CHEMICAL PHYSICS
·
2019
·
IF 1.822
Tong-Tong Zhang,Xiang-Dong Gao,Yong-Qing Wu,Jing-Nan Yang,Xiao-Min Li
Cr-doped BaSnO 3 (BaSn 1-x Cr x O 3 , BSCO-x, x = 0–0.15) thin films with nanoporous structure were deposited on fluorine-doped tin oxide substrates via a colloidal solution route. The BSCO-x films exhibited single cubic perovskite phase and nanoporous feature, with the typical specific surface area of 18.98 m 2 /g and pore size of 10.75 nm (BSCO-0.15). The lowest band gap of 2.68 eV and a high transparency (above 70% in 500–800 nm) were realized in BSCO-0.15 film. This work paves a way toward perovskites with tunable band gap and nanoporous structures for varied photo and photoelectric devices.
研究领域:
材料科学
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2015
·
IF 2.947
Chuande Huang,Xiaodong Wang,Xin Liu,Ming Tian,Tao Zhang
In this paper, the phase evolution, microstructure changes, and element diffusion for the formation of BaSnO 3 from BaCO 3 and SnO 2 were extensively investigated. It was found that BaCO 3 rapidly diffused on surface of SnO 2 at the initial stage of the reaction (approximately 700 °C), forming a uniform BaSnO 3 shell. Subsequently, BaSnO 3 grew via two different routes depending on the calcination temperature. When the reaction was carried out below 820 °C, BaSnO 3 phase further grew by diffusion of barium ions across BaSnO 3 layer to SnO 2 phase, since the BaSnO 3 interlayer prevented the direct reaction between surface BaCO 3 and SnO 2 core. Once a higher temperature above 820 °C was provided, Ba 2 SnO 4 were generated by reaction between BaCO 3 and BaSnO 3 shell. Under such circumstances, pure BaSnO 3 was obtained by diffusion of barium ions from Ba 2 SnO 4 across BaSnO 3 to SnO 2 . The rate-determining step in both cases was assigned to the diffusion of barium ions.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Fengyan Xie,Yafeng Li,Tingting Xiao,Deli Shen,Mingdeng Wei
Highly crystalline BaSnO 3 nanoparticles were synthesized via a facile water bath method, and were characterized with XRD, SEM and TEM. A double-treatment method (chemical-bath deposition method and TiCl 4 treatment method) was first applied to improve the performance of the dye-sensitized solar cells (DSSCs) based on BaSnO 3 photoanode film. EIS , OCVD , and IMPS/IMVS results suggested that the enhanced electron transport rate and prolonged electron lifetime lead to a dramatically improve photovoltaic efficiency of cells in response to CBD and TiCl 4 treatment. Consequently, an enhancement of 21.7% and 32.0% was obtained after CBD surface treatment and further TiCl 4 treatment in comparison to cells without treatment, respectively. The highest efficiency of 5.18% was finally obtained after optimizing all conditions.
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
ACS Sustainable Chemistry & Engineering
·
2021
·
IF 8.198
Jieyu Wang,Aijun Han,Mingquan Ye,Chenlu Chen,Xin Chen,Xufei Zhu
In this paper, a series of coated fabrics based on Fe-doped BaSnO3 (BaSn1–xFexO3−δ, x = 0.00, 0.05, 0.10, 0.20, 0.25) powder pigments were prepared. The results indicate that the developed pigments are substitutional solid solutions with no impurity and the valencies of iron confirmed by X-ray photoelectron spectroscopy (XPS) are +2 and +3. The BaSn1–xFexO3−δ pigments possess high near-infrared (NIR) solar reflectance (64.92–79.81%), and the change in the near-infrared reflectance value can be explained by the free carrier concentration and electron trap theory. The pigments exhibit the alteration of yellow-green to brown, which is ascribed to the charge-transfer transition (Sn 5s + 5p ↔ Fe 3d). The BaSn1–xFexO3−δ-coated fabrics exhibit excellent high NIR solar reflectance and thermal insulating performance. The NIR solar reflectance of the BaSn0.80Fe0.20O3−δ-coated fabric is up to 64.30%. Compared with those of brown uncoated fabric and conventional brown (Pigment Yellow 42) coated fabric, the inner surface temperature of the BaSn0.80Fe0.20O3−δ-coated fabric is lowered by 7.6 and 4.2 °C, while the heat absorption is reduced by 51.0 and 37.9%, respectively. The coated fabric shows excellent washing durability and chemical stability. In summary, these coated fabrics have the potential to serve as thermal insulation coated fabrics.
