科研之友
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摘要
In this thesis, photo-chemically induced emission tuning was used for the definition of pixels emitting the three primary colors of green, orange, and red. This study used the commercially common organic green fluorescent material 10-(2-Benzothiazolyl)-2,3,6,7-tetrahydro-1,1,7,7-tetramethyl-1H,5H,11H-(1)benzopyropyrano(6,7-8-I,j)quinolizin-11-one (C545T). C545T was doped into an SU8-negative photo-resist to prepare the color conversion film. The colors of the color conversion film were adjusted using the time of exposure to UV light (I-line 365 nm). In the unexposed film areas, there was a green fluorescent thin film (L1-Green). The exposure of the selected areas of the thin film increased with the exposure time, and the light acid number of the SU8 photo-resist continuously rose. The interaction of the photo-acid and C545T resulted in acid-induced quenching. When the exposure time was 120 s, the thin film changed to orange (L2-Orange). When the exposure time lasted up to 360 s, the C545T in the thin film finished reacting with the photo-acid to producemostly protonated C545T, and the thin film changed into a red fluorescent thin film (L3-RED), leading to a wave of redshift. The absorption and the emission of L1, L2, and L3 were photo-chemically induced changes. L1, L2, and L3 were closely attached with the blue PLED backlight to achieve a tunable emission module, which was an optic thin film attached to the color-changing materials. In sum, this study developed organic color-change material technology that could optimize the distinctive features of a TFT-LCD and an AM-organic light-emitting diode (OLED) display. The confirmation of the organic thin film highlights the potential of TFT-LCD and OLED displays.
- 出版日期2013
- 单位中山大学
