title: Mesoporous Silica Particles Integrated with All-Inorganic CsPbBr3 Perovskite Quantum-Dot Nanocomposites (MP-PQDs) with High Stability and Wide Color Gamut Used for Backlight Display.
abstract: All-inorganic CsPbX3 (X=I, Br, Cl) perovskite quantum dots (PQDs) have been investigated because of their optical properties, such as tunable wavelength, narrow band, and high quantum efficiency. These features have been used in light emitting diode (LED) devices. LED on-chip fabrication uses mixed green and red quantum dots with silicone gel. However, the ion-exchange effect widens the narrow emission spectrum. Quantum dots cannot be mixed because of anion exchange. We address this issue with a mesoporous PQD nanocomposite that can prevent ion exchange and increase stability. We mixed green quantum-dot-containing mesoporous silica nanocomposites with red PQDs, which can prevent the anion-exchange effect and increase thermal and photo stability. We applied the new PQD-based LEDs for backlight displays. We also used PQDs in an on-chip LED device. Our white LED device for backlight display passed through a color filter with an NTSC value of 113 % and Rec. 2020 of 85 %.
authors.affiliation: Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan.
authors.forename: Hung-Chia
authors.initials: HC
authors.lastname: Wang
authors.affiliation: Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan.
authors.forename: Shin-Ying
authors.initials: SY
authors.lastname: Lin
authors.affiliation: Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan.
authors.forename: An-Cih
authors.initials: AC
authors.lastname: Tang
authors.affiliation: Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan.
authors.forename: Bheeshma Pratap
authors.initials: BP
authors.lastname: Singh
authors.affiliation: Lextar Electronic Corporation, Hsinchu, 300, Taiwan.
authors.forename: Hung-Chun
authors.initials: HC
authors.lastname: Tong
authors.affiliation: Lextar Electronic Corporation, Hsinchu, 300, Taiwan.
authors.forename: Ching-Yi
authors.initials: CY
authors.lastname: Chen
authors.affiliation: Lextar Electronic Corporation, Hsinchu, 300, Taiwan.
authors.forename: Yu-Chun
authors.initials: YC
authors.lastname: Lee
authors.affiliation: Lextar Electronic Corporation, Hsinchu, 300, Taiwan.
authors.forename: Tzong-Liang
authors.initials: TL
authors.lastname: Tsai
authors.affiliation: Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan. rsliu@ntu.edu.tw.|Department of Mechanical Engineering and Graduate Institute of Manufacturing Technology, National Taipei University of Technology, Taipei, 106, Taiwan. rsliu@ntu.edu.tw.
authors.forename: Ru-Shi
authors.initials: RS
authors.lastname: Liu
keywords: all-inorganic perovskite quantum dots; backlight; light emitting diode; white light