Advanced Energy Materials
·
2022
·Vol. 12
·期 26
·2200725
·
IF 29.698
Kanghua Li,Xuke Yang,Yue Lu,Jiayou Xue,Shuaicheng Lu,Jiajia Zheng,Chao Chen,Jiang Tang
Silicon-based tandem solar cells are regarded as one of the most feasible ways to break the single-junction Shockley–Queisser limit efficiency and further reduce the cost of solar electricity. Recently, wide-bandgap ( ≈ 1.7 eV) perovskite solar cells have drawn intense research interest as the top cell for Si-based tandem devices. Despite significant progress in device efficiency, the unsatisfactory stability of perovskites is still a huge concern. Besides halide perovskites, there are many inorganic semiconductors worthy of investigation. It is believed that cadmium selenide, a binary compound enjoying outstanding optoelectronic properties, high stability, and low cost, is very promising as the top cell for Si-based tandem devices. Herein, the CdSe thin-film solar cells that have been neglected for 3 decades are revisited. Using rapid thermal evaporation, high-quality CdSe thin films with large grain size, high-photoluminescence, small Stokes shift, and intrinsic n-type conductivity are obtained. Furthermore, CdSe solar cells are redesigned and a champion efficiency of 6.00% is achieved. Through in-depth analysis, it is identified that bulk and interface defects limit the open-circuit voltage and hence device performance. This work highlights the great potential of CdSe solar cells as top cells for Si-based tandem devices.
研究领域:
光伏技术
·
材料科学
·
半导体器件
·
可再生能源
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DOI
高影响因子
Materials Today Bio
·
2025
·
IF 10.2
Meng Yang,Weizhuang Chen,Junru Zhou,Fangxia Guan,Ruimei Jin
Cholesterol depletion in tumor cells has been demonstrated as an effective strategy for cancer therapy. Previous studies have shown that cholesterol oxidase (COD) could promote cholesterol consumption. However, these tumor cells typically upregulate cholesterol synthesis as a compensatory mechanism to meet the rapid proliferation demands. To address this issue, we synthesized HM/ZIF-8@COD/IR820 nanoparticle, which simultaneously facilitates cholesterol depletion and inhibits cholesterol synthesis to enhance sonodynamic therapy against hepatocellular carcinoma (HCC). This HM/ZIF-8@COD/IR820 biomimetic nanoparticle was constructed by encapsulating cholesterol oxidase (COD) and the sonosensitizer indocyanine green (IR820) into ZIF-8 nanoparticle, followed by coating with a hybrid cell membrane from tumor cells and erythrocyte membrane. The hybrid membrane provides tumor-targeting capability, enabling HM/ZIF-8@COD/IR820 nanoparticle homes to Hepa1-6 tumor and disassembles in response to the acidic microenvironment and ultrasound stimulation. In vitro and in vivo studies confirmed significant cholesterol depletion and alleviation of hypoxia in Hepa1-6 cells. Upon ultrasound activation, a significant amount of reactive oxygen species (ROS) was generated, thereby enhancing the therapeutic effect on the inoculated tumors. Non-targeted metabolomics analysis further validated the downregulation of cholesterol metabolism-related pathways, which was consistent with the Filipin staining results observed in cellular experiments. Importantly, Hepa1-6 tumor growth was significantly suppressed and the inhibition rate reached 90%. These findings highlight HM/ZIF-8@COD/IR820 as a promising biomimetic nanoparticle orchestrates a two-pronged attack on hepatocellular carcinoma cholesterol metabolism: top-down suppression of cholesterol biosynthetic pathways, and bottom-up elimination of existing cholesterol stores, yielding outstanding therapeutic effects against HCC.
