Advanced Optical Materials
·
2025
·
IF 7.2
Zixi Hu,Luyao Zhan,Yingying Zhang,Luping Sun,Xingchi Wang,Yongkun Liu,Haitao Ma,Mei Wang,Bin Ding,Ying Ma,Jianyong Yu
Electrochromic fibers adept at miniaturization and seamless integration with the soft and dynamically deformed human body, emerge as promising frontrunners in smart displays as a new form of wearable visual output devices. However, it remains a huge challenge to simultaneously achieve conformal smart fibers with various colors, desirable color-changing performance, reliable mechanical properties, and a simple preparation procedure for intelligent display of complex information during a human-machine interface. Herein, full-color electro-thermochromic fluorescent fibers with fast response (<1 s), off–on switching luminescence, good reversibility (>50 cycles), and programmable control, are developed on the basis of self-crystallinity phase changes and Förster resonance energy transfer; and performed self-adaptive intelligent display (≈2 s) of multi-targets in dynamic environments with the assistance of deep learning, by using a wearable textile display system as an example implementation. The work unifies deep learning and smart fibers to make it possible for bio-inspired self-adaptive ability, in which the dynamic targets encompass a diverse array of morphological entities, extending even to stimuli like light, scent, temperature, and humidity. This self-adaptive intelligent display fiber presents unprecedented opportunities for next-generation wearable electronics and systems, fostering seamless communication and adaptability within dynamic environments.
研究领域:
材料科学
·
人工智能
·
纺织工程
·
生物启发技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Yihang Chen,Xiao Yang,Xiaotong Fan,Ao Kang,Xuemin Kong,Guolong Chen,Chenming Zhong,Yijun Lu,Yi Fan,Xu Hou,Tingzhu Wu,Zhong Chen,Shuli Wang,Yue Lin
Perovskite nanocrystal (PeNC) arrays are showing a promising future in the next generation of micro-light-emitting-diode (micro-LED) displays due to the narrow emission linewidth and adjustable peak wavelength. Electrohydrodynamic (EHD) inkjet printing, with merits of high resolution, uniformity, versatility, and cost-effectiveness, is among the competent candidates for constructing PeNC arrays. However, the fabrication of red light-emitting CsPbBrxI(3–x) nanocrystal arrays for micro-LED displays still faces challenges, such as low brightness and poor stability. This work proposes a design for a red PeNC colloidal ink that is specialized for the EHD inkjet printing of three-dimensional PeNC arrays with enhanced luminescence and stability as well as being adaptable to both rigid and flexible substrates. Made of a mixture of PeNCs, polymer polystyrene (PS), and a nonpolar xylene solvent, the PeNC colloidal ink enables precise control of array sizes and shapes, which facilitates on-demand micropillar construction. Additionally, the inclusion of PS significantly increases the brightness and environmental stability. By adopting this ink, the EHD printer successfully fabricated full-color 3D PeNC arrays with a spatial resolution over 2500 ppi. It shows the potential of the EHD inkjet printing strategy for high-resolution and robust PeNC color conversion layers for micro-LED displays.
研究领域:
材料科学
·
显示技术
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2017
·
IF 6.216
Sai Lin,Mengyuan Chen,Ziwei Wang,Yijun Zhang,Rongrong Yuan,Xiaojuan Liang,Weidong Xiang,Yongqiang Zhou
Multicolor luminescent carbon dots (Cdots) are of immense importance nowadays, while it still a challenge to construction of full-color light-emitting Cdots and their efficient solid-state materials. Here in, we fabricated a facile method to synthesize multicolor Cdots by adjustment of the reaction temperature. Although all samples showed uniform distribution of particles size and similar graphite structure, the surface chemical composition gradually varied among Cdots, especially the oxygen contents and nitrogen contents. Detailed material characterization has revealed that this tunable emission is results from the changes of the chemical composition. It is believed that the surface oxidation become more severe at high temperature, resulting in the formation of higher oxygen and nitrogen, which are responsible for the long-wavelength emission. Meanwhile, flexible solid-state materials were successfully created by combination of organosilane (OSi) and Cdots, which can be used to prevent the aggregation-induced solid-state fluorescence quenching. Finally, red Cdots/OSi was stacked on the Y 3 Al 5 O 12 :Ce 3+ (Ce 3+ : YAG) phosphor-in-glass (Ce-PiG) via tape-casting technology. Then, warm white light-emitting diodes (WLEDs) were constructed by these materials and GaN chips. As the Cdots increases, the correlated color temperature (CCT) decreases while the color rendering index (CRI) increases, and the color coordinates shift towards the red region. The resulting color converting material produced a warm white by adjusting red Cdots content, which will be a promising candidate for applications in the warm WLED.
