Article
Chemistry, Multidisciplinary
Jia-Sheng Li, Yong Tang, Zong-Tao Li, Jie-Xin Li, Xin-Rui Ding, Bin-Hai Yu, Shu-Dong Yu, Jian-Zhen Ou, Hao-Chung Kuo
Summary: The study shows that high refractive index, pore structure with comparable size, and lower QD adsorption amount contribute to enhanced QD light extraction efficiency. By optimizing packaging methods and NP mass ratio, highly efficient QD white LEDs were developed, achieving luminous efficacy comparable to phosphor-based white LEDs and paving the way for commercialization of white LEDs solely using QDs as converters in the future.
Article
Multidisciplinary Sciences
John You En Chan, Qifeng Ruan, Menghua Jiang, Hongtao Wang, Hao Wang, Wang Zhang, Cheng-Wei Qiu, Joel K. W. Yang
Summary: Light field prints displaying 3D information often appear pixelated due to limited resolution and misalignment between lenses and color pixels. Here, the authors present a one-step process via two-photon polymerization lithography to fabricate light field prints with high spatial and angular resolution.
NATURE COMMUNICATIONS
(2021)
Article
Optics
Lei Zhang, Chaonan Wang, Yonglong Jin, Tian Xu
Summary: Wide color gamut white light-emitting diodes (WLEDs) based on high-performance CdSe-based heterostructured nanoplatelets (NPLs) are reported. The NPLs, including CdSe/CdS and CdSe/ZnCdS, exhibit excellent photoluminescent properties and achieve an ultrawide color gamut covering 141.7% of the NTSC standard. This research demonstrates the huge potential of colloidal semiconductor NPLs for applications in new-generation lightings and displays.
Article
Chemistry, Multidisciplinary
Jae Seung Shin, Tae Yeon Kim, Su Been Heo, Jong-Am Hong, Yongsup Park, Seong Jun Kang
Summary: In this study, an organic-inorganic hybrid HIL was prepared by mixing V2O5 with PEDOT:PSS, which significantly improved the performance of QLEDs. The study showed that the addition of V2O5 increased the density of states near the Fermi energy level of PEDOT:PSS, leading to improved hole injection and QLED performance.
Article
Materials Science, Multidisciplinary
Asim Onal, Guncem Ozgun Eren, Rustamzhon Melikov, Lokman Kaya, Sedat Nizamoglu
Summary: In recent years, quantum dots (QDs) have emerged as a powerful building block for liquid-crystal display (LCD) technology, particularly in the form of color enhancement films. However, the challenge remains to develop efficient and wide color gamut LEDs for backlighting purposes. This study presents QD-based white LEDs that exhibit a high external quantum efficiency (EQE) of 39.8% and a wide NTSC color gamut coverage of 133.3%. These LEDs utilize giant CdSe/CdS core/shell QDs for red-emitting spectral range and green-emitting CdZnSeS/ZnS alloyed core/shell QDs, resulting in high photoluminescence quantum yield (PLQY) and narrow full width at half maximum (FWHM) values. The incorporation of QDs in liquid matrix on blue LED chips for LCD TV backlighting improves image brightness and color vibrancy, showcasing the potential of QD-based white LEDs for next-generation display technology.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Optics
Yanxia Yu, Yufeng Zhou, Yujie Zhang, Yaqian Zhang, Xiaodong Liu, Xiaojuan Liang, Jianping Liu, Suqin Chen, Weidong Xiang
Summary: CsPbX3 QDs were prepared using a hot injection strategy and compounded with mica for improved stability, leading to the successful fabrication of CsPbX3@mica composites. These composites exhibit high thermal stability and light radiation stability, showing promising performance in LED devices.
