ACS Applied Materials & Interfaces
·
2016
·
IF 7.145
Minchao Qin,Junjie Ma,Weijun Ke,Pingli Qin,Hongwei Lei,Hong Tao,Xiaolu Zheng,Liangbin Xiong,Qin Liu,Zhiliang Chen,Junzheng Lu,Guang Yang,Guojia Fang
Indium oxide (In2O3) as a promising n-type semiconductor material has been widely employed in optoelectronic applications. In this work, we applied low-temperature solution-processed In2O3 nanocrystalline film as an electron selective layer (ESL) in perovskite solar cells (PSCs) for the first time. By taking advantages of good optical and electrical properties of In2O3 such as high mobility, wide band gap, and high transmittance, we obtained In2O3-based PSCs with a good efficiency exceeding 13% after optimizing the concentration of the precursor solution and the annealing temperature. Furthermore, to enhance the performance of the In2O3-based PSCs, a phenyl-C61-butyric acid methyl ester (PCBM) layer was introduced to modify the surface of the In2O3 film. The PCBM film could fill up the pinholes or cracks along In2O3 grain boundaries to passivate the defects and make the ESL extremely compact and uniform, which is conducive to suppressing the charge recombination. As a result, the efficiency of the In2O3-based PSC was improved to 14.83% accompanied with VOC, JSC, and FF being 1.08 V, 20.06 mA cm–2, and 0.685, respectively.
研究领域:
材料科学
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光电子学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2021
·Vol. 28
·期 10
·1-12
·
IF 3.097
Gao Feng,Chen Dandan,Liu Tianyu,Chen Jinyao,Kang Jian,Xu Ruizhang,Cao Ya,Xiang Ming
Thin film composite (TFC) technology has been widely used to prepare reverse osmosis (RO) membrane, in which the relationship between support layer and selective layer plays a significant role. To thoroughly clarify the influence of support layer pore size on the properties of selective layer, herein, we prepared a series of polysulfone (PSf) support layers with different surface pore sizes by adjusting casting solution concentrations. Afterward, polyamide (PA) selective layers were prepared on top of PSf support layers via interfacial polymerization method. Detailed studies were performed to illustrate membrane-forming dynamics, TFC morphologies and membrane performances. The pore size of support layer has a substantial effect on the aqueous monomer diffusion behavior as well as selective layer morphologies and overall performances; specifically, resulting in differences in both thickness and roughness of PA layer and also inducing different membrane performances. Combined with anti-backflush experiments, we also provide an insight view into the interfacial adhesion between support layer and selective layer.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2025
·
IF 4
Zhao Meng-Yao,Luo Xin-Zhao,Li Die,Dong Ya-Qi,Wang Qian,Xu Xiao-Ling,Zhang Qiang
It is important to understand the evolution of the matter on the polymer membrane surface. The in situ and real-time monitoring of the membrane surface will not only favor the investigation of selective layer formation but can also track the fouling process during operation. Herein, an aggregation-induced emission (AIE)-active polymer membrane was prepared by the interfacial polymerization of a cyclodextrin-based glycocluster (CD@Glucose) and a tetraphenylethylene derivative modified with boronic acid groups (TPEDB) on the surface of a polyacrylonitrile (PAN) ultrafiltration membrane. This interfacial polymerization method can be stacked layer-by-layer to regulate the hydrophilicity and pore structure of the membrane. With the increase in the number of polymer layers, the separation and antifouling properties of the membrane gradually improved. Owing to the AIE property of the crosslinking agent TPEDB, the occurrence of interfacial polymerization and the degree of fouling during membrane operation can be monitored by the fluorescence distribution and intensity. With the aggravation of membrane fouling, the fluorescence decreased gradually, but recovered after cleaning. Therefore, this AIE effect can be used for real-time monitoring of interfacial polymerization as well as membrane fouling.