研究领域:
材料科学
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纺织工程
·
能源与环境
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Chongyang Sun,Lin Guan,Yiping Guo,Bijun Fang,Jiaming Yang,Huanan Duan,Yujie Chen,Hua Li,Hezhou Liu
Organic-inorganic hybrid perovskites are a promising candidate for fabricating high-efficiency solar cells. In this work, well-dispersed ternary oxide BaSnO 3 (BSO) nanoparticles with high crystallinity were successfully synthesized by a facile peroxide-precipitate route. And then BSO was first used as an efficient electron-transporting layer in planar perovskite solar cells . Influences of the coverage, roughness and thickness of planar BSO layer on the photovoltaic performance of the solar cells were systemically investigated. It is found that better coverage of BSO layer on the transparent oxide electrodes can significant reduce current leakage and suitable thickness of electron-transporting layer is favorable to reduce series resistance. Both of them contribute to the improved power conversion efficiency of cell devices. Additionally, the BSO-based device exhibits a comparable device performances to the TiO 2 one, which can be ascribed to the efficient charge extraction as BSO/perovskite interfaces, the low charge transfer resistance and the suppressed carrier recombination. The optimized BSO-based planar perovskite solar cells exhibits power conversion efficiency of 10.96% with J sc of 17.45 mA/cm 2 , V oc of 0.986 V and FF of 0.637. Thus, this work will pave the way for employing ternary oxide as electron-transporting material for high-performance perovskite solar cells.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 10
·7799-7810
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IF 2.779
Viswanathan Munusami,Arutselvan K.,Vadivel S.,Govindasamy S.
As a two-dimensional nanostructure, reduced graphene oxide (RGO) has high specific surface area and excellent conductivity. In this report, we obtain the BaSnO 3 /RGO via facile hydrothermal method and apply it as a photoanode material in dye-sensitized solar cells. A facile hydrothermal method is used to describe the synthesis of RGO hybridization of BaSnO 3 perovskite-type oxide nanopowder and its use as a photoanode replacement in dye-sensitized solar cells. Strutural, morphological, elemental composition and optical properties of the prepared samples were analyzed by X-ray diffraction, Raman, scanning electron microscope, energy dispersive spectra, transmission electron microscope, UV-Vis spectra, photoluminescence and X-ray photoelectron spectra analysis. RGO in the BaSnO 3 photoanode can inhibit charge recombination and thus improve the power conversion efficiency (PCE) of the DSSC. Moreover, the layered structure RGO increases the dye absorption in the BaSnO 3 photoanode and the light harvesting efficiency. As a result, JSC and PCE based on BaSnO 3 /RGO photoanode have considerably increased from 8.45 to 19.51 mA cm −2 , 3.41% to 9.88%. Based on the findings, BaSnO 3 /RGO photoanodes under easily reproducible scientific/rational approach will facilitate an astonishing possibility to enhancing the PCE which confidently reinforce the probability of implementation in practical life and is indispensable for balancing the future non-renewable energy dearth.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 30
·25379-25387
·
IF 3.289
Chuande Huang,Xiaodong Wang,Xueyan Wang,Xin Liu,Quan Shi,Xiaoli Pan,Xiaogan Li
We propose a facile and economic strategy for preparing BaSnO3 particles from a room-temperature fabricated BaCO3@SnO2 core–shell precursor. The core–shell structure promoted the mixing degree of the reactants and effectively suppressed sintering of the particles, therefore, pure BaSnO3 was obtained at 800 °C, nearly 400 °C lower than traditional solid-state reaction (SSR) method, and showed better CO sensitivity than BaSnO3 prepared by SSR route. The phase transformation, morphology changes, and structure evolution from the precursor to the final BaSnO3 were systematically investigated, and a clear picture of the formation mechanism of BaSnO3 was given. Slightly La doped BaSnO3 was prepared through the same procedure as BaSnO3, which proved the availability of this method for synthesis of slightly doped BaSnO3 materials. The optical properties and total conductivity of pure and La doped BaSnO3 were compared. The results showed that the band gap of the La-doped sample was slightly increased, while the resistivity was more than six orders of magnitude lower than that of pure BaSnO3. The underlying reason was studied for the first time by directly monitoring the electron structure of Sn cations at the atomic scale using 119Sn Mössbauer spectroscopy. It was found that the introduction of La in BaSnO3 solid solution would induce electron donating to the 5s orbital of Sn4+, and Sn cations were slightly reduced. This result gave clear evidence of conduction band filling in La-doped BaSnO3, which accounted for the change in the electric and optical properties.
