NANOTECHNOLOGY
·
2023
·Vol. 34
·期 45
·45LT01
·
IF 3.5
Ying Chen,Huaruo Cui,Ran Duan,Ruiqi Tang,Yingping Tong,Dongyu Zhao,Wanli He
Blue phase liquid crystals (BPLCs) have significant potential in the field of liquid crystal displays (LCDs) and are proposed as potential next-generation of LCDs candidates. However, BPLCs do not emit light directly and need an extra backlight device. As a result, the blue phase liquid crystal display retains the disadvantages of low brightness and low energy efficiency, which remarkably limit its application. Recently, as a kind of novel fluorescent carbon nanomaterials, carbon dots (CDs) have captured considerable attention because of their excellent optical properties. Here, CDs were directly synthesized by a simple solvothermal method and introduced into BPLCs. By combining the excellent optical properties of CDs with the blue phase liquid crystal system, the photoluminescent blue phase liquid crystals (CDs-BPLCs) with self-photoluminescence are prepared. Meanwhile, the stability of BPLCs can be improved by CDs. Such CDs-BPLCs have enormous potential in the development of novel energy-saving display devices.
研究领域:
材料科学
·
光学
·
显示技术
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2021
·Vol. 9
·期 30
·9599-9609
·
IF 7.393
Cong Shen,Yanqing Zhu,Zixiao Li,Jingling Li,Hong Tao,Jianhua Zou,Xueqing Xu,Gang Xu
InP quantum dots (QDs) are considered as the most promising alternative to Cd-based QDs with lower toxicity, and emission spectrum tunability ranging from the visible to near-infrared region. Although high-quality fluorescent InP QDs have been successfully synthesized by several groups, the rigorous synthesis conditions hinder its practical use in display devices. In this work, for the first time, we introduce Zn2+ into the growth stage of the InP QDs to prepare an InP–In(Zn)P core, and then the as-grown InP–In(Zn)P cores were consecutively coated with typical double shells of inner ZnSe and outer ZnS. The final InP–In(Zn)P/ZnSe/ZnS core/shell/shell QDs exhibited a maximum photoluminescence (PL) quantum yield (QY) of 94.3% and have tunable emissions from yellow (569 nm) to red (630 nm), showing a potential application in display devices. Above all, compared with other related studies, the excellent PL properties were obtained in relatively milder conditions (ultimate vacuum level of 400 mTorr). The results of this study provide guidance for the commercial application of InP QDs as a viable alternative to Cd-based QDs.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
InfoMat
·
2023
·Vol. 5
·期 7
·e12417
·
IF 22.7
Chao Fan,Haipeng Liu,Jianwu Zhou,Xingliang Dai,Haiping He,Zhizhen Ye
Perovskite nanocrystals (NCs) with high stabilities and excellent optical performances are crucial for display applications. However, to date, perovskite emitters with both high photoluminescence (PL) quantum yield (PLQY) and high stabilities under harsh synergistic humidity–heat–light aging conditions have not been reported. The promising high-temperature solid-state sintering with single oxide matrices cannot ensure high PLQY and synergistic aging stabilities of perovskites. Herein, both the PLQY and overall (thermal, moisture, and photo) stabilities of all-inorganic perovskite (CsPbBr 3 ) NCs are improved by dual-matrix encapsulation, which is accomplished by in situ crystallization of CsPbBr 3 @Cs 4 PbBr 6 nanocomposites in silica molecular sieve (MS) templates via advanced solid-state synthesis a using precisely controlled molar ratio of precursor components and cooling rates. The Cs 4 PbBr 6 matrix effectively passivates the surfaces of CsPbBr 3 NCs, and the MS matrix insulates CsPbBr 3 @Cs 4 PbBr 6 from the external environment. The resulting CsPbBr 3 @Cs 4 PbBr 6 /MS composites exhibit the highest PLQY (>90%) among those of the solid-state perovskite NCs and significant stabilities against water, heat, and blue light irradiation, maintaining more than 80% of their initial PL intensities after being aged for 1000 h under synergistic high-humidity (85%), high-temperature (85°C), and strong blue light irradiation (350 mW cm −2 ) conditions. To the best of our knowledge, these CsPbBr 3 @Cs 4 PbBr 6 /MS composites represent the most stable perovskite emitters under synergistic humidity–heat–light aging conditions. The liquid crystal display backlight module fabricated using these stable composites demonstrates a wide color gamut of 131% of the National Television Standards Committee standard. We speculate that this dual-matrix encapsulation can be used for industrial mass production.
研究领域:
材料科学
·
光学工程
·
显示技术
✓ 已验证
产品关联
DOI
高影响因子
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
·
2015
·Vol. 212
·期 9
·2023-2030
·
IF 1.616
Xia Chen,Hongwei Jiang,Robert A. Hayes,Xiange Li,Tao He,Guofu Zhou
The screen printing of amorphous fluoropolymer films as insulators for electrofluidic display device use is demonstrated. Screen printing enables the hydrophobic dielectric to be directly patterned at device level with the required film thickness as well as excellent material utilisation. The films give very good electrical performance, with high uniformity and dielectric strength, and the resulting devices exhibit comparable electro-optic behaviour to those fabricated with spin-coated films.