研究领域:
材料科学
·
光电技术
·
纳米技术
·
照明工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Jingling Li,Zheng Liang,Qiucheng Su,Hu Jin,Kelai Wang,Gang Xu,Xueqing Xu
For an organic–inorganic hybrid quantum dot light-emitting diode (QD-LED), enhancing hole injection into the emitter for charge balance is a priority to achieve efficient device performance. Aiming at this, we employ N,N′-bis(3-methylphenyl)-N,N′-bis(phenyl)benzidine (TPD) as the additional hole transport material which was mixed with poly(9-vinylcarbazole) (PVK) to form a composite hole transport layer (HTL) or was employed to construct a TPD/PVK bilayer structure. Enabled by this TPD modification, the green QD-LED (at a wavelength of 515 nm) exhibits a subband gap turn-on voltage of 2.3 V and a highest luminance up to 56 157 cd/m2. Meanwhile, such TPD modification is also beneficial to acquire efficient blue and red QD-LEDs. In particular, the external quantum efficiencies (EQEs) for these optimized full-color QD-LEDs are 8.62, 9.22, and 13.40%, which are 3–4 times higher than those of their pure PVK-based counterparts. Revealed by the electrochemical impedance spectroscopy, the improved electroluminescent efficiency is ascribable to the reductions of recombination resistance and charge-transfer resistance. The prepared QD-LEDs surpass the EQE values achieved in previous reports, considering devices with small-molecule-modified HTLs. This work offers a general but simple and very effective approach to realize the low turn-on-voltage, bright, and efficient full-color QD-LEDs via this solution-processable HTL modification.
研究领域:
材料科学
·
光电技术
·
半导体器件
·
光子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Optical Materials
·
2025
·
IF 7.2
Ke Chen,Yue Liu,Xiaokun Wang,Peiyu Liu,Chuyue Lei,Yuanyuan Zheng,Duo Li,Jingxia Wu,Bingjie Wang,Xuemei Sun,Peining Chen,Huisheng Peng
Textile displays—renowned for inherent flexibility and breathability—have emerged as a transformative platform for next-generation wearables and IoT integration. Despite substantial advancements, achieving dynamically tunable color display remains a critical challenge for effective information interaction. Here, this limitation is addressed through a woven architecture that integrates luminescent warp fibers with light-conversion conductive weft fibers, creating a three-primary-color electroluminescent pixel array where each unit contains precisely arranged red (R), green (G), and blue (B) interlaced subpixels. These subpixels demonstrate exceptional spectral purity with full-width at half-maximum values as low as 37 nm—comparable to quantum dot light-emitting diodes. The resultant pixel units achieve full-color display with a color gamut covering 122% of the sRGB standard, representing a 344% enhancement over conventional alternating current electroluminescence devices. Standard-like white light emission is achieved through precise control of RGB luminance ratios. A 5 × 5 cm 2 prototype textile display demonstrates multicolored text/image displaying via row scanning driving circuitry, while system-level integration with fiber biosensors enables health monitoring through color-coded heart rate visualization. This textile display is stable and durable to withstand 1,000 cycles of deformations like bending, stretching, twisting, and pressing. This work establishes a material-to-system framework for seamlessly embedding color displays into textiles.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·Vol. 34
·期 44
·2404439
·
IF 18.5
Sheng Zhang,Xiuxia Yang,Jianqiang Xiao,Xin Li,Qingpeng Peng,Siyuan Luo,Huaiqiang Ba,Yu Zhang,Xuhui Xu
Mechanoluminescence (ML) with the unique mechanical-to-optical energy conversion attracts wide attention for stress sensing. However, the development of ML materials is primarily based on crystalline material due to the crystal structure can provide an appropriate crystal field environment for emission center, which limits the expansion of ML materials and affects the deeper understanding of ML mechanism. Herein, the tunable full-color ML can be achieved in transparent amorphous glass system. The rare earth-doped transparent amorphous glass can produce ML under stress stimulations when in direct contact with polydimethylsiloxane (PDMS) or mixed with PDMS to prepare the ML elastomers. Based on the excellent ML performance of amorphous glass, an advanced device regarding the visualized detection of automotive brake tribo-force has been developed. The findings provide profound insights into the triboelectric potential induced ML phenomenon, which offers the guiding significance in the mechanics-related visualized detection and the design of multi-color ML materials in the future.