研究领域:
肿瘤学
·
纳米医学
·
分子肿瘤学
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生物材料
·
转化医学
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肿瘤代谢
·
声动力治疗
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产品关联
DOI
PubMed
高影响因子
Nano-Micro Letters
·
2025
·Vol. 17
·期 1
·1-20
·
IF 36.3
Li Xin,Ying Zhiqin,Li Shuo,Chen Lei,Zhang Meili,Liu Linhui,Guo Xuchao,Wu Jun,Sun Yihan,Xiao Chuanxiao,Zeng Yuheng,Wu Jian,Yang Xi,Ye Jichun
Despite significant advancements in the power conversion efficiency (PCE) of perovskite/silicon tandem solar cells, improving carrier management in top cells remains challenging due to the defective dual interfaces of wide-bandgap perovskite, particularly on textured silicon surfaces. Herein, a series of halide ions (Cl − , Br − , I − ) substituted piperazinium salts are designed and synthesized as post-treatment modifiers for perovskite surfaces. Notably, piperazinium chloride induces an asymmetric bidirectional ions distribution from the top to the bottom surface, with large piperazinium cations concentrating at the perovskite surface and small chloride anions migrating downward to accumulate at the buried interface. This results in effective dual-interface defect passivation and energy band modulation, enabling wide-bandgap (1.68 eV) perovskite solar cells to achieve a PCE of 22.3% and a record product of open-circuit voltage × fill factor (84.4% relative to the Shockley–Queisser limit). Furthermore, the device retains 91.3% of its initial efficiency after 1200 h of maximum power point tracking without encapsulation. When integrated with double-textured silicon heterojunction solar cells, a remarkable PCE of 31.5% is achieved for a 1.04 cm 2 monolithic perovskite/silicon tandem solar cell, exhibiting excellent long-term operational stability ( T 80 = 755 h) without encapsulation in ambient air. This work provides a convenient strategy on dual-interface engineering for making high-efficiency and stable perovskite platforms.
研究领域:
材料科学
·
能源技术
·
光伏器件
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产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Zijie Zhang,Yiwen Xian,Dan Zhou,Yang Liu,Chao Liu,William Weijia Lu,Hongmei Liu,Decheng Wu
Conventional hydrogels often suffer from weak and fragile natures, limiting their uses in mechanically demanding areas. By contrast, spider silk hold impressive strength and toughness owing to its hierarchical structure. Inspired by spider dragline fiber, the boundaries of conventional hydrogels are broken by introducing hierarchical structures in chitosan fibrous hydrogels (FH CS ) via a top-down multidimensional engineering strategy. Each level of hierarchical structure is introduced in different approaches: macroscopic fibers are fabricated via electrospinning; microscopic fibrillar structures are introduced based on “sea-islands” phase separation structure; chitosan anhydrous crystallites at the molecular level are induced by hydrogen bonding reconstruction. Through this strategy, the resulting hierarchical FH CS exhibits extreme mechanical properties (fracture strength: 47.0 ± 2.4 MPa; Young's modulus: 5.6 ± 2.4 MPa; fracture toughness: 12.3 ± 1.5 MJ m −3 ), simulating the mechanical properties of cartilage tissue. FH CS also shows good biocompatibility, biodegradability, and modulation on cell spreading and phenotypes via mechanotransduction pathway. Overall, FH CS emerges as a promising material in the mechanically demanding areas of biomedical fields. Besides, the top-down multidimensional engineering strategy provides fresh perspectives for creating hierarchical materials.
