ACS Photonics
·
2025
·
IF 6.7
Ziqiang Wang,Na Meng,Yajing Li,Junhao Liu,Yutian Xu,Yuanhao Cui,Xinwu Ke,Xueli Li,Qiqi Zhao,Yulin Zhang,Yingdong Xia,Xue Min,Qingxun Guo,Yonghua Chen
Quasi-two-dimensional (quasi-2D) perovskite light-emitting diodes (PeLEDs) are promising candidates for next-generation display technologies due to their excellent optoelectronic properties. Thermal evaporation offers advantages such as large-area uniformity and facile pixelation, making it a scalable approach for device fabrication. However, the relatively low brightness and external quantum efficiency (EQE) of thermally evaporated quasi-2D PeLEDs remain key challenges. Here, we report high-brightness, fully thermally evaporated quasi-2D PeLEDs enabled by in situ defect passivation. PEABr is coevaporated with CsBr and PbBr2 to construct the quasi-2D structure, and triphenylphosphine oxide is introduced to suppress low-dimensional phases and reduce defect density. The resulting perovskite emission films exhibit enhanced uniformity and optoelectronic quality. The optimized devices achieve a record luminance of 127,144 cd m–2 and an EQE of 7.18%, representing the highest performance among thermally evaporated quasi-2D PeLEDs reported to date. These findings demonstrate the great potential of thermal evaporation for scalable, high-performance perovskite display technologies.
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-11
·
IF 15.7
Zhu Zhijie,Qian Shuairen,Dong Xudong,Liu Shuang,Zhou Yuxuan,Nie Kaiqi,An Xingda,Li Chaoran,Cheng Yi,Yan Binhang,Feng Kai,Zhang Xiaohong,He Le
Plasmonic photocatalysis offers a promising route to harvest solar energy and drive chemical reactions by the generated heat and energetic charge carriers towards a low-carbon economy. Understanding the mechanisms of plasmonic photocatalysis is vital for the rational design of efficient catalysts but remains a great challenge. Here we report the discovery of an overlooked photocatalytic mechanism based on the enhanced coverage of CO on an Au-Ni heterostructure under light. Detailed studies reveal that hot carrier transfer from Au to Ni via plasmonic excitation increases the electron density of Ni, thereby boosting the population of Ni sites capable of CO adsorption. This increase in active CO-binding sites, rather than local heating or altered adsorption properties of individual Ni sites, is found to be the major contributor to the light-promoted CH 4 production in the Au-Ni-catalyzed CO hydrogenation reaction. This mechanism is further validated by the observation of higher CH 4 selectivity in photocatalytic CO 2 hydrogenation. Our study deepens the mechanistic understanding of plasmonic photocatalysis and offers new ideas for the design of advanced catalytic structures.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Hao Jiang,Ying Yang,Jinge Jia,Yan Jiang,Hongwen Zhang
Light diffusion film is a functional optical material designed to transform intense and non-uniform light from point or line sources into uniformly distributed, soft, and glare-free surface illumination through the scattering effect of embedded diffusion particles. In this study, raspberry-like composite particles were synthesized via electrostatic adsorption between PMMA microspheres and nano-sized SiO 2 . These particles were subsequently blended with a polysiloxane-modified acrylic resin, diluted, and coated onto a polyethylene terephthalate (PET) substrate to fabricate a light diffusion coating. The surface morphology of the composite particles and the resulting diffusion film was characterized using scanning electron microscopy (SEM), polarized optical microscopy, and confocal laser scanning microscopy. Optical performance, including transmittance and haze, was evaluated using a transmittance/haze meter and a UV-visible spectrophotometer. Compared to the pristine PET substrate, which exhibited a transmittance of 89.2%, the optimized diffusion film—achieved at a 6 wt% loading of diffusion particles relative to the acrylic resin—demonstrated superior light diffusion properties with a transmittance of 80.2% and a haze of 91.0%. Furthermore, the underlying light diffusion mechanism was systematically investigated.