研究领域:
高分子化学
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膜科学
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材料表征
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荧光监测
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产品关联
DOI
高影响因子
Advanced Energy Materials
·
2019
·Vol. 9
·期 40
·1901620
·
IF 24.884
Jing Wei,Fengwan Guo,Bing Liu,Xiangyu Sun,Xi Wang,Zijiang Yang,Kun Xu,Ming Lei,Yicheng Zhao,Dongsheng Xu
Although planar-structured perovskite solar cells (PSCs) have power conversion efficiencies exceeding 24%, the poor photostability, especially with ultraviolet irradiance (UV) severely limits commercial application. The most commonly-used TiO 2 electron selective layer has a strong photocatalytic effect on perovskite/TiO 2 interface when TiO 2 is excited by UV light. Here a UV-inert ZnTiO 3 is reported as the electron selective layer in planar PSCs. ZnTiO 3 is a perovskite-structured semiconductor with excellent chemical stability and poor photocatalysis. Solar cells are fabricated with a structure of indium doped tin oxide (ITO)/ZnTiO 3 /Cs 0.05 FA 0.81 MA 0.14 PbI 2.55 Br 0.45 /Sprio-MeOTAD/Au. The champion device exhibits a stabilized power conversion efficiency of 19.8% with improved photostability. The device holds 90% of its initial efficiency after 100 h of UV soaking (365 nm, 8 mW cm −2 ), compared with 55% for TiO 2 -based devices. This work provides a new class of electron selective materials with excellent UV stability in perovskite solar cell applications.
研究领域:
材料科学
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能源技术
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DOI
高影响因子
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
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2020
·Vol. 35
·期 2
·272-279
·
IF 0.64
Li Zhi,Shen Wenjian,Zhao Juan,Ying Hangkai,Wu Zhengli,Liu Yifan,Li Wangnan,Ku Zhiliang,Peng Yong,Huang Fuzhi,Cheng Yibing,Zhong Jie,Fu Zhengyi
A novel aqueous Sn-S complex solution was applied as precursor to fabricate SnO 2 electron selective layers (ESLs) for the hybrid perovskite solar cells (PSCs). The tin and sulfur powder were directly dissolved in a (NH 4 ) 2 S water solution to form Sn-S precursor. After depositon and annealing, the SnO 2 film was formed, presenting as a low cost and enviromental friendly method for preparation of ESL. The films showed excellent transmittance at visible wavelength range. Moreover, the method exhibited high compatibility for doping using Cu, Cd, Li, and Zn elements. Zn doping (0.05 M) in the as-prepared SnO 2 ESL significantly improved perovskite solar cells (PSCs) performance. The highest PCE of 13.17% was achived with 15% enhancement compared to that of undoped SnO 2 ESL samples. TiCl 4 modifications on SnO 2 film improved photovoltaic performance to 14.45%, but resulted in the poor long-term stability, around 80% more degredation than that of PSCs based on Zn-doped SnO 2 films.
研究领域:
材料科学
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能源技术
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2016
·
IF 7.145
Xi Zhang,Yan Lv,Hao-Cheng Yang,Yong Du,Zhi-Kang Xu
Thin-film composite (TFC) nanofiltration membranes are prepared via interfacial polymerization with a polyphenol coating as an interlayer for the thin and smooth polyamide selective layer. The polyphenol interlayer is simply fabricated by the codeposition of tannic acid and diethylenetriamine without changing the surface morphology of the polysulfone ultrafiltration substrate. An interfacial polymerization is conducted from piperazidine and trimesoyl chloride on the polyphenol interlayer to construct the polyamide selective layer. The as-prepared TFC nanofiltration membranes show nearly tripled fold of water permeation flux as compared with those prepared at the same condition without an interlayer. They also exhibit a high rejection to Na2SO4 (>98%) because the thin and defect-free polyamide selective layer is formed on the polyphenol interlayer. These nanofiltration properties have high reproducibility, which means the TFC nanofiltration membranes are suitable for scale-up industrial applications.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2018
·Vol. 42
·期 3
·2243-2247
·
IF 3.201
Yuming Dong,Shibin Xia,Pingping Jiang,Guangli Wang,Shuang Zhao
Photocathodes sensitized by photoactive semiconductors are of great significance for photoelectrochemical hydrogen evolution and tandem solar cells, yet their development is hindered by the scarcity of appropriate materials to serve as a hole-selective layer. In this work, we report a novel photocathode employing PbS as the photoactive material and tin-doped indium oxide (ITO) as the hole-selective layer. The optimized electrode showed a photocurrent of −75 μA cm−2 under light illumination at −0.222 V vs. Ag/AgCl with operational activity for 9 hours. The key factors for hole transfer were investigated. These results showed ITO to be a promising hole-transfer material for photoelectrochemical photocathodes.
