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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/92117

    Title: 順序熱蒸鍍全無機混合鹵化物鈣鈦礦紅色發光二極體之研究;The Study of Sequential Vacuum Deposition of All-Inorganic Hybrid Halide Perovskite For Red Light Emitting Diode
    Authors: 王莉惠;Wang, Li-Hui
    Contributors: 能源工程研究所
    Keywords: 全無機混合鹵化物鈣鈦礦;熱蒸鍍;無機混合鹵化物鈣鈦礦紅色發光二極體;Sequential Vacuum Deposition;All-Inorganic Hybrid Halide Perovskite;All-Inorganic Hybrid Halide Perovskite For Red Light Emitting Diode
    Date: 2023-08-03
    Issue Date: 2023-10-04 15:19:06 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 鈣鈦礦是一種具有可調能隙特性的材料,可調節其光致和電致發光的波長。透過改變鈣鈦礦結構中的X位鹵化物成份配比,或在A、B位摻雜不同的陽離子,能夠調控出所需的特定光致、電致發光波長,以達到廣色域的目標,涵蓋紅、綠、藍三個原色的CIE色域座標。
    在電致發光(LED發光)方面,在2.74V時,元件達到最大亮度為135.4nit,其CIE1931色度座標為(0.7239, 0.2732),對應的發光波長接近正紅光波長的648nm。
    ;Perovskite is a material with adjustable bandgap properties, allowing for tuning its wavelength in both photoluminescence and electroluminescence. By changing the halide composition ratio or doping different cations, specific photoluminescence and electroluminescence wavelengths can be achieved, covering a wide color range including red, green, and blue CIE1931 color coordinates.
    In this study, we prepared Perovskite CsPbI3-xBrx thin films using the sequential thermal evaporation method. Various preparation methods and layer combinations were explored, including single-layer with mixed Perovskite powders (CsPbI3+CsPbBr3), as well as bilayers, trilayers, and quadrilayers.
    The composition and crystalline structure of the materials under annealed and non-annealed conditions were analyzed primarily using XRD and UV-vis spectroscopy instruments. The data obtained from these analyses were used to evaluate the variations in film composition under different processes.
    After careful assessment and comparison, we selected the single sequential thermal evaporation method with CsI/ mixed Perovskite (CsPbI3+CsPbBr3) to prepare the CsPbI3-xBrx thin films. This preparation method showed excellent performance in terms of simplicity and efficiency during the sequential thermal evaporation process. After annealing treatment, UV-vis spectroscopy and XRD analysis confirmed that the thin film′s composition and crystalline phase met the requirements for the desired black phase CsPbI3-xBrx.
    Regarding electroluminescence, the device achieved its maximum brightness of 135.4nit at 2.74V, with CIE1931 color coordinates of (0.7239, 0.2732), corresponding to a near-red light wavelength of 648nm.
    Appears in Collections:[能源工程研究所 ] 博碩士論文

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