JOURNAL OF LUMINESCENCE
(2021)
Article
Optics
Rui Niu, Chi Zhang, Zihan Zhou, Feifei Wang, Xiaoshuai Li, Hongmei Ma, Yubao Sun
Summary: This research proposes a composite color filter that can achieve a wide color gamut and high optical efficiency in liquid crystal displays (LCDs). The composite filter is composed of a multi-layer polarization interference filter (ML-PIF) and a color filter. Experimental results demonstrate the potential of the composite filter in improving color gamut and optical efficiency in LCDs.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Chemistry, Multidisciplinary
Seong Ji Lee, Chan-mo Kang, Jin-Wook Shin, Dae Hyun Ahn, Chul Woong Joo, Hyunsu Cho, Nam Sung Cho, Hyoc Min Youn, Young Jae An, Jin Sun Kim, Jonghee Lee, Hyunkoo Lee
Summary: In this study, a high-luminance, low-voltage, three-wavelength top-emitting white OLED was developed for full-color microdisplay applications. Red, green, and blue color filters were deposited onto the OLED to enhance color gamut. The developed device exhibited high luminance and color gamut, demonstrating promising potential for OLED microdisplay technology.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Kuo-Yang Lai, Shuan Yang, Pin-Ru Chen, Min-Hua Yeh, Man-Lin Liao, Chang-Wei Yeh, Shih-Jung Ho, Yao-Tang Chang, Hsueh-Shih Chen
Summary: An Electroluminescent (EL) quantum dot light-emitting diode (QLED) array for pixel-on-demand display with 75 emitting zones has been demonstrated. By applying common electrode voltage to unselected rows, undesired electrical crosstalk can be effectively suppressed, allowing pixels to emit independently as needed. This study shows the feasibility of realizing a passive-matrix (PM) QLED display using a bank-free quantum dot film prepared from a coating process.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Optics
Jingxin Nie, Zhizhong Chen, Yiyong Chen, Zuojian Pan, Chuhan Deng, Haodong Zhang, Xin Xi, Weihua Chen, Xiangning Kang, Yongzhi Wang, Qi Wang, Weimin Dang, Wentian Dong, Tianhang Zhou, Shuzhe Zhou, Xin Yu, Guoyi Zhang, Bo Shen
Summary: This study investigated the circadian effect, photobiological safety, and color gamut of a four-primary-color display. The results showed that this display has a wide color gamut, high stability, and lower potential health risks compared to other displays.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Optics
Zhaoping Chen, Qin Wang, Ziyao He, Yao Tong, Xiaojuan Liang, Bingsuo Zou, Weidong Xiang
Summary: CsPbBr3 nanocrystals encapsulated in MCM-41 molecular sieve composite showed highly efficient green emission and outstanding stability, expanding their potential in display applications.
JOURNAL OF LUMINESCENCE
(2022)
Article
Optics
Bingle Huang, Enguo Chen, Lei Sun, Tailiang Guo
Summary: This paper presents an effective approach for preparing quantum-dot color conversion films in white-balance display backlights. The theoretical adjustment method and experimental verification successfully achieved the target white balance.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Chemistry, Physical
Suhyeon Lee, Donghyo Hahm, Suk-Young Yoon, Heesun Yang, Wan Ki Bae, Jeonghun Kwak
Summary: In this study, a novel concept of QD-organic hybrid light-emitting diodes (QLEDs) is presented, which improves the performance of QLEDs and simplifies the manufacturing process, leading to higher resolution and full-color displays.
Article
Physics, Multidisciplinary
Chi Zhang, Rui Niu, Wenjuan Li, Xiaoshuai Li, Hongmei Ma, Yubao Sun
Summary: A narrow-band birefringent filter has been proposed and applied in wide color gamut displays, enhancing color gamuts by over 30%NTSC. The filter can reduce deep blue light in display spectrum, improving color saturation to 126%NTSC in liquid crystal displays and 138%NTSC in organic light-emitting devices.
Review
Chemistry, Physical
Zinan Chen, Haotao Li, Cuixia Yuan, Peili Gao, Qiang Su, Shuming Chen
Summary: Colloidal quantum-dot-based light-emitting diodes (LEDs) with narrow emission linewidth show great potential for high-precision color displays. However, the industrialization of QLED displays still faces challenges including unclear device mechanisms, low blue performance, and immature color patterning processes. This paper provides a comprehensive review of recent advancements in QLED displays and focuses on device mechanisms, blue QLEDs, and color patterning. Opportunities, challenges, solutions, and future research directions are also summarized.