研究领域:
材料科学
·
光学材料
·
纳米技术
·
聚合物涂层
·
照明技术
✓ 已验证
产品关联
DOI
高影响因子
Physica Status Solidi-Rapid Research Letters
·
2025
·
IF 2
Hanguang Gou,Ding Huang,Qian Zhang,Xiaolong Liang,Weien Lai
In the era of artificial intelligence-driven information explosion, hybrid terahertz (THz) optical systems can play a pivotal role in multiple dimensional information transmission, which relies on high-performance THz modulators capable of multiwavelength optical excitation. Here, we present a multiwavelength light-driven broadband THz modulator based on manganese oxide nanoparticles (MnO NPs), exhibiting excellent broadband modulation within the frequency range of 0.1–1.6 THz and large modulation depth under different wavelength laser illumination at proper powers. The experimental results demonstrate that the THz modulator based on MnO NPs possesses superior compatibility and applicability compared with the traditional THz modulators. Based on the forward light scattering enhancement effect of the nanoparticles, the MnO NPs can effectively achieve light absorption enhancement at the interface between the nanoparticles and the silicon substrate, thereby significantly increasing the surface photoconductivity at the interface under optical excitation. Furthermore, the experimental results were effectively evaluated through numerical simulations within the framework of Drude model. Our work provides a compact and efficient solution for developing high-performance broadband THz modulators with large modulation depth and multiwavelength optical excitation, demonstrating the great potentials for advancing the next generation hybrid integrated THz optical systems.
研究领域:
太赫兹光子学
·
纳米材料
·
光电子学
·
集成光学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Yunhao Bao,Xiangrui Guo,Jiabao Zheng,Pinghou Sheng,Shilong Wang,Tianyi Wang,Yingcai Wu,Ziyuan Liu,Yun Ding
Color-changing materials make up a category of smart materials capable of exhibiting chromatic transitions in response to environmental stimuli. Certain thermochromic materials exhibit tunable optical transmittance during chromatic transitions, allowing for dynamic modulation of solar radiation in energy-efficient window applications. In this work, we develop a low-cost thermochromic poly(N-isopropylacrylamide)/carboxymethyl cellulose sodium/poly(ethylene glycol) (PCP) composite, achieving excellent light modulation and indoor temperature regulation capabilities. The introduction of CMC and PEG significantly enhanced the uniform dispersion of PNIPAM, thereby endowing the material with a highly efficient transition from transparent to opaque. Meanwhile, the results show that the PNIPAM/CMC/PEG smart window has high luminous modulation (ΔTlum = 99.20%) with approximately 100% luminous transmission (Tlum = 99.29%) at 25 °C and approximately 0% transmission (Tlum = 0.09%) at 35 °C. Additionally, the smart window demonstrated long-term stability in dynamic transparent–opaque transitions and a low transition temperature of 30.9 °C. Therefore, the proposed composite presents several advantages, including high efficiency, low cost, and easy scalability, offering new insights into the design and fabrication of smart windows and other smart materials.
研究领域:
材料科学
·
智能材料
·
节能建筑
·
聚合物复合材料
·
光学器件
✓ 已验证
产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2021
·Vol. 23
·期 19
·3488-3497
·
IF 3.545
Panbing Hu,Yanmei Xin,Congfei Yao,Yuqing Miao
In2S3/BiOI composites were synthesized at room temperature which significantly improved the photocatalytic degradation of tetracycline hydrochloride (TC) under visible light irradiation. Structure and morphology characterization techniques have been performed by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction measurements (XRD) and X-ray photoelectron spectra (XPS). The separation ability of photogenerated carriers is enhanced due to the formation of heterojunctions of the composites. The best performance is obtained when the content of In2S3 is 7 wt%. Compared with In2S3 and BiOI alone, 7-In2S3/BiOI has the highest specific surface area and can provide more active sites. Based on the photo-electrochemical characterization and free radical tests, a photocatalytic mechanism of In2S3/BiOI composites in the presence of superoxide radicals (˙O2−) and holes (h+) is reasonably proposed.