研究领域:
材料科学
·
光化学
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
HaiYan Huang,JingJing Xia,Ying Liu,JiaoJiao Wang,XueMin Chen,WenXu Wang,Qianqian Lan,Xu Zhang,Yan Lv,Tianxi Liu
Nanofiltration membranes (NFMs) with superior permeability and high rejection of both divalent anions and cations are highly desirable to meet the increasing separation demands of complex systems. Herein, we propose a three-in-one strategy to develop a state-of-the-art dually charged thin-film composite (TFC) nanofiltration membrane consisting of a positively charged electrospun nanofiber substrate (NFS) with surface mineralization and a negatively charged polyamide (PA) selective layer prepared by interfacial polymerization (IP). The highly hydrophilic mineralized nanofiber substrate not only effectively reduces the thickness of the PA selective layer but also crumples its structures by the abundant zirconia nanoparticles on the substrate surface, resulting in excellent water flux (15.0 L m–2 h–1 bar–1) for the TFC NFMs. The relationship between the thickness of the selective layer and substrate is further investigated using dissipative particle dynamics (DPD) simulations. Meanwhile, the dually charged NFM exhibits relatively high rejection for both anions (97.1% for Na2SO4 and 97.9% for MgSO4) and cations (87.9% for MgCl2) in aqueous solutions compared with single-charged membranes, which is attributed to the dual-repulsion effect of the selective layer and the substrate surface bearing opposite charges. Moreover, the prepared NFMs exhibit good stability and excellent antifouling performance. This work may pave the way for the development of highly efficient nanofiltration membranes for the practical separation of comprehensively charged solutes.
研究领域:
材料科学
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环境工程
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2014
·
IF 4.908
Zhihua Qiao,Zhi Wang,Shuangjie Yuan,Jixiao Wang,Shichang Wang
Small molecular amines (SMAs) (ethanediamine (EDA), piperazine (PIP), monoethanolamine (MEA) and diethanol amine (DEA)) were separately used to modify the polyvinylamine (PVAm). ATR-FTIR, elemental analyzer, XRD and SEM were employed to characterize the SMA interacted PVAm. The PVAm–SMA/polysulfone (PS) membranes were developed by coating PVAm–SMA mixed solutions on the PS ultrafiltration membrane. CO 2 permeance and CO 2 /H 2 selectivity of the PVAm–SMA/PS membranes were investigated. Among different PVAm–SMA/PS membranes, the PVAm–MEA/PS membrane shows the highest CO 2 /H 2 separation performance. Moreover, the effect of the selective layer thickness on the CO 2 /H 2 separation performance of the PVAm–MEA/PS membrane was studied. With increasing the PVAm–MEA selective layer thickness, the CO 2 /H 2 separation performance of the membrane apparently decreases. Finally, the CO 2 /H 2 separation performance stability of the PVAm–MEA/PS membranes was investigated and no deterioration in the membrane permselectivity was observed.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
Solar RRL
·
2022
·Vol. 6
·期 7
·2200091
·
IF 9.173
Jiexuan Jiang,Andraž Mavrič,Nadiia Pastukhova,Matjaz Valant,Qiugui Zeng,Zeyu Fan,Beibei Zhang,Yanbo Li
Inorganic carrier-selective layers (CSLs), whose conductivity can be effectively tuned by doping, offer low-cost and stable alternatives for their organic counterparts in perovskite solar cells (PSCs). Herein, a dual-source electron-beam co-evaporation method for the controlled deposition of copper-doped nickel oxide (Cu:NiO) and tungsten-doped niobium oxide (W:Nb 2 O 5 ) as hole and electron transport layers, respectively, is used. The mechanisms for the improved conductivity using dopants are investigated. Owing to the improved conductivity and optimized band alignment of the doped CSLs, the all-inorganic-CSLs-based PSCs achieve a maximum power conversion efficiency (PCE) of 20.47%. Furthermore, a thin titanium buffer layer is inserted between W:Nb 2 O 5 and the silver electrode to prevent halide ingression and improve band alignment. This leads to a further improvement of PCE to 21.32% and long-term stability (1200 h) after encapsulation. Finally, the large-scale applicability of the doped CSLs by coevaporation is demonstrated for the device with 1 cm 2 area showing a PCE of over 19%. The results demonstrate the potential application of the coevaporated CSLs with controlled doping in PSCs for commercialization.
