MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2024
·
IF 4.2
Wen-Rong Fu,Jian Yang,Zong-Yan Zhao
This investigation sought to improve the photoelectrochemical performance of CuFeO 2 -based photocathodes by integrating copper foam (CF) substrate to leverage enhanced light trapping and electrical conductivity. CuFeO 2 powders, synthesized via a hydrothermal method, were deposited onto various substrates including fluorine-doped tin oxide (FTO), smooth copper foil, rough copper foil, and CF, to construct the photocathodes. The CF substrate, characterized by its rough surface and three-dimensional porous architecture, demonstrated a superior capacity for light trapping, substantially augmenting light absorption efficiency. Concurrently, the inherent conductivity of copper facilitated improved carrier collection and transfer rates. Consequently, the CF/CuFeO 2 photocathode achieved the highest carrier concentration and the most rapid interfacial electron transport rate among the tested configurations. This resulted in the CF/CuFeO 2 photocathode achieving the highest photocurrent density, approximately 3.64 μA/cm 2 , which represents a tenfold increase compared to the FTO/CuFeO 2 photocathode. Furthermore, the CF/CuFeO 2 photocathode showcased notable mechanical and chemical stability, underscoring its potential for enhanced photoelectrochemical applications.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Can Zhang,Xueying Fan,Jian-Tang Jiang,Cong Dou,Yuexing Liang,Xueai Li,Zhenjie Guan,Hongbo Xu,Yuan-Xun Gong,Wenzhu Shao,Cheng-Yan Xu,Liang Zhen
Multispectral absorbing materials that can efficiently dissipate waves across the visible, infrared, and microwave regimes have long been pursued for advanced applications in fields such as space exploration, stealth, and camouflage. However, the wide range of incident wavelengths, spanning five orders of magnitude, presents a significant challenge for the practical implementation of multispectral absorbers. Herein, superblack carbon hierarchitectures (SCHs) are designed using a bottom-up approach involving the self-assembly and self-sacrifice of hydrogen-bonded organic frameworks (HOFs), realizing synergistic morphological customization and dielectric gene editing (via carbon nitride like-moieties conjugated with C═C short chains). Through the cross-dimensional coupling action between light-trapping hierarchitecture and robust dielectric loss, superb visible light absorption (>99.6%), high infrared absorption (98.5%/97.5%/99.6% for long-/mid-/short-wavelength infrared regimes), and ultrabroad microwave absorption (effective bandwidth of 8.52 GHz, nearly covering both the X and K u bands) can be simultaneously achieved in monolayer SCHs-based absorbers. Furthermore, the topologically transformed structures of SCHs enable a systematic dissection of the longstanding ambiguity surrounding the geometrical effect, revealing the synergistic influence of fractal dimension and interconnection status of microparticles, particularly in the microwave regime. This work introduces a new paradigm for multispectral absorption and advances the understanding of absorption mechanisms for developing next-generation absorbers.
研究领域:
材料科学
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光学
·
电磁学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2015
·
IF 4.762
Fangfang Zhong,Ahmet Karatay,Liang Zhao,Jianzhang Zhao,Cheng He,Caishun Zhang,Halime Gul Yaglioglu,Ayhan Elmali,Betül Küçüköz,Mustafa Hayvali
Pt(II) dbbpy bisacetylide (dbbpy = 4,4′-di(tert-butyl)-2,2′-bipyridine) complex (Pt-1) with two different Bodipy ligands was prepared with the goal to attain broad-band visible light absorbing, efficient funneling of the photoexcitation energy (via resonance energy transfer, RET) to the energy acceptor and high triplet formation quantum yields. Construction of the above-mentioned molecular structural motif is challenging because two different arylacetylide ligands are incorporated in the complex; normally two homoleptic acetylide ligands were used for this kind of N∧N Pt(II) complexes. A reference complex with trans bis(tributylphosphine) Pt(II) bisacetylide protocol (Pt-4) was prepared for comparison of the photophysical properties. The two different Bodipy ligands in Pt-1 and Pt-4 constitute singlet/triplet energy donor/acceptor, as a result the harvested photoexcitation energy can be funneled to the triplet state confined on one of the two Bodipy ligands. The photophysical properties of the complexes were studied with steady state UV–vis absorption and luminescence spectroscopies, femto- and nanosecond transient absorption spectroscopies, cyclic voltammetry, as well as DFT/TDDFT calculations. Fluorescence/phosphorescence dual emission were observed for the complex. The ultrafast intramolecular singlet/triplet energy transfer in Pt-1 was confirmed by the transient absorption spectroscopy (kFRET = 2.6 × 1011 s–1, ΦFRET = 87.1%) followed by an intersystem crossing (kISC = 1.9 × 1010 s–1), and the triplet state lifetime (τT) is 54.1 μs. The reference complex Pt-4 shows drastically different kinetics with kFRET = 6.9 × 1010 s–1, ΦFRET = 81.0%, kISC = 5.83 × 109 s–1, and τT = 147.9 μs. Different singlet oxygen (1O2) quantum yields (ΦΔ = 75% and 70%) and triplet state quantum yields (ΦT = 91% and 69%, respectively) were observed for complexes Pt-1 and Pt-4.