研究领域:
材料科学
·
生物材料
·
组织工程
·
生物医学工程
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产品关联
DOI
高影响因子
Energy Technology
·
2025
·
IF 3.6
Tai Feng,Xueqian Cao,Taixi Li,Rui Diao,Yidan Jing,Xiaomin Zhang,Jin Zhu
Cellulose-based hydrogels have gained prominence in hydrogel electrolyte substrate research due to their remarkable flexibility and renewable raw materials. However, cellulose hydrogels produced by traditional bottom-up synthesis strategies generally suffer from insufficient mechanical properties and low areal-specific capacitance in constructed capacitors. This study employs a top-down strategy, utilizing the natural cellulose framework of delignified wood as a structural substrate. Through the synergistic effects of in situ sodium alginate filling and gradient zinc perchlorate cross-linking, a zinc-ion–cross-linked wood-based hydrogel electrolyte (ZWH) was constructed. When the Zn 2+ concentration in the hydrogel electrolyte was 2 mol·L −1 , the resulting ZWH-2 material demonstrated breakthrough performance enhancements: achieving a mechanical strength of 9.47 MPa and exhibiting an ionic conductivity as high as 68.97 mS·cm −1 . Energy storage systems utilizing this electrolyte exhibited exceptional electrochemical performance. The activated carbon symmetric supercapacitor and zinc-activated carbon asymmetric supercapacitor achieved areal-specific capacitances of 165 and 361 mF·cm −2 at a current density of 2 mA·cm −2 . In this study, zinc ions serve dual roles as both cross-linkers for the hydrogel and electrolyte components, facilitating a multifunctional electrolyte system with bend resistance. This study offers innovative perspectives for creating sustainable, adaptable energy storage devices suitable for a broad temperature spectrum.
研究领域:
材料科学
·
储能技术
·
电化学
·
可持续材料
·
聚合物水凝胶
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产品关联
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2022
·
IF 7.305
Wei Wang,Zhengzhao Yang,Jiaxin Ding,Jiaqi Kong,Xin Li
Inverted flexible perovskite solar cells (FPSCs) offer a promising route towards commercialization by using undoped inorganic hole transport layers and thermally-stable electron transport layers (ETLs), which deliver good environmental stability such as water resistance. But the power-conversion-efficiencies (PCEs) of inverted flexible perovskite cells are still far below those of FPSCs in regular configuration so far. One main challenge for achieving high-performance FPSCs lies in optimizing the ETLs and their adjacent buffering layers. Herein, we modify the fullerene derivatives (Phenyl-C61-butyric acid methyl ester , PCBM) ETLs by adding 3-aminopropyl triethoxysilane (APTS) molecules into the PCBM solutions. The addition of APTS results in smoother and denser PCBM layers via a physically steric-hindrance effect mechanism, which could benefit the electron collection between the PCBM layer and the perovskite layer. More importantly, APTS can offer nucleating sites, such as amine groups or hydroxy groups by partially hydrolyzing, to grow conformal tin oxide (SnO x ) layers by atomic layer deposition (ALD), which acts as robust buffer layers to replace traditional bathocuproine (BCP) layer. Finally, high-performance inverted FPSCs based on the optimized PCBM/SnO x electron-selective layers are fabricated, delivering a best PCE of 18.62%. The unencapsulated FPSC showed a slow decay and remained above 90% of its initial PCE after being stored for more than 600 h in a damp environment with a humidity of more than 85% R.H. The strategy is demonstrated to be applicable in the future large-scale production of stable FPSCs.
研究领域:
材料科学
·
能源技术
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Mengxiang Fang,Ying Xie,Yan Shao,Xiaoming Xu,Yang Xia,Man Mou,Ximing Hu,Tao Wang,Zihao Liu
The steel industry generates 7–9 % of the world’s anthropogenic carbon emissions. Carbon capture, utilization, and storage (CCUS) technologies for low carbon emissions from the steel industry have attracted research attention. Chemical absorption is the most mature and widely used carbon capture method, and reducing the energy consumption of this technology is currently a research hotspot. This work focused on the development of amine blends suitable for carbon capture in a top gas recycling-oxygen blast furnace (TGR-OBF) for low-carbon steelmaking and further reduction of carbon emissions. The effects of piperazine (PZ) and its derivatives on methyldiethanolamine (MDEA) activation were explored. PZ and 2-(piperazin-1-yl)ethanamine (AEP) most significantly activated MDEA. The best absorption and regeneration performance was achieved with aqueous amine solutions at the MDEA:PZ and MDEA:AEP ratios of 5:3 and 1:1, respectively. Blast furnace gas is rich in CO, and we verified that CO does not significantly affect the overall performance of the aqueous amine solution. The maximum absorption rate of the developed MAA absorbent was similar to that of 30 wt% monoethanolamine (MEA), and at 20 % and 35 % CO 2 , the cyclic capacities were 1.57 and 1.47 times greater than that of 30 wt% MEA, while the maximum regeneration rates were 2.13 and 1.92 times greater than those of 30 wt% MEA, respectively. A bench-scale CO 2 capture experiment performed at a flow rate of 4 Nm 3 /h verified the scale-up application potential of the absorbent. The regeneration energy of MAA under the optimal operating conditions was 2.86 GJ/ton CO 2 , which was 28.5 % lower than that of 30 wt% MEA. Moreover, MAA displayed a lower latent heat and lower reaction heat. The developed MAA absorbent has great adaptability and low regeneration energy and is expected to be applied in the steel industry to effectively reduce blast furnace carbon emissions.