研究领域:
材料科学
·
显示技术
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-10
·
IF 15.7
Huang Shichao,Guo Haotian,Xia Pengfei,Sun Hongcan,Lu Changgui,Feng Yuge,Zhu Jing,Liang Cai,Xu Shuhong,Wang Chunlei
Luminescent solar concentrators are translucent photovoltaic modules potentially used for building window. To store the energy generated by them, a separate energy storage module and voltage regulator module are required, but it is clear that this pairing is unwieldy for application. To address this problem, we propose a “face-to-face” tandem integration of luminescent solar concentrators and electrochromic supercapacitors. In this case, the separated energy storage module and voltage regulator module are not required, since the electric energy produced by concentrators under sunlight can be directly stored by the supercapacitors with matched voltage window. The charged energy storage module can be used to supply low-power devices. Moreover, electrochromic supercapacitors exhibit adjustable average visible transmission under different energy storage state, making the integrated device interesting for self-powered electrochromic smart windows or display devices. As an example, a self-powered information instruction display is prepared, and text messages could be clearly and rapidly displayed in a controllable manner. The integrated device capable of photovoltaic conversion, energy storage, and electrochromism is a promising alternative for smart windows.
研究领域:
材料科学
·
能源技术
·
光电技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 44
·2307609
·
IF 19
Siyu Zhang,Yan Zhu,Yifan Xia,Kangting Liu,Shuhan Li,Biao Yang,Mingyuan Li,Xinrong Zhi,Xin Wang
Anti-counterfeiting and visual optical information encryption/decryption technology have attracted widespread attention in the field of information security. Luminescent encryption technologies still face a huge challenge in external high voltage power supply, complex architecture, and expensive decryption equipment, which hinder their broad applications. Herein, a wearable integrated self-powered electroluminescent (EL) display device (W-ELD) that consists of MXene/Silicone-based triboelectric nanogenerator (MS-TENG) and EL device based on a shared MXene electrode is developed for patterned display and information encryption. The W-ELD features an all-in-one MXene electrode with excellent flexibility and high conductivity of 0.6 kΩ sq −1 , which is shared by both MS-TENG and EL devices. The MS-TENG demonstrates excellent output performances (output power of 0.9 Wm −2 ) and high stability and durability (10 4 cycles), which can directly light up the flexible patterned EL device. More importantly, when dripping conductive electrolyte solution, the W-ELD based on “中國”-patterned MXene electrode can precisely reveal the encryption information through self-powered EL emission for real-time visualized information interaction. Consequently, the all-in-one MXene electrode-based W-ELD that integrates both MS-TENG and EL device demonstrates exceptional patterned EL-based information encryption features, which offers a potential prospect in wearable self-powered optoelectronic devices, flexible displays, and encryption technology.
研究领域:
材料科学
·
电子工程
·
信息安全
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 38
·18008-18018
·
IF 3.591
Onome Ejeromedoghene,Xiangyu Ma,Olayinka Oderinde,Fang Yao,Sheriff Adewuyi,Guodong Fu
A new quaternary type IV deep eutectic solvent (DES) was prepared for the synthesis of WO3/Nb2O5 complexes via a facile solvothermal route under ambient conditions. PXRD confirmed the formation of orthorhombic niobium tungsten oxide with semi-crystalline crystal phases. The SEM micrograph displayed a well aggregated and clustered particle distribution with irregular shapes, while TEM revealed a flower-shaped morphology of the materials. Furthermore, the UV-Vis measurements indicated electronic absorption in the range of 206–282 nm before irradiation with UV-light. After 5 s of irradiation, there was an instant color change from white to blue, which gradually deepened after 180 s. This color change was accompanied by a broad electronic absorption at 658 nm. Moreover, the intense photochromic material displayed fast fading within 20 min of exposure to the open air and remarkable recyclability. These observed properties could open new avenues for smart windows and color display devices.
研究领域:
材料科学
·
光化学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
Jieping Cao,Qi An,Zhenping Liu,Mingliang Jin,Zhibin Yan,Weijie Lin,Lin Chen,Pengfei Li,Xin Wang,Guofu Zhou,Lingling Shui
Droplet manipulation is a critical step for microfluidic applications. We present digital microfluidic devices based on electrowetting-on-dielectric (EWOD) for reliable and repeatable droplet manipulation. The EWOD device consists of two flexible conductive films as top and bottom electrodes, and one flexible liquid-infused membrane (LIM) as the hydrophobic insulating layer. LIMs made by infusing various fluids (air, fluorocarbon, silicone and hydrocarbon oils) into polytetrafluoroethylene (PTFE) membranes are evaluated by electrowetting performance of a sessile water droplet. Silicone oil is selected as the filling insulating oil according to its excellent electrowetting performance in good reversibility, low contact angle hysteresis, and negligible volatility. Fast (85 mm⋅s −1 ), repeatable (>5000 times without obvious decay) and continuous droplet (designed routes) moving, merging, mixing and positioning have been demonstrated. The factors affecting droplet transport velocity are investigated, including the infused oil viscosity, the conductive volume and the top-to-bottom gap distance. Both the conductive film and LIM are replaceable and robust, showing reliable and long-term stability. Quantitative chromogenic reactions and a flexible EWOD device are demonstrated. These devices are easy-to-fabricate, replaceable-in-material and robust-in-performance, showing high potential for applications in sample preparation, and flexible sensing and display devices.
研究领域:
微流控
·
材料科学
·
电化学
·
生物医学工程
·
柔性电子
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）