研究领域:
材料科学
·
环境科学
·
光催化技术
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Xiangxiao Qiu,Jifeng Li,Zhanqing Liu
Earlier investigations have shown that corrosion products of weathering steel presented photovoltaic effect under illumination. In this study, we explored the influence of chloride ions on this effect and the related corrosion behavior. Open circuit potential, electrochemical impedance spectroscopy and Mott- Schottky plots were recorded on weathering steel surface treated with NaCl after 3 days exposure in simulated atmospheric condition under illumination. For comparison, similar study was also performed on the weathering steel surface without NaCl deposition. There was clearly photoelectrochemical response difference between the samples. It was found that the defects concentration and electric conductivity of the corrosion products were higher due to the chloride ions migration, which was promoted by incorporation of photo-generated holes under illumination. The detailed mechanism was discussed in this study.
研究领域:
材料科学
·
电化学
·
腐蚀工程
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2020
·
IF 7.632
Shuhui Wang,Jiawei Zhan,Kui Chen,Asad Ali,Linghui Zeng,He Zhao,Wanglai Hu,Lixin Zhu,Xiaoliang Xu
The visible-light-driven CO2 reduction efficiency is largely restrained by the negative photoabsorption and high recombination rate of electron–hole pairs. It is an effective method to increase the efficiency of CO2 photoreduction by doping alkali metal elements to engineer the electronic properties of the catalyst. Here, we report a new study on the potassium-doped g-C3N4 (K-CN) being used for CO2 reduction irradiated by visible light. DFT calculations and XPS tests show that the potassium doping is interlayer doping, changing the electronic structure of g-C3N4. The higher ID/IG value indicates more structural distortion and defects caused by K doping. K-CNs have enhanced visible-light absorption, and PL spectra demonstrate that the introduction of potassium advances the separation and transmission of photoexcited charge carriers, further confirmed by transient photocurrent response experiment. Under visible light, K-CN-7 achieved efficient CO2 reduction without any noble metal as a cocatalyst, with CO formation rates of 8.7 μmol g–1 h–1, which is 25 times that of ordinary g-C3N4. Our work further validates the importance of inhibiting e–/h+ recombination in improving solar energy conversion efficiency while also bringing hope for efficient solar fuel production using g-C3N4.
研究领域:
材料科学
·
能源化学
·
环境科学
✓ 已验证
DOI
高影响因子
NANOTECHNOLOGY
·
2020
·Vol. 31
·期 24
·245001
·
IF 3.551
Hetong Qi,Xuemei Wu,Hengqi Zhang,Yuhai Tang,Hongfang Gao,Manping Qian,Honglan Qi
Multiple-color emissive carbon dots (C-dots) are gaining increasing attention in various fields. Herein, we report a facile solvothermal method for the synthesis of multiple-color emissive C-dots with the aim of white-light emission. Under single ultraviolet-light excitation, three C-dots emit a easily controlled fluorescent emission wavelength at 440 nm, 500 nm and 610 nm by using different three amines (either ammonium hydroxide, ethylenediamine or p-phenylenediamine, respectively) and pyromellitic dianhydride as molecular precursors while another three C-dots emit a controllable fluorescent emission wavelength at 500 nm, 550 nm and 585 nm by using same three amines and naphthalene-1,4,5,8-tetracarboxylic dianhydride as molecular precursors. The maximum fluorescence wavelength of these C-dots is red-shifted by changing three different amines molecular precursors from ammonium hydroxide, ethylenediamine, to p-phenylenediamine. Furthermore, these C-dots have shown promising applications in the fields of white-light-emitting diodes devices and color printing.
研究领域:
材料科学
·
光学
·
纳米技术
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
Jinjin Zhang,Luyang Wei,Xiuxia Meng,Fangyong Yu,Naitao Yang,Shaomin Liu
Digital light processing (DLP)-stereolithography three-dimensional (3D) printing is a well known technique for fabricating components with complex geometries. However, the application of DLP 3D printing to functional ceramics such as 8 mol% yttria-stabilized zirconia (8YSZ), which is one of the most extensively used electrolyte materials for solid oxide fuel cells, is still a great challenge. Therefore, the fabrication of fully 8YSZ monoliths via DLP 3D printing was attempted herein, including the preparation of UV-curable ceramic suspensions, shaping of green bodies, and debinding and sintering. The results show that intact green bodies printed using a 30 vol% 8YSZ-photosensitive resin suspension with 0.1 wt% oleic acid as the dispersant under the optimized printing conditions was sufficiently dense without connected pores after vacuum debinding and sintering in air. The successful fabrication of 8YSZ monoliths with design flexibility via 3D printing provides a simple method for preparing functional ceramic components and may expand the application of 3D printing technology to the energy field.