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
PHYSICS AND CHEMISTRY OF MINERALS
·
2026
·Vol. 53
·期 1
·2
·
IF 1.6
He Jinze,Liu Zhaodong,Ishii Takayuki
An alumina-rich silicate phase of calcium ferrite-type (CF) phase is a major mineral in crustal rocks subducted into the lower mantle. However, its chemical composition with increasing pressure and temperature remains unclear yet. In this study, phase relations in the CaAl 2 O 4 -MgAl 2 O 4 system were determined at 15–25 GPa and 1100–2000 °C by using a multi-anvil apparatus. In the pressure-temperature range, CaAl 2 O 4 -rich CF phase coexisted with another alumina-rich silicate of hexagonal (NAL) phase in the (1-x)CaAl 2 O 4 -xMgAl 2 O 4 system (x = 5–70 mol%). The solubility of the MgAl 2 O 4 component in the CF phase increases with pressure and temperature, from 3.8 mol% to 23.9 mol%, while the composition of the NAL phase was almost constant. In the MgAl 2 O 4 -rich system, we found that almost no CaO was incorporated into MgAl 2 O 4 phases in the present pressure-temperature range. MgAl 2 O 4 spinel (Sp) transformed to decomposition phases of periclase (Per) or Mg 2 Al 2 O 5 (mLd) phase and corundum (Crn), and then the CF phase formed at higher pressures, showing phase assemblages of NAL + Sp, NAL + Crn + Per or mLd, and NAL + CF with increasing pressure. An additional experiment in the NaAlSiO 4 -CaAl 2 O 4 system at 20 GPa and 1400 °C showed both Na- and Ca-rich CF phases incorporated Ca 2+ and Na + , respectively. These results together with previously determined phase relations in NaAlSiO 4 -MgAl 2 O 4 can explain limited CaO contents of CF phases in crustal materials subducted into the lower mantle. In addition, pressure-temperature changes in the MgAl 2 O 4 solubility of CF-type CaAl 2 O 4 can be used as a new pressure calibrant in the multi-anvil experiments.
