InfoMat
·
2024
·Vol. 6
·期 7
·e12547
·
IF 22.7
Haisheng Chen,Jiaying Shen,Xiaona Du,Songhua Cai,Feng Guo,Weng Fu Io,Tianhong Zhou,Zhengang Dong,Taiyu Bian,Jiaxing Guo,Weiwei Liu,Yang Zhang,Zhenping Wu,Jianhua Hao
Modulation of light underpins a central part of modern optoelectronics. Conventional optical modulators based on refractive-index and absorption variation in the presence of an electric field serve as the workhorse for diverse photonic technologies. However, these approaches based on electro-refraction or electro-absorption effect impose limitations on frequency converting and signal amplification. Lanthanide-activated phosphors offer a promising platform for nonlinear frequency conversion with an abundant spectrum. Here, we propose a novel approach to achieve frequency conversion and digital modulation of light signal by coupling lanthanide luminescence with an electrically responsive ferroelectric host. The technological benefits of such paradigm-shifting solution are highlighted by demonstrating a quasi-continuous and enhancement of the lanthanide luminescence. The ability to locally manipulate light emission can convert digital information signals into visible waveforms, and visualize electrical logic and arithmetic operations. The proof-of-concept device exhibits perspectives for developing light-compatible logic functions. These results pave the way to design more controllable lanthanide photonics with desired opto-electronic coupling.
研究领域:
光学
·
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
Nano Energy
·
2019
·
IF 15.548
Bangsen Ouyang,Cheng Chang,Li-Dong Zhao,Zhong Lin Wang,Ya Yang
Self-powered photodetectors (PDs) have attracted great attentions due to energy shortage and the upcoming internet of things . However, the bottleneck of traditional methods to enhance the output performances of self-powered PDs are largely limited. Here, we report a dramatic coupling enhancement ("1 + 1>2") of the output signals in a bromine doped tin selenide (SnSe:Br) single crystal due to the thermo-photoelectric coupled effect for enhanced self-powered PDs. As compared with that of individually illuminating the device, both the output current and voltage signals of the PD can be enhanced by 38.1% and 81.9% under the simultaneous illumination at the top surface and cooling at the bottom surface, respectively. The coupling enhancement mechanism is associated with the same polarities of photoelectric and thermoelectric signals during the cooling process, where the photo-generated electrons can be accelerated by the driving force of the thermoelectric field under the cooling condition. This work offers a novel approach to enhance the output performances of self-powered PDs.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Physics
·
2025
·
IF 9.7
Zhongming Song,Guodong Liu,Tianhao Wang,Jiahao Wu,Hanbin Liu,Zhijian Li
In this study, we present a novel method for fabricating flexible transparent paper substrates via epoxy resin impregnation and coating, which exhibit high transparency (90.98 %) and desirable haze (41.5 %). In this method, the epoxy resin with a refractive index close to that of cellulose fibers, is employed to effectively fill the porous structure of the paper substrate, significantly enhancing the transparency of the substrate while maintaining an appropriate haze. This not only allows for more light transmission but also facilitates light absorption and scattering at wide angles, improving the optical coupling efficiency for light-emitting devices. Additionally, the fibers in the substrate provide the skeletal structure, whilst the fiber encapsulation by the epoxy enhances the mechanical properties and chemical stability of the substrate. Simultaneously, due to the interfacial interlocking and hydrogen bonding of the conductive PEDOT:PSS spin-coated with its interacting substrate, it forms a flexible PEDOT:PSS electrode having stable physical and chemical performance. Finally, based on the excellent optical and mechanical properties of the prepared substrate, we successfully fabricate light-emitting electrochemical cells (LECs) through an all-solution processing method under ambient conditions. The LECs on the transparent paper substrate achieve superior maximum luminance ( L max = 1082.4 cd m −2 ) and current efficiency ( CE max = 1.14 cd A −1 ), surpassing those of devices prepared on conventional PET. This work proposes a novel method for the preparation of a low-cost and high-performance substrate.