研究领域:
材料科学
·
增材制造
·
陶瓷
·
能源材料
✓ 已验证
DOI
高影响因子
MATERIALS & DESIGN
·
2023
·
IF 8.4
Xu Li,Chunfeng Wang,Yuantian Zheng,Zefeng Huang,Jiangcheng Luo,Mingju Zhu,Tianlong Liang,Biyun Ren,Xianhui Zhang,Dong Wang,Zhanbing Ren,Sicen Qu,Wei Zheng,Xiaoyan Wei,Dengfeng Peng
Mechanoluminescence (ML) materials, which directly convert mechanical energy into light emission, have emerged as an emerging class of light-emitting materials with various applications. Although significant progress has been made in the development of new ML materials and devices, their practical application is limited by their low intensity and homogenously structured host structures. Thus, multiple-structured host ML materials with high ML intensity and reproducibility are needed, particularly for wearable and printable ML light sources with high brightness. In this study, various Mn-doped ternary heterojunction ML materials, CaZnOS-ZnS-SrZnOS, are synthesised by high-temperature solid-phase reactions, and their luminescence properties are systematically tested. The result indicates that the ternary heterojunction materials have a higher ML intensity over 60 times stronger than the state-of-art SrZnOS: Mn 2+ , which is currently the brightest sample we have obtained. ML linearly depends on the magnitude of the applied force. Based on the synthesised ternary ML heterojunctions, repetitive self-driving luminescence of the zipper is achieved for the first time through powder modification and inlay; the clothes composed of our prepared zippers are pulled and bent when worn on the body to emit bright visible light. Additionally, a Velcro that can achieve light emission is developed; it provides a new idea for the development of wearable flexible self-luminous devices in the future. Simultaneously, movement-driven stress luminous printable objects that can be printed on the surface of various commodities or their packaging are demonstrated. The preparation of self-driven, battery-free, and electrode-free stress luminescence wearable low light sources has an important application trend, which can avoid the interference of the circuit and improve the stability of the devices, thus promising a wide range of applications in smart wear, energy-saving displays, safety and rescue, robotic skin, and information security.
研究领域:
材料科学
·
光学
·
纳米技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Lin Li,Dawei Tang,Yongchen Song,Bo Jiang
Optofluidic microreactors are promising platform for photocatalytic reactions. However, the light transmission phenomenon is serious in optofluidic microreactors which makes a part of solar energy lose in surroundings. To resolve this problem, in this work, a novel dual-film optofluidic microreactor is proposed and fabricated by immobilizing TiO 2 nanorod arrays on both the top and bottom internal wall of the microchamber. Such dual-film structure enables the transmitted light to be utilized by the bottom TiO 2 film instead of being wasted, thus improving the light-harvesting capacity of optofluidic microreactor. Moreover, TiO 2 nanorod arrays are employed as the photocatalytic film in this optofluidic microreactor to enlarge the specific surface area and facilitate the mass transfer. The photocatalytic performance and the kinetic properties of the dual-film optofluidic microreactor are evaluated by photocatalytic degradation of methylene blue. Results show that the proposed dual-film optofluidic microreactor yielded much higher degradation efficiency than the conventional one as a result of enhanced light-harvesting and improved mass transfer. In addition, the long-term testing proves that the durability of the dual-film optofluidic microreactor can be improved by operating it in a periodically rotated manner. In short, the TiO 2 nanorod arrays-based dual-film optofluidic microreactor exhibits efficient light-harvesting and high durability and shows promising potential for photocatalytic applications.
研究领域:
化学工程
·
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）