研究领域:
材料科学
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光伏技术
·
能源转换
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产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Xinzhao Luo,Xin Liu,Yaqi Dong,Liyuan Fan,Tianheng Wang,Qiang Zhang
As a kind of functional heterocyclic polymer, the boroxine network could be facilely synthesized via dehydration reaction. However, due to the reversible nature of the dynamic covalent boroxine bond in water, it has rarely been used to fabricate membrane materials. Herein, we report the fabrication of selective layer of anti-dye-deposition membranes based on stable boroxine network for the first time. Functional polymers with pendant phenylboronic acid groups were dehydrated under mild conditions to form stable cross-linked boroxine network, which successfully acted as the selective layer of membranes. The pore size of selective layer could be well-tuned by changing the reaction conditions such as concentration, temperature, and vacuum degree. Compared with the original membrane, the composite membranes exhibit high separation performance towards organic molecules. In addition, the boroxine network demonstrated excellent chemical stability in water and could maintain stable permeation flux and retention rate after 30 days of operation. In particular, the modified membranes exhibited unexpected anti-fouling performance against organic dye clusters. After repeated anti-fouling cycles, the flux recovery rate of modified membranes was above 99.2%, highlighting the potential of the boroxine network in enhancing the anti-fouling performance of membrane.
研究领域:
材料科学
·
膜技术
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Advanced Membranes
·
2023
·
IF 0
Qing Xia,Tengyang Zhu,Zhengze Chai,Yan Wang
Chitosan (CS) membranes have been widely applied in water/ethanol separation via membrane-based pervaporation, but a bottleneck in the practical application always exists due to their severe swelling behavior in aqueous solution and consequently low permeation flux due to the large membrane thickness. Here, thin film composite (TFC) hollow fiber (HF) membrane with an in-situ-crosslinked ultrathin CS selective layer is developed via multiple supramolecular interaction-crosslinking strategy for efficient water/ethanol separation via pervaporation. With Fe 3+ -phytic acid (PhA) complex pre-deposited on the substrate, the subsequently introduced CS selective layer is in-situ crosslinked via multiple supramolecular interactions, including coordination, electrostatic, and hydrogen bonding interactions. By varying the cycle number of Fe 3+ /PhA assembly and the species of employed organophosphorus acid, the anti-swelling properties of the resultant TFC CS membrane is enhanced and the separation performance is maximized. The optimal TFC-CS-Fe 2 PhA 2 membrane with two cycles of Fe 3+ /PhA assembly has a selective layer thickness of 60 n m and a corresponding ultrahigh flux of 2.87 kg/m 2 h, coupled with a permeate water concentration of 99.5 wt% and good long-term stability for the dehydration of 85 wt% ethanol aqueous solution at 50 °C. The supramolecular interaction-crosslinking presented in this work provides an efficient and promising strategy for the construction of TFC CS membrane with excellent anti-swelling property and superior separation performance.
研究领域:
材料科学
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化学工程
·
膜分离技术
✓ 已验证
DOI
危险品化学品经营许可证（带存储）