研究领域:
化学
·
光物理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Photonics
·
2022
·Vol. 9
·期 9
·628
·
IF 2.536
Chunlei Tao,Daqiang Hu,Ying Wang,Jiang Zhu,Jian Liu
The Ag nanowires/ZnO:Al nanorods (Ag NWs/AZO NRs) composite films were prepared by the simple hydrothermal growth of AZO NRs on the AZO seed layer (SL) at the void regions among the Ag NWs. Distinctive morphology evolution of the Ag NWs depending on the mass of FeCl3⋅6H2O solution was observed on the AZO SL. The effect of Ag NWs with different morphologies on the structure, morphology, optoelectronic properties and light trapping abilities of Ag NWs/AZO NRs composite films was investigated systematically. In particular, the relationship between the morphology, light trapping and electrical properties of the composite films was analyzed in detail. When 7 g of FeCl3⋅6H2O solution was added, Ag NWs with a length of about 50 μM were generated, and the Ag NWs overlapped adequately with each other to form a network structure beneficial to conductivity. Meanwhile, the Ag NWs/AZO NRs composite films containing Ag NWs prepared with 7 g FeCl3⋅6H2O solution exhibited high TT (above 80%), high haze value (0.29) at 550 nm and low sheet resistance (5.9 Ω/sq), which can be employed as transparent electrodes for improving electrical and light trapping properties in solar cells.
研究领域:
材料科学
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纳米技术
✓ 已验证
DOI
高影响因子
Solar RRL
·
2019
·Vol. 4
·期 2
·1900231
·
IF 0
Si Liu,Lusheng Liang,Lingyi Meng,Xiangdong Tian,Zhuangzhuang Zhang,Yaming Yu,Zhang Lan,Jihuai Wu,Jiaoxia Zhang,Peng Gao
Perovskite solar cells (PSCs) have been widely studied during the past 10 years. Albeit the excellent light-absorption ability, the thickness of the perovskite layer is limited to maintain effective control over morphology and carrier migration. Meanwhile, the quality of perovskite films is a crucial factor affecting the performance of final devices. The traditional one-step process for preparing triple-cation perovskite films suffers from small grain size, low crystallization quality, and many surface defects. Herein, in the process of triple-cation perovskite-based solar cells, a facile dosing strategy of a silver nanorods (AgNR) aqueous solution into the perovskite precursor is adopted. The localized surface plasmon resonance effect of AgNR enhances the light-capture ability of the perovskite layer without increasing the thickness. At the same time, the presence of appropriate water helps to obtain high-quality perovskite films with larger grain size and fewer defects. It is found that the synergy of AgNR and water successfully reduces the defect density and increases mobility significantly. Consequently, a power conversion efficiency of 20.18% and a short-circuit current ( J SC ) of 22.08 mA cm −2 is achieved. Meanwhile, an excellent fill factor beyond 82% is reported, which is one of the highest values for triple-cation hybrid PSCs.