研究领域:
材料科学
·
光学
·
力学
·
智能材料
·
传感器
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Peiyu Tan,Dengfeng Ren,Yuge Han
Intercalation-based organic polymers that shift their colors during ion insertion and extraction provide a significant basis for existing electrochromic technology. Nevertheless, the complexity of modifying the structure in the skeleton or combining several diverse polymers to produce a full-color range has restricted the practical applications of electrochromic materials. Herein, we demonstrate two configurations of the poly(3,4-ethylenedioxythiophene) (PEDOT) Fabry–Perot (F–P) nanocavity-type electrochromic devices fabricated by spray coating lossless PEDOT on the F–P metasurfaces (Cr/ITO/Ag/Cr), which allows full-color response by simply controlling the thickness of dielectric layer indium tin oxide (ITO). However, the reflected light from the PEDOT F–P nanocavity-type electrode can be modulated by electrically controllable optical absorption of PEDOT. Besides, the subtle brightness regulation could be obtained in our F–P nanocavity electrochromic devices via altering the PEDOT thickness. Overall, our results offer a novel perspective for versatile color control of PEDOT.
研究领域:
材料科学
·
光电子学
·
纳米技术
✓ 已验证
DOI
高影响因子
Advanced Optical Materials
·
2022
·Vol. 10
·期 12
·2200087
·
IF 10.05
Wenhao Bai,Tongtong Xuan,Haiyan Zhao,Shuchen Shi,Xiaoyu Zhang,Tianliang Zhou,Le Wang,Rong-Jun Xie
Group III–V semiconductor-based microscale light-emitting diode (micro-LED) displays are recognized as one of the most promising display technologies with superhigh brightness and resolution, strong contrast, and superlarge color gamut but currently suffer from low efficiency, low production yield, and high cost. Here, it is proposed to realize cost-effective and full-color micro-LED displays by using microscale perovskite quantum dot LEDs (micro-PeLEDs) as emitters. Bright and uniform red-, green-, and blue-emitting (RGB) micro-PeLED arrays with each pixel size as small as 45 µm are fabricated by in situ inkjet printing a perovskite quantum dot (PeQD) emissive layer in the structure of indium tin oxide/poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS)/poly(9-vinylcarbazole) (PVK)/sodium dodecyl sulfate (SDS)/PeQD/1,3,5-tris(1-phenyl-1 H -benzimidazol-2-yl)benzene (TPBi)/LiF/Al. These RGB micro-PeLED arrays display an external quantum efficiency of 0.832%, 0.419%, and 0.052% for red, green, and blue colors, a resolution of 210 PPI, and a wide color gamut (135% of the National Television Standards Committee standard). The authors further demonstrate flexible and full-color active-matrix micro-PeLED displays, which have potential applications in future ultrahigh-definition displays, light communication, and artificial intelligence.
研究领域:
显示技术
·
材料科学
·
纳米技术
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
Science Advances
·
2022
·Vol. 8
·期 8
·
IF 14.957
Dan Li,Jie Yang,Manman Fang,Ben Zhong Tang,Zhen Li
Achieving stimulus-responsive ultralong room temperature phosphorescence (RTP) in organic materials especially with full-color tunable emissions is attractive and important but rarely reported. Here, a strategy was reported to realize stimulus-responsive RTP effect with color-tunable emissions by using water as solvent in the preparation process without any organic solvent through covalent linkage of arylboronic acids with different π conjugations and polymer matrix of polyvinyl alcohol. The yielded polymer films exhibit outstanding RTP performance (2.43 s). Furthermore, an excitation-dependent RTP film was obtained, and the afterglow color changes from blue to green, then to red as the excitation wavelength increases. The RTP property of all the above materials is sensitive to water and heat stimuli, because the rigidity of the system could be broken by water. Last, they were successfully applied in a multilevel information encryption and multicolor paper and ink.