研究领域:
材料科学
·
化学
·
固体物理
·
表面科学
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2024
·
IF 16.8
Shuai An,Xin Gao,Mupeng Zheng,Ming Zhang,Peng Liu,Mankang Zhu,Yudong Hou
The piezoelectric charge coefficient ( d ) and transduction coefficient ( d × g ) of piezoelectric materials are the key factors that determine the power generation performance of piezoelectric nanogenerators (PENGs). However, it is becoming more difficult to achieve further large improvements in the values of these coefficients. In this work, we propose a new strategy to enhance the output performance of the PENGs by regulating the internal resistance. The internal resistance of Ba 0.85 Ca 0.15 Zr 0.1 Ti 0.9 O 3 (BCZT) PENG was reduced by substituting BaZrO 3 with low-resistivity BaSnO 3 to obtain high-performance Ba 0.85 Ca 0.15 Sn x Zr 0.1- x Ti 0.9 O 3 (BCS x Z 0.1- x T) PENGs. Although the piezoelectric properties ( d and d × g ) of BCS x Z 0.1- x T deteriorated with increasing Sn content, the power generation capability was markedly improved: the maximum current density (1.27 µA/mm 2 ) and power density (3.09 µW/mm 3 ) were obtained for BCS 0.03 Z 0.07 T PENG, reflecting increases of approximately 44% and 18% compared with those values of BCZT PENG, respectively. This work is expected to provide a new way to develop high-performance PENG materials and benefit a wide range of energy harvesting materials.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2019
·Vol. 125
·期 3
·158
·
IF 1.784
Gao Dong-Sheng,Gao Xiang-Dong,Wu Yong-Qing,Zhang Tong-Tong,Yang Jing-Nan,Li Xiao-Min
Co doped BaSnO 3 films [BaSn 1 − x Co x O 3 (0 ≤ x ≤ 0.50), i.e., BSCO] have been grown on MgO single-crystal substrates via pulsed laser deposition. Effects of the Co-doping level on the crystallinity, the microstructure, and optical properties of the BSCO films are investigated. All the BSCO films are of high crystallinity and grown epitaxially on MgO substrates. The lattice parameter of the (200) plane drops linearly with the increase of the ‘ x ’ value. The Co doping is found to increase the film roughness and the grain size, and a RMS roughness of 8.33 nm and grain size up to 100 nm are observed in the film with x = 0.50. The low Co-doping level ( x = 0.05, 0.1) has slight anti-reflection effects on the incident visible light, and the Co-doping level higher than 0.2 reduces the optical transmittance significantly. The optical bandgap shows a first-rising then falling trend with the increase of the Co content, and the lowest bandgap of 1.94 eV is realized in the BSCO film with x = 0.50.
研究领域:
材料科学
·
凝聚态物理
·
薄膜制备
·
光学材料
·
功能氧化物
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Jianxin Ma,Yongguang Liu,Jing Zhu,Honghao Liu,Yuehua Li,Zhangxing He,Lei Dai,Weiwei Meng,Ling Wang
Nitrous oxide is a potent greenhouse gas and ozone-depleting substance that requires precise monitoring at trace levels in the atmosphere. This paper reports a high-performance mixed potential sensor based on yttrium-stabilized zirconia (YSZ) electrolyte and BaSnO 3 sensing electrode (SE) for ppb-level N 2 O detection. By introducing a carbon pore-forming agent to regulate the electrode microstructure, a porous mixed conductor BaSnO 3 -SE was successfully fabricated and the sensor performance is significantly enhanced due to extending the triple phase boundary (TPB) length and promoting N 2 O gas diffusion. The experimental results show that compared with BaSnO 3 -SE without carbon additive, the introduction of 10 wt.% carbon into BaSnO 3 -SE leads to the sensitivity increase of the sensor from 29.9 mV/decade to 57.3 mV/decade, while making the detection limit lower from 100 ppb to 25 ppb at 225°C. In addition, the sensor maintains excellent stability over 30 days, exhibits excellent selectivity for common interfering gases and has a predictable oxygen partial pressure dependence. However, humidity greatly interferences the sensor response, which is attributed to higher adsorption energy of H 2 O relative to N 2 O by DFT calculations. The mixed potential response mechanism of the sensor was rigorously confirmed by combining the Tafel curve analysis and mixed potential theoretical derivation. This study proposes a simple and effective electrode structure optimization strategy, which provides an important theoretical and experimental basis for the design of high-precision N 2 O sensors.
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产品关联
DOI
高影响因子
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