MATERIALS LETTERS
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2021
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IF 3.423
Fei Chen,Chipeng Jiang,Like Xu,Xiaoyu Li,Qiang Shen
In view of the shortcomings of low utilization rate of disulfide cathode for thermal battery, chloride has been developed as a candidate material for thermal battery cathode. In this case, PbCl 2 was tried to be used as a cathode material for thermal batteries and tested the electrical properties of single battery. The discharge specific capacity can reach 168 mAh/g at 450 °C and 0.5 C current, the voltage plateau reaches 1.8 V, and the active material utilization rate is as high as 87.5% when the cut-off voltage is 0.5 V. The only discharge platform and high utilization rate enable PbCl 2 to be used as the active material for thermal batteries, which also provides a new direction for the chloride cathode active material for thermal batteries.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
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2017
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IF 6.395
Bo Li,Yanan Zhang,Luyuan Zhang,Longwei Yin
Inorganic CsPbBr 3 perovskite is arousing great interest following after organic-inorganic hybrid halide perovskites, and is found as a good candidate for photovoltaic devices for its prominent photoelectric property and stability. Herein, we for the first time report on PbCl 2 -tuned inorganic Cl-doped CsPbBr 3 (Cl) perovskite solar cells with adjustable crystal structure and Cl doping for enhanced carrier lifetime, extraction rate and photovoltaic performance . The effect of PbCl 2 on the morphologies, structures, optical, and photovoltaic performance of CsPbBr 3 perovskite solar cells is investigated systemically. Compared with orthorhombic CsPbBr 3 , cubic CsPbBr 3 demonstrates a significant improvement for electron lifetime (from 6.7 ns to 12.3 ns) and diffusion length (from 69 nm to 197 nm), as well as the enhanced electron extraction rate from CsPbBr 3 to TiO 2 . More importantly, Cl doping benefits the further enhancement of carrier lifetime (14.3 ns) and diffusion length (208 nm). The Cl doped cubic CsPbBr 3 (Cl) perovskite solar cell exhibits a J sc of 8.47 mA cm −2 and a PCE of 6.21%, superior to that of pure orthorhombic CsPbBr 3 (6.22 mA cm −2 and 3.78%). The improvement of photovoltaic performance can be attributed to enhanced carrier lifetime, diffusion length and extraction rates, as well as suppressed nonradiative recombination.
研究领域:
材料科学
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光伏技术
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半导体物理
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DOI
高影响因子
Journal of Materials Chemistry A
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2017
·Vol. 5
·期 16
·7423-7432
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IF 8.867
Lin Fan,Yi Ding,Jingshan Luo,Biao Shi,Xin Yao,Changchun Wei,Dekun Zhang,Guangcai Wang,Yun Sheng,Yifeng Chen,Anders Hagfeldt,Ying Zhao,Xiaodan Zhang
It has been proposed that introducing the chlorine anion into a CH3NH3PbI3 perovskite material can substantially improve the materials properties as well as the solar cell performance. To elucidate the role of chlorine in perovskite solar cells (PSCs), here we introduced PbCl2 into the precursor, and studied the chlorine configuration evolution during perovskite film formation and the associated influence on PSC performance in detail. We found that chlorine could be successfully incorporated into the precursor film in the form of PbICl or PbCl2 through a properly designed preparation, and it was conserved in the final perovskite film with a configuration of MAPbCl3, PbICl or PbCl2 depending on the fabrication process. However, no evidence of a MAPbI3−xClx phase was observed, and it is considered that MAPbI3−xClx might be metastable or possesses a higher formation energy. In addition, we demonstrate that the formation of a porous PbICl scaffold in the precursor film plays a key role in high quality perovskite film realization, benefiting from an effective stress release during structure expansion after methylammonium iodide dripping. Moreover, we propose that residual amorphous PbCl2 can effectively passivate defects in perovskite film, and dramatically improve the film’s electrical properties. Finally, n–i–p type planar PSCs with efficiencies up to 19.45% were achieved. It should be mentioned that the whole process for the formation of the PSCs is performed at less than 100 °C, which is beneficial for a wide range of applications, such as flexible and tandem solar cells.
研究领域:
材料科学
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能源科学
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光伏技术
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Aijia Zhang,Jing Liu,Yingju Yang,Yingni Yu,Dawei Wu
Lead removal from flue gas continues to be an important environmental issue. Adding sorbents in the furnace is a reliable method to control lead emission. Modified kaolin sorbent developed by a combined method of thermal pre-activation and phosphate impregnation was first applied to capture lead from flue gas. Modified kaolin exhibited higher PbCl 2 removal performance than raw kaolin at 800–1100 ℃. The best adsorption performance of raw and modified kaolin was obtained at 1000 ℃ with adsorption efficiencies of 76.72 % and 85.87 %, respectively. The adsorption capacity of modified kaolin was about 283.51 mg/g at 1000 ℃. Lead aluminosilicate and lead phosphate were produced in the adsorption reaction. O 2 was conducive to the conversion of PbCl 2 to PbO, and directly participated in the formation of lead aluminosilicate· H 2 O was in favor of the adsorption reaction, and reduced the energy barrier for dechlorination of PbCl 2 , and promoted the eutectic melting process. SO 2 and NO inhibited PbCl 2 removal due to the competitive adsorption between SO 2 /NO and PbCl 2 at the active sites. High concentration of HCl can obviously suppress the reaction of PbCl 2 and modified kaolin. Quantum chemistry calculations were conducted to identify the active sites, and to uncover the molecular-level interaction of PbCl 2 and modified kaolin. Theoretical results manifested that PbCl 2 adsorption was chemisorbed on kaolin (0 0 1) surface. The adsorption energies of PbCl 2 on raw kaolin and modified kaolin were − 124.60 and − 205.90 kJ/mol, respectively. Al, O and P atoms of modified kaolin were identified as the active sites for PbCl 2 adsorption.