研究领域:
材料科学
·
光学材料
·
高分子科学
·
刺激响应材料
·
磷光
·
信息安全
✓ 已验证
DOI
高影响因子
Journal of Materiomics
·
2023
·
IF 9.4
Jia Liu,Hailong Yu,Guan Wang,Shuang Yang,Meichen Li,Xin Zhang,Yang Jia,Yachen Gao
Here, nitrogen-doped carbon quantum dots (N-CQDs) were successfully synthesized by the solvothermal method using graphite as the carbon source and N,N-dimethylformamide as the nitrogen source. We characterized the structure and chemical constitution of N-CQDs using X-ray diffraction, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. We investigated the pump- and temperature-dependent photoluminescence (PL) properties and the dynamic exciton recombination processes of N-CQDs, using both steady-state and time-resolved PL techniques. The spectral results show that the PL emission peak located at 518 nm at room temperature, mainly originates from the n-π ∗ transition on the surface of N-CQDs. The pump fluence and PL integral intensity were analyzed to demonstrate the existence of single-photon excitation under the 405 nm laser excitation. As the temperature increases, the non-radiative transition gradually increases, which decreases the PL intensity, the full width at half maxima first narrows and then widens and the PL lifetime gradually decreases. Furthermore, we combined the N-CQDs with chip to prepare light-emitting diode (LED). The resulting chromaticity coordinate was obtained to be (0.29, 0.40). This study offers a comprehensive understanding of the luminescence mechanism in N-doped CQDs and introduces a novel approach for the quickly fabrication of full-color display LEDs.
研究领域:
材料科学
·
光电技术
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-10
·
IF 14.7
Mu Bin,Hao Xiangnan,Luo Xiao,Yang Zhongke,Lu Huanjun,Tian Wei
Light-harvesting is an indispensable process in photosynthesis, and researchers have been exploring various structural scaffolds to create artificial light-harvesting systems. However, achieving high donor/acceptor ratios for efficient energy transfer remains a challenge as excitons need to travel longer diffusion lengths within the donor matrix to reach the acceptor. Here, we report a polymeric supramolecular column-based light-harvesting platform inspired by the natural light-harvesting of purple photosynthetic bacteria to address this issue. The supramolecular column is designed as a discotic columnar liquid crystalline polymer and acts as the donor, with the acceptor intercalated within it. The modular columnar design enables an ultrahigh donor/acceptor ratio of 20000:1 and an antenna effect exceeding 100. Moreover, the spatial confinement within the supramolecular columns facilitates control over the energy transfer process, enabling dynamic full-color tunable emission for information encryption applications with spatiotemporal regulation security.
研究领域:
材料科学
·
光化学
·
纳米技术
·
光电
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Po Hu,Shuai Zhou,Yang Wang,Jianhua Xu,Sa Zhang,Jiajun Fu
The luminescent self-healing materials have a significant prospect in optical device applications such as biosensing, multicolor displays, and high-level anti-counterfeiting. Herein, a novel printable, room-temperature self-healing and full-color-tunable luminescent composites were developed through the noncovalent binding of physically cross-linked p(HFBM- co -SBMA)/EMITFSI and excitation-orthogonalized RGB-switchable UCNPs. According to a strategy of Selective photon capture (SPC), the RGB-switchable core-sextuple-shell UCNPs were first established for red/green/blue-switchable luminescence under three different excitations (980/808/1550 nm) and even full-color output through the combination of 980/808/1550 nm light. The copolymer p(HFBM- co -SBMA), pre-synthesized via free radical polymerization, was incorporated with ionic liquid EMITFSI to formulate room-temperature self-healing material owing to ion–dipole interactions between EMITFSI and p(HFBM- co -SBMA). Afterward, the integration of 30 wt% EMITFSI copolymer and fluothane-modified UCNPs resulted in the formation of the final full-color-tunable luminescent self-healing composites, which not only exhibited superior Young’s modulus and healing efficiency than some previously reported room-temperature self-healing materials, but also realized full-color-tunable emissions under ternary 980/808/1550 nm excitations. Significantly, the luminescent self-healing composites, which also exhibited colorless character and high transmittance, could be employed as printable inks for making various luminescent patterns (including clock, flower, and QR code) on flexible substrates via convenient and cost-effective screen-printing technique. As the results of proofs of concept, these luminescent patterns displayed fantastic viewing capability and highly secured property, which showed enormous potential of the proposed luminescent self-healing composites in flexible panchromatic display and high-security-level anti-counterfeiting. To our knowledge, this work provides the strategy for constructing full-color-tunable self-healing luminescent composites for the first time. Undoubtedly, the well-designed luminescent self-healing materials will provide new insights and guidance for exploiting the new generation of flexible optical devices, especially multicolor displays and anti-counterfeiting devices.
研究领域:
材料科学
·
光学
·
纳米技术
·
显示技术
·
防伪技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）