研究领域:
材料科学
·
光伏技术
✓ 已验证
产品关联
DOI
ADVANCED FUNCTIONAL MATERIALS
·
2020
·Vol. 30
·期 34
·2002742
·
IF 16.836
Yunxia Zhang,Yucheng Liu,Zhou Yang,Ming Chen,Shengzhong (Frank) Liu
Even though there have been a few reports of substrate surface texturing of thin film perovskite solar cells to enhance their light trapping, there has been no direct texturing of the perovskite material, let alone perovskite single crystals (SCs). Herein, a method to prepare a pyramid-structured perovskite CH 3 NH 3 PbX 3 (CH 3 NH 3 + = MA, X = I, Br) SC surface with minimized light reflection and maximized incident light harvesting is reported. Specifically, a hard template is used to directly transfer the pyramidal texture onto the MAPbX 3 SC during its growth. A well-shaped pyramidal texture is formed on the single-crystal surface leading to improved light trapping. The textured MAPbBr 3 SC shows good crystallinity, prolonged carrier lifetime, and improved carrier mobility. Furthermore, the photodetector made from the textured SC shows enhanced responsivity of 321 A W −1 and external quantum efficiency of 7191%, about two times higher than that of a control device. This method may be used to directly fabricate desired textures on general single crystal surfaces.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2019
·Vol. 29
·期 31
·1901720
·
IF 15.621
Hui Deng,Yiyu Zeng,Muhammad Ishaq,Shengjie Yuan,Huan Zhang,Xiaokun Yang,Mingming Hou,Umar Farooq,Jialiang Huang,Kaiwen Sun,Richard Webster,Hao Wu,Zhenhua Chen,Fei Yi,Haisheng Song,Xiaojing Hao,Jiang Tang
Antimony sulfide (Sb 2 S 3 ) as a wide-bandgap, nontoxic, and stable photovoltaic material reveals great potential for the uppermost cells in Si-based tandem cell stacks. Sb 2 S 3 solar cells with a compatible process, acceptable cost, and high efficiency therefore become the mandatory prerequisites to match silicon bottom cells. The performance of vacuum processed Sb 2 S 3 device is pinned by bulk and interfacial recombination. Herein, a thermally treated TiO 2 buffer layer induces quasiepitaxial growth of vertical orientation Sb 2 S 3 absorber overcoming interface defects and absorber transport loss. Such novel growth could pronouncedly improve the open-circuit voltage ( V oc ) due to the superior interface quality and intraribbon transport. The epitaxial rough Sb 2 S 3 surface shows a texturized-like morphology. It is optimized by tuning the grain sizes to form strong light trapping effect, which further enhances the short-circuit current density ( J sc ) with a 16% improvement. The final optimal device with high stability obtains a power conversion efficiency of 5.4%, which is the best efficiency for full-inorganic Sb 2 S 3 solar cells. The present developed quasiepitaxy strategy supports a superior interface, vertical orientation, and surface light trapping effect, which provides a new perspective for efficient noncubic material thin film solar cells.
研究领域:
材料科学
·
光伏技术
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2014
·
IF 5.03
Xiaodong Ren,Wei Zi,Qiang Ma,Fengwei Xiao,Fei Gao,Sherry Hu,Yanhua Zhou,Shengzhong (Frank) Liu
It is known that the properly textured ZnO film can increase light-scattering and therefore improves light-trapping inside the solar cells, resulting in increased J sc value and consequently solar cell efficiency. Using a low cost solution-based electrochemical deposition , we have developed a ZnO thin film deposition process that offers fine-control of crystal orientation , surface morphology and texture by tuning an additive concentration. Using the optimized textured ZnO films, we have achieved superior light trapping performance especially in long wavelength spectrum ( λ >610 nm) comparing to the vacuum sputtered ZnO. Using single junction a-SiGe:H and multi-junction a-Si:H/a-SiGe:H/a-SiGe:H thin film solar cells, high quantum efficiency (current density) and solar cell efficiencies are attained. It demonstrates that the low cost electrochemical ZnO deposition is an effective method to prepare high quality ZnO film for solar cells.