研究领域:
环境科学
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材料科学
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量子化学
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2023
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IF 19
Yaru Li,Yong Zhang,Peide Zhu,Jingbai Li,Jiawen Wu,Jiyao Zhang,Xianyong Zhou,Zhengyan Jiang,Xingzhu Wang,Baomin Xu
CsPbI 2 Br perovskite solar cells (PSCs) have garnered significant attention owing to their remarkable thermal stability and desirable bandgap. However, CsPbI 2 Br-based devices still face critical challenges, particularly at the interfaces between the active layer and adjacent components. In this study, a multifunctional ZnO composition has developed as the electron transporting layer (ETL) for CsPbI 2 Br PSCs, enabling simultaneous efficient charge extraction and passivation of buried interface defects in CsPbI 2 Br. The nanocomposite, composed of PbCl 2 -modified ZnO (PbCl 2 -ZnO), facilitates the regulation of bandgap and conduction band to align the energy level of ETL and CsPbI 2 Br. Additionally, the residual PbCl 2 at the buried interface of the perovskite incorporates into the perovskite lattice, reducing I defect and thus improving film quality. The improved energy level alignment at the ETL/CsPbI 2 Br interface and the suppressed I defect-induced carrier nonradiative recombination result in a remarkable reduction in energy loss from 0.73 to 0.52 eV. Finally, the PbCl 2 -ZnO hybrid nanocomposite ETL significantly enhances the efficiency of CsPbI 2 Br PSCs, increasing it from 14.15% to 17.46%, representing one of the highest reported power conversion efficiency (PCE) values for CsPbI 2 Br PSCs. These findings demonstrate the potential of PbCl 2 -ZnO hybrid nanocomposite as an effective ETL for CsPbI 2 Br PSCs.
研究领域:
材料科学
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光电子学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2026
·Vol. 37
·期 11
·839
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IF 3.2
Wang Suting,Meng Xiangbin,Zhang Bowen,Cheng Fei,Xing Kunpeng,Bala Hari
The electron transport layer (ETL) is critical in hole-transport-layer-free all-inorganic perovskite solar cells (PSCs). Although ZnO as an ETL exhibits high electron mobility and suitable energy levels, its high surface defect density often leads to interfacial recombination losses. In this study, PbCl 2 was incorporated into the ZnO ETL to passivate interfacial defects and optimize the energy level alignment. PSCs with a structure of FTO/PbCl 2 –ZnO/CsPbBr 3 /Carbon were fabricated. The resulting carbon-based CsPbBr 3 solar cells achieved a power conversion efficiency (PCE) of 7.0%, representing a 40% improvement over devices based on the pristine ZnO ETL. Furthermore, the unencapsulated devices retained 95% of their initial PCE after 60 days of storage under ambient conditions.
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DOI
高影响因子
ORGANIC ELECTRONICS
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2019
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IF 3.495
Xin Qi,Ganghong Liu,Duo Wang,Ning Zhu,Yuqing Zhang,Zehao Zhang,Cuncun Wu,Xiangdong Li,Wei Luo,Yingqiang Li,Haozhe Hu,Zhijian Chen,Lixin Xiao,Shufeng Wang,Bo Qu
Interfacial modification as a feasible strategy to improve the properties of perovskite solar cells (PSCs) has been widely studied in recent years. In this work, PbCl 2 modification at the interface of SnO 2 /CH 3 NH 3 PbI 3 was used for CH 3 NH 3 PbI 3 -based planar PSCs. The introduction of PbCl 2 between SnO 2 and CH 3 NH 3 PbI 3 layers boosted the crystallization of perovskite film, which promoted the photovoltaic properties of corresponding PSCs. The open circuit voltage ( V OC ) and fill factor (FF) of the PbCl 2 -modified devices (1 mg/mL) were 1.11 V and 0.79, respectively, which were both higher than those of the reference devices without PbCl 2 (1.04 V and 0.76). Moreover, a steady-state power output efficiency exceeding 19% was obtained for the PbCl 2 -modified devices (1 mg/mL), which implied that PbCl 2 modification was an effective and low cost strategy for efficient PSCs.
研究领域:
材料科学
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光伏技术
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纳米科技
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表面与界面工程
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能源材料
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半导体器件
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功能材料
✓ 已验证
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2017
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IF 4.784
Fei Wu,Linna Zhu
In this work, lead chloride (PbCl 2 ) and lead acetate trihydrate (Pb(Ac) 2 ·3H 2 O) mixed precursors are introduced to prepare perovskite films. PbCl 2 has been reported to enhance crystallinity but long annealing time is required. Pb(Ac) 2 ·3H 2 O is used because it is cheap and easy to get, and lead acetate offers fast crystallization process , meanwhile the trihydrate might improve the film stability. With an optimal blending ratio of the two precursors (1:1 mol ratio), compact and full-coverage perovskite film with large grain sizes (>1 µm) are obtained, and the speed of perovskite film formation is greatly accelerated. Moreover, the film prepared in a 1:1 mol ratio of the two precursors exhibits good moisture liability for several days under around 70% RH environment. As a result, the PbCl 2 : Pb(Ac) 2 ·3H 2 O (1:1) results in the highest efficiency of 14.77%. The findings in this work provide a facile way to improve the perovskite film quality and stability.
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DOI
高影响因子
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