tunability via manipulation of excitation laser conditions. Furthermore, we present color displays achieved with transparent UCNP-polymer composites utilizing three distinct near-infrared light wavelengths, implying that the proposed strategy for attaining RGB UC luminescence may facilitate advancements in the development of full-color volumetric displays. English American Chemical Society Strategy to Achieve a Pure Red/Green/Blue-Emitting Upconversion Luminescence for Full-Color Displays Article 10.1021/acsami.4c05482 1 ACS Applied Materials & Interfaces, v.16, no.29, pp.38221 - 38230 ACS Applied Materials & Interfaces 16 29 38221 38230 N scie scopus 001267828300001 2-s2.0-85198712053 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science Article NANOCRYSTALS GREEN STATE RED upconversion nanoparticles orthogonal luminescence multicolor tuning polymer composites transparentdisplays