研究领域:
材料科学
·
光学工程
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2023
·Vol. 35
·期 39
·2302283
·
IF 29.4
Wenhao Bai,Tongtong Xuan,Haiyan Zhao,Haorui Dong,Xinru Cheng,Le Wang,Rong-Jun Xie
Perovskite light-emitting diodes (PeLEDs) are strong candidates for next-generation display and lighting technologies due to their high color purity and low-cost solution-processed fabrication. However, PeLEDs are not superior to commercial organic light-emitting diodes (OLEDs) in efficiency, as some key parameters affecting their efficiency, such as the charge carrier transport and light outcoupling efficiency, are usually overlooked and not well optimized. Here, ultrahigh-efficiency green PeLEDs are reported with quantum efficiencies surpassing a milestone of 30% by regulating the charge carrier transport and near-field light distribution to reduce electron leakage and achieve a high light outcoupling efficiency of 41.82%. Ni 0.9 Mg 0.1 O x films are applied with a high refractive index and increased hole carrier mobility as the hole injection layer to balance the charge carrier injection and insert the polyethylene glycol layer between the hole transport layer and the perovskite emissive layer to block the electron leakage and reduce the photon loss. Therefore, with the modified structure, the state-of-the-art green PeLEDs achieve a world record external quantum efficiency of 30.84% (average = 29.05 ± 0.77%) at a luminance of 6514 cd m −2 . This study provides an interesting idea to construct super high-efficiency PeLEDs by balancing the electron-hole recombination and enhancing the light outcoupling.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2024
·
IF 15.7
Jiali Liu,Huicong Dai,Xin Liu,Yiqi Ren,Maodi Wang,Qihua Yang
Biocatalytic reduction is extensively employed in chemical and pharmaceutical industries due to its notable advantages including high activity, selectivity and mild reaction conditions, however, the stoichiometric use of the expensive NADH (reduced form of nicotinamide adenine dinucleotide) hinders its widespread application. Despite the persisting challenges of low charge separation efficiency and limited solubility of organic substrates in aqueous phase, in situ photocatalytic NADH regeneration remains a promising solution. Herein, we report the construction of an enzyme-photo-coupled catalytic system in Pickering emulsion droplet, which was stabilized by a charge separation and transfer modulated photocatalyst. The photocatalyst integrated with visible light driven conjugated polymer, TiO 2 and electron mediator greatly enhanced the cascade electron transfer from photocatalyst to NAD + . Consequently, NADH production rate over the integrated photocatalyst reaches as high as 2.4 mmol·g −1 ·h −1 under visible light irradiation, 12 folds higher than the corresponding physical mixture. Furthermore, the enzyme-photo-coupled catalytic system was constructed with alcohol dehydrogenase/NAD + confined in the emulsion droplet and photocatalyst assembled at the oil-water interface. The photoactive emulsion continuously catalyzed the n -butyaldehyde reduction to accumulate 16.1 mmol·L −1 butanol, equivalent to 14 cycles for NADH regeneration under visible light irradiation. The primary result demonstrates the potential application prospect of Pickering emulsion in enzyme-photo-coupled catalysis due to the facilitated charge transfer from photocatalyst to NAD + and fast mass diffusion attributed to the large interfacial area of water and oil.
研究领域:
催化
·
化学工程
·
生物技术
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Chenxin Hou,Yan Chu,Jinlei Zeng,Yitong Wang,Ganlu Li,Kequan Chen,Hui Li
Global output of bio-based products continues to increase, but the release of carbon dioxide (CO 2 ) has exacerbated the environmental crisis. The simultaneous conversion of CO 2 released by bioprocesses into high-value products is increasingly gaining attention. With this in mind, a compartmentalized photocoupling multi-enzyme nanoreactor consisting of two nanocompartments was created. This nanoreactor uses a ferric tannin-gelatin (TA-Gel) coacervate to synchronously wrap nanocompartment I, which quickly sequesters the CO 2 released by biodecarboxylation to prevent its loss, and nanocompartment II, which converts the sequestered CO 2 into formic acid. The results indicate that nanocompartment I and II were encapsulated in the nanoreactor with high catalytic efficiency. Under the optimal conditions, the yields of pentanediamine and formic acid reached 15.7 ± 1.06 and 8.4 ± 0.07 mM, respectively. Yields of pentanediamine and formic acid by the photocoupling multi-enzyme nanoreactor were highest. The conversion efficiency of formic acid from CO 2 released by biodecarboxylation by the photocoupling multi-enzyme nanoreactor, mixed nanocompartments, and free one-pot multi-enzyme system was 54.5 %, 43.8 %, and 10.0 %, respectively. The proximity effect significantly promotes the catalytic efficiency of formic acid synthesis from CO 2 released by biodecarboxylation. The novel photocoupling multi-enzyme nanoreactor has important capabilites for upgrading multi-enzyme programmed catalysis.
