JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Yanfang Tao,Yanyan Li,Meng He,Xiandong Zhao,Xiaojie Yang,Jinmao Li,Li Zhao,Yang Li,Shimin Wang
Sb 2 S 3 thin-film materials are regarded as promising candidates for next-generation thin-film solar cells due to their superior stability, simple chemical composition, cost-effectiveness, and excellent charge transport properties. In numerous studies, Sb 2 S 3 solar cells prepared with cadmium sulfide as the electron transport layer demonstrated high photovoltaic conversion efficiencies, mainly due to the key role of the CdS layer in optimizing the crystalline quality of Sb 2 S 3 thin films, regulating the crystal growth orientation, and enhancing the charge transport properties. Therefore, cadmium sulfide play a crucial role in determining the crystallinity, growth orientation, and charge transport performance of antimony sulfide films. Currently, the commonly used cadmium sources regarding the CdS preparation process are Cd(NO 3 ) 2 , CdSO 4 , CdCl 2 , and Cd(Ac) 2 . This study systematically investigates the effects of different Cd sources on the crystallization, morphology and charge transport properties of Sb 2 S 3 thin films. The results demonstrate that CdS prepared from Cd(NO 3 ) 2 significantly enhanced the crystallinity, grain morphology, band gap energy level, and photovoltaic performance of Sb 2 S 3 thin films, reaching a photovoltaic conversion efficiency of 4.23 %, which provides a solid foundation for further optimization and improvement of Sb 2 S 3 solar cells.
研究领域:
薄膜太阳能电池
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材料科学
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光伏技术
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半导体材料
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2024
·
IF 3.7
Yuren Zhao,Mingyue Sun,Fang Zhou,Ge Xu
In this work, 0.75 wt ‰ 2,3-pyridinedicarboxylic anhydride (PDA) as a novel dopant was utilized to obtain modified graphitic carbon nitride with ultratrace doping (3MCN-PDA3) by facile thermal polymerization. Characterization of the microstructure, surface state, and porosity properties of the samples indicated that 3MCN-PDA3 has a thinner sheet-like, larger-scale, and tighter lamellar stacking structure than that of pristine graphitic carbon nitride (3MCN). Based on photo/electrochemical analysis, the PDA dopant formed an extended coplanar conjugated system by anhydride-amine thermal condensation with heptazine rings, and the channels of amide covalent bonds and superconjugation of the solitary pair of electrons of the nitrogen atoms of PDA synergistically promoted the charge transport performance of 3MCN-PDA3. Under visible light, the photodegradation efficiency of Rhodamine B (RhB) over 3MCN-PDA3 reached 92.4% in 60 min and realized almost entire removal in 200 min (99.2%), 1.43 times that of 3MCN. Furthermore, the experimental results and generalized density theory calculations confirmed that PDA acts as an intermediate molecular island and constructs an efficient carrier transfer pathway between different heptazine units. The results indicate that PDA is a promising candidate to enhance the charge transfer performance through ultratrace doping in the large-scale preparation and application of the graphitic carbon nitride photocatalyst.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 27
·13037-13046
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IF 3.925
Chenhui Wei,Xinyue Zhao,Ao Zhang,Mengfei Wang,Xinran Zhang,Maoxin Zhang,Jianchuang Wang,Yi Fang,Hao Wu,Chunxiu Zhang
2- and 3,6-position bulky group substituted triphenylene discotic carboxylic esters by adjusting the steric hindrance using different alkyl and aromatic rings including cycloalkylane, adamantane, and furan were synthesized and fully investigated. Their self-assembly properties were exhaustively examined by POM, DSC, 1D WAXD, and 2D WAXD methods together with the electrostatic potential calculations. The results showed that most of them can form long-range ordered 2D columnar superlattices under the combined effects of dipole–dipole interactions and steric hindrances. The long-range ordered columnar superlattices and the perfectly aligned monodomains can be achieved by adjusting the steric hindrance effect of bulky groups. Ultimately, charge carrier mobilities were measured by the time-of-flight method and most of them can reach an order of magnitude of 10−2 cm2 V−1 s−1, which make them a category of promising candidates for organic optoelectronic devices.
