Environmentally friendly quantum-dot color filters for ultra-high-definition liquid crystal displays
Autor: | Gyeong-Ju Kim, Prem Prabhakaran, Kwang-Sup Lee, Yun-Hyuk Ko, Changhee Lee, Sinil Choi |
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Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
Materials science
lcsh:Medicine 02 engineering and technology 010402 general chemistry 01 natural sciences Article law.invention Gamut law Color gel lcsh:Science Multidisciplinary Liquid-crystal display business.industry lcsh:R 021001 nanoscience & nanotechnology 0104 chemical sciences Chemistry Optics and photonics Quantum dot Filter (video) RGB color model Optoelectronics Color filter array lcsh:Q 0210 nano-technology business CIE 1931 color space |
Zdroj: | Scientific Reports, Vol 10, Iss 1, Pp 1-8 (2020) Scientific Reports |
ISSN: | 2045-2322 |
Popis: | This work reports the synthesis and application of highly tuned cadmium-free green and red InPZnSe1−xSx/ZnS quantum dots (QDs) in QD enhanced liquid crystal displays (LCD). The emissions of the quantum dots were synthetically tuned to sharp emissions at low full-width at half maximum. The QDs were incorporated in LCD devices as quantum dot enhancement film (QDEF) or as a quantum dot incorporated color filter (QDCF). Synthetic tuning of the gradient inter-shell in the QDs leads to reduced full width at half-maximum, resulting in sharp green and red emissions from both types of devices. The application of the same QDs to devices using these different integration techniques shows the superiority of QDCF devices over QDEF ones. The RGB color gamut of a QDCF-LCD was 81.4% of REC.2020 in the CIE 1931 color space compared to 71.2% obtained for a QDEF-LCD display. The improved performance of QDCF was mainly due to the optimal interactions between the green QDs and the green color filter. The superior performance of cadmium-free InPZnSe1−xSx/ZnS QDCFs in LCDs make them well-suited for ultra-high-definition TV formats. |
Databáze: | OpenAIRE |
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