研究领域:
生物技术
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Luyang Zuo,Huan Yang,Huirong Li,Yiwen Zhang,Linmei Gao,Yuxin Zhang,Fang Wang
Magneto–photo coupling offers a promising strategy to enhance the oxygen evolution reaction (OER) for efficient energy conversion. Here, a synergistic approach that integrates an external magnetic field with visible-light irradiation to regulate the electronic structure of hollow NiCo 2 O 4 microboxes is demonstrated. The unique hollow cubic architecture, assembled from 2D nanosheets, ensures abundant active sites and robust structural stability. Magnetic stimulation induces non-collinear spin reorientation and enhanced spin polarization, increasing the electronic density of states near the Fermi level to facilitate charge transport and optimize intermediate adsorption. Concurrently, light irradiation generates photocarriers that accelerate charge separation and reaction kinetics. Benefiting from this synergy, the catalyst delivers a 204.4 mV reduction in overpotential at 10 mA·cm −2 and a 115.8 mV·dec −1 improvement in Tafel slope, demonstrating superior activity and long-term stability. First-principles calculations confirm that the cooperative effect of magnetic and light fields optimizes intermediate adsorption and reduces energy barriers, thereby accelerating OER kinetics. This study highlights the unique advantages of magneto–photo coupling in electrocatalysis and provides insights into designing responsive catalysts and advancing multi-field coupling strategies for next-generation electrochemical energy technologies.
研究领域:
电催化
·
材料科学
·
能量转换
·
纳米材料
·
多场耦合
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Huiru Zhang,Lulu Liu,Hao Zhang,Yinhua Wan,Jianquan Luo
Inspired by the photo-enzyme-coupled catalytic system in chloroplasts, we developed a composite catalyst with both photocatalytic and biomimetic catalytic activity for H 2 O 2 production by loading gold nanoparticles (AuNPs, enzyme mimics) on graphite carbon nitride (GCN, photocatalyst) nanosheets using polyethyleneimine (PEI) as the “bridge”. The introduction of PEI and AuNPs can adjust the electronic structure of GCN, facilitating the rapid separation of photogenerated carriers. Moreover, surface plasmon resonance of AuNPs excited by incident light promotes the activation of glucose molecules, elevating their reactivity with O 2 , thereby improving the glucose oxidase-mimicking catalytic production of H 2 O 2 . Furthermore, the grafting of PEI and the addition of glucose enhance the O 2 adsorption on the catalyst surface. Thus, both biomimetic catalytic and photocatalytic reduction of O 2 to H 2 O 2 are boosted, achieving a significant synergistic enhancement effect of 175%. This study provided a novel design strategy for catalysts and a green routine for efficient H 2 O 2 production.
研究领域:
催化
·
光化学
·
材料科学
·
环境化学
✓ 已验证
DOI
高影响因子
Nano Research
·
2018
·Vol. 12
·期 2
·381-388
·
IF 7.994
Xu Jiangtao,Li Xiaoting,Wang Yuxiang,Guo Ronghui,Shang Songmin,Jiang Shouxiang
Cap-like α-Fe 2 O 3 films are fabricated and deposited onto quartz fabric by using radio frequency magnetron sputtering and annealing. The treated fabric sample in this study shows highly sensitive surface-enhanced Raman scattering (SERS) and excellent flexibility, reproducibility and stability. In addition, the sample can be recovered after a washing process with an organic solvent and repeatedly used. The sensitive SERS performance is attributed to chemical enhancement through a charge transfer process. Moreover, the SERS performance is also found to be dependent on the light coupling effect. When the light absorbance rate of the α-Fe 2 O 3 films increases at a wavelength near that of laser light, the film shows excellent sensitivity due to light coupling effect.
研究领域:
材料科学
·
纳米技术
·
光学
·
分析化学
✓ 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）