研究领域:
材料科学
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有机电子学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
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IF 5.383
Zhuoyin Peng,Zhou Liu,Jianlin Chen,Yanjie Ren,Wei Li,Cong Li,Jian Chen
Single crystalline ZnO nano-array films are prepared by electrochemical deposition process , which are successfully introduced as an interlayer between FTO conductive glass substrate and TiO 2 nanoparticle films to fabricate the quantum dot sensitized solar cells. Different structure of ZnO nano-array films are modulated by the time of electrochemical deposition process, which have been mainly investigated the photovoltaic performance and charge transfer property of the solar cells. The enhancements of optical absorption properties and electron-hole separation properties on photo-electrodes have been observed by UV–Vis absorption and photoluminescence spectra. And electrochemical impedance spectra and photoluminescence decay analysis have indicated that the ZnO nano-array interlayer can effectively increase the rate of charge transfer in the quantum dot sensitized solar cells system. With the balance on the diameter, density and thickness of the ZnO nano-array interlayer, the photovoltaic conversion efficiency of FTO/ZnO/TiO 2 /CuInS 2 quantum dot sensitized solar cells have enhanced from 4.12% to 4.58% without any optimization of passivation , electrolyte and counter electrode.
研究领域:
材料科学
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物理化学
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2017
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IF 12.343
Yunlong Ma,Shan-Ci Chen,Zaiyu Wang,Wei Ma,Jinyun Wang,Zhigang Yin,Changquan Tang,Dongdong Cai,Qingdong Zheng
Two wide bandgap copolymers based on bulky indacenodithiophene (IDT) and alkoxylated benzothiadiazole units (PIDTBTO-T and PIDTBTO-TT) with the thiophene or thieno[3,2-b]thiophene (TT) π-bridge are designed and synthesized. The effect of π-bridge on the π-π packing, optical, carrier transport, nano-sized phase separation and photovoltaic properties of the copolymers are investigated in depth. In comparison with the PIDTBTO-T-based counterpart, the best performance solar cell based on PIDTBTO-TT exhibits a higher power conversion efficiency (PCE) of 8.15% which is mainly attributed to the formation of a fibrous network for the active layer based on PIDTBTO-TT. Furthermore, when a novel hybrid electron transport layer (PDIN:PFN) is introduced into a tandem solar cell using the PIDTBTO-TT-based device and a PTB7-Th-based device as the bottom and top cell components, respectively, the resulting solar cell exhibits an outstanding PCE of 11.15% with a large open circuit voltage of 1.70 V. To the best of our knowledge, the PCEs of 8.15% and 11.15% are the highest values reported to date for the single-junction and tandem solar cells using IDT-based copolymers, respectively. Our results demonstrate that the π-bridge modulation is effective in adjusting the charge carrier mobility and photovoltaic performance of IDT-based wide bandgap copolymers for single-junction and tandem devices.
研究领域:
材料科学
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能源科学
✓ 已验证
DOI
高影响因子
Sustainable Energy & Fuels
·
2021
·Vol. 5
·期 14
·3598-3605
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IF 6.367
Tangxi Chen,Min Zhou,Wen Chen,Yuyao Zhang,Siyong Ou,Yueli Liu
Halide perovskite quantum dots (HP QDs) have been widely used in the field of photocatalysis due to their excellent performance. However, the issues of lead toxicity and instability prevent their process in the photocatalysis application. Herein, the lead-free Cs2AgInCl6 perovskite quantum dots (CAIC QDs) are synthesized by the hot-injection method, and CAIC QDs@Ag composites with various Ag loading amounts are self-assembled by adjusting the Cl source in the synthesis process, which is used to improve the CO2 photoreduction efficiency by using the surface plasmon resonance (SPR) effect of Ag nanoparticles. In addition, the surface ligand density of CAIC QDs@Ag composites is regulated by the purification processing treatment to release the influence of organic ligands on the charge transport performance. It is found that the CAIC QDs@Ag composite with the optimal ligands density possesses fast electron transport and effective carrier separation efficiency, which are crucial for the improvement of the photocatalysis reaction. As a result, the CAIC QDs@Ag-2 composite after purification processing achieves the highest yield of 26.4 μmol g−1 and 28.9 μmol g−1 for CO and CH4, respectively, during the CO2 photoreduction process. In addition, there is no significant decline of CO2 photoreduction performance after the photocatalysis cycling test for 9 h, indicating the good stability of the CAIC QDs@Ag composite in the photocatalysis process.
研究领域:
材料科学
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环境科学
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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）