研究领域:
材料科学
·
能源工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Guoyan Yang,Zuozhu Yin,Xiangyu Han,Zhen Hong,Chan Xie,Yongcun Ma,Jilin Xu,Mingshan Xue
Solar desalination technology, with its green and sustainable characteristics, has become an effective solution to the problem of global freshwater shortage. However, conventional solar evaporators (SE) focus mainly on issues such as reducing the enthalpy of water evaporation and conduction heat loss. Thus, the light refraction losses caused by the surface structure under direct sunlight are neglected. In this study, inspired by corn bracts, a Janus-type SE (SWPP@PCM) with light-trapping effect was designed. By optimizing the SE surface design, the light refraction loss was significantly reduced and the light trapping capability was enhanced. The upper layer of SWPP@PCM consists of superhydrophobic wave polyurethane foam containing polypyrrole. The lower layer is a superhydrophilic hydrogel, consisting of polyvinyl alcohol, chitosan and aminated multiwall carbon nanotubes. The superhydrophobic layer reduces water droplet adhesion and promotes water vapor evaporation. The hydrophilic layer reduces the enthalpy of evaporation and accelerates water transport. Experimental results show that the evaporation rate of the SWPP@PCM solar evaporator reaches up to 3.81 kg·m −2 ·h −1 , and the evaporation efficiency under a single sunlight exposure can reach 96.21 %. Therefore, this 3D Janus self-floating SE (SWPP@PCM) with a light-trapping effect exhibits broad application potential in the fields of seawater desalination and wastewater purification.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2013
·Vol. 1
·期 15
·4858-4863
·
IF 0
Fang Zhang,Ke-Jian Jiang,Jin-Hua Huang,Chun-Chun Yu,Shao-Gang Li,Ming-Gong Chen,Lian-Ming Yang,Yan-Lin Song
A novel compact diketopyrrolopyrrole (DPP) dye was designed and synthesized using DPP core as a bridge to connect bis(4-tert-butylphenyl)phenylamine and cyanoacetic acid units with the D–π–A configuration, and employed as a sensitizer in dye-sensitized solar cells, giving a high power conversion efficiency of 8.61% under AM 1.5 conditions.
研究领域:
材料科学
·
能源科学
·
化学
✓ 已验证
DOI
MATERIALS RESEARCH BULLETIN
·
2020
·
IF 4.019
Zhongwei Ge,Chenglei Wang,Zhiyan Chen,Tong Wang,Tao Chen,Rui Shi,Shengqing Yu,Jianqiang Liu
The TiO 2 nanoparticles aggregation (TNA) was synthesized by a novel one-step hydrothermal method in this work. And for the first time we prepared a kind of jelly pastes of TNA used as photoanode for high-efficiency dye-sensitized solar cells (DSSCs). The prepared TNA provides larger specific surface area of 79.34 m 2 g −1 compared with P25 nanoparticles (49.25 m 2 g −1 ), which is beneficial of absorbing more dye molecules and contributes to high current densities. Moreover, the high scattering effect of TNA caused a strong absorption in the visible-light range increasing the number of excited charges and reducing the energy loss. The effect of various concentrations of TNA pastes for DSSCs was studied to explore the superiority of concentrated TNA pastes. The result shows the DSSC based on high-concentration pastes and double-layer film achieved the best power conversion efficiency (PCE) of 8.34 % corresponding the current density of 17.97 mA cm -2 .
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2022
·
IF 8.91
Xi Li,Xiao Zhang,Shiwen Wang,Peng Yu,Yanhua Xu,Yongjun Sun
To suppress the electron–hole recombination and enhance the electron transfer on carbon nitride , an Fe-doped porous carbon nitride catalyst (Fe/SCN) was synthesized via supramolecular self-assembly method and applied in heterogeneous Fenton activation for efficient tetracycline (TC) degradation. Various characterizations revealed that the catalyst exhibited excellent visible light capture performance and electron transfer capacity . The highest degradation efficiency and mineralization rate of TC (10 mg L −1 ) were achieved under neutral condition (90.3% and 61.2%, respectively) with the leaching of Fe less than 14 μg L −1 . Free radical quenching experiments and spin-resonance spectroscopy characterizations revealed the dominating role of OH in TC degradation, and density functional theory calculation confirmed the formation of Fe-N X and revealed the interaction between Fe sites and H 2 O 2 . Three possible pathways of TC degradation were proposed, and the biological inhibition test revealed the potential of Fe/SCN/H 2 O 2 system to reduce environmental risks caused by TC. This work provides a new insight into the design of metal-doped heterogeneous Fenton catalyst for the efficient degradation of antibiotic contaminants in water.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）