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产品关联
DOI
高影响因子
Coatings
·
2020
·Vol. 10
·期 4
·425
·
IF 2.436
Siting Chen,Yuzhi Li,Yilong Lin,Penghui He,Teng Long,Caihao Deng,Zhuo Chen,Geshuang Chen,Hong Tao,Linfeng Lan,Junbiao Peng
Inkjet-printed top-gate metal oxide (MO) thin-film transistors (TFTs) with InGaSnO semiconductor layer and carbon-free aqueous gate dielectric ink are demonstrated. It is found that the InGaO semiconductor layer without Sn doping is seriously damaged after printing aqueous gate dielectric ink onto it. By doping Sn into InGaO, the acid resistance is enhanced. As a result, the printed InGaSnO semiconductor layer is almost not affected during printing the following gate dielectric layer. The TFTs based on the InGaSnO semiconductor layer exhibit higher mobility, less hysteresis, and better stability compared to those based on InGaO semiconductor layer. To the best of our knowledge, it is for the first time to investigate the interface chemical corrosivity of inkjet-printed MO-TFTs. It paves a way to overcome the solvent etching problems for the printed TFTs.Keywords:inkjet printing;InGaSnO;thin-film transistors;top gate;metal oxide
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
RSC Advances
·
2018
·Vol. 8
·期 29
·16344-16348
·
IF 2.936
Chang Liu,Bin Qian,Xiaofeng Liu,Limin Tong,Jianrong Qiu
Additive manufacturing of silica glass by stereolithography is a new technology. Improving the efficiency of this technology is an important issue. In this work, a stereolithography system using top-down approach and a compatible suspension for this approach was developed. The debinding behavior of the green part (the solidified suspension) was discussed in detail based on the results of thermogravimetric analysis and Fourier transform infrared absorption spectroscopy. A fast heat treatment within 16 hours was adopted for debinding and sintering of the green part which took only 1/3 of the time of previous report. Designed glassware which could not be processed by conventional technologies was manufactured in this way, and the products showed similar properties with fused silica, as confirmed by X-ray diffraction and UV-vis-IR spectrometer.
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
ACS Photonics
·
2022
·
IF 7.077
Jianyu Zhang,Anfeng Li,Bohan Li,Manman Yang,Xia Hao,Lili Wu,Dewei Zhao,Gengpei Xia,Zefeng Ren,Wenbo Tian,Dingyu Yang,Jingquan Zhang
X-ray detection is widely used in medical imaging, safety inspection, scientific research, and so on, in which the Cs3Bi2I9 perovskite single crystal (SC) material has attracted increasing attentions for its excellent intrinsic properties (high X-ray absorption coefficient, low toxicity, high resistivity, etc.). However, existing methods for this SC growth enable low quality and high preparation cost, thus resulted in the defects of limit sensitivity, detectable dose rate, and large-scale application of the Cs3Bi2I9-based device. In this work, high-quality Cs3Bi2I9 perovskite SCs were successfully grown by the novel top-seed solution (TSS) method, which contains the advantages of constant growth rate, simple system and high yield. Due to the high quality of TSS-based Cs3Bi2I9 SC, the X-ray detector exhibited high sensitivity of 4382 μC·Gyair–1 cm–2 at 20 V mm–1 bias. Under 7.93 nGyair s–1 X-ray irradiation, the signal-to-noise ratio reached 27.9. This work presents a new strategy for the low-cost growth of high-quality Cs3Bi2I9 perovskite SC.
研究领域:
材料科学
·
医学影像
·
辐射探测
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2022
·
IF 6.267
Lingyue Zhou,Wenyan Guo,Liren Zhang,Wenbo Che,Youming Yu
Transparent wood is a promising material with many advantages, including high optical transmittance, adjustable optical haze, and excellent mechanical properties. However, the manufacture of transparent wood always requires polymer filling, which affects its sustainability; the flammability of transparent wood also limits its development and application in more fields. Herein, a flame retardant transparent wood film (FR-TWF) was prepared by a top-down chemical treatment. Delignification and TEMPO-mediated oxidation can effectively remove lignin from natural wood and introduce carboxyl groups into the cellulose for further chelation with Al ions. Then, FR-TWF was obtained through self-densification by forming fully collapsed wood cell walls and elastic lumen after drying. The obtained FR-TWF had high optical transmittance (∼76.1%) and haze (∼75.2%); its tensile strength reached 354.3 MPa, exceeding most existing plastic films. Compared with natural wood, the peak of heat release rate and total heat release of FR-TWF decreased by 91.4% and 77.1%, respectively. The excellent flame retardant property of FR-TWF is attributed to the generation of graphitized carbon layers during combustion and the release of more water vapor at high temperatures. Furthermore, the FR-TWF merits being price moderate, sustainable, and biodegradable, which can be widely used in flexible device substrates or optical management devices.
研究领域:
材料科学
·
林业工程
·
化学工程
✓ 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）