Article
Nanoscience & Nanotechnology
Ashish Sharma, Neha Dambhare, Jayanta Bera, Satyajit Sahu, Arup K. Rath
Summary: This study focuses on improving the volume contraction issue of QD films by partially removing OA ligands in the solution phase, leading to crack-free QD films and better performance of solar cells. The introduction of NH4SCN for partial ligand exchange shows increased doping and mobility of PbS QD films, resulting in enhanced photovoltaic efficiency.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Miguel Albaladejo-Siguan, David Becker-Koch, Elizabeth C. Baird, Yvonne J. Hofstetter, Ben P. Carwithen, Anton Kirch, Sebastian Reineke, Artem A. Bakulin, Fabian Paulus, Yana Vaynzof
Summary: Light-harvesting devices made from lead sulfide quantum dot absorbers have promising applications in third-generation photovoltaics. Passivating the quantum dot surfaces and managing the excess lead halide can improve device performance and stability.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Xing Meng, Yifan Chen, Fan Yang, Jieqi Zhang, Guozheng Shi, Yannan Zhang, Haodong Tang, Wei Chen, Yang Liu, Lin Yuan, Shaojuan Li, Kai Wang, Qi Chen, Zeke Liu, Wanli Ma
Summary: This study explores the potential of using conjugated polymers as hole-transporting layer (HTL) in lead sulfide (PbS) quantum dot solar cells. The precise regulation of the inorganic/organic interface is crucial for achieving high-performance devices. By introducing CsPbl(3) quantum dots as an interfacial layer between the PbS quantum dot active layer and the organic polymer HTL, the interface is mediated and favorable energy level alignment is achieved, resulting in improved charge extraction and reduced interfacial charge recombination. As a result, the photovoltaic performance is efficiently improved from 10.50% to 12.32%. This study may provide new guidelines for the device structural design of quantum dot optoelectronics by integrating different solution-processed semiconductors.
Article
Chemistry, Multidisciplinary
Mingyu Li, Shiwu Chen, Xinzhao Zhao, Kao Xiong, Bo Wang, Usman Ali Shah, Liang Gao, Xinzheng Lan, Jianbing Zhang, Hsien-Yi Hsu, Jiang Tang, Haisheng Song
Summary: Infrared solar cells incorporating PbS colloidal quantum dots show high efficiency and stability under full-spectrum illumination, with novel energy-level aligned ZnO thin film and hybrid ligand passivation strategies boosting the performance. The development of matched charge extraction and QD passivation approaches is expected to advance QD optoelectronics technology.
Article
Chemistry, Multidisciplinary
Ciyu Ge, Erqi Yang, Xinzhao Zhao, Can Yuan, Sen Li, Chong Dong, Yingfeng Ruan, Liuchong Fu, Yuming He, XiangBin Zeng, Haisheng Song, Bin Hu, Chao Chen, Jiang Tang
Summary: This study proposes a simple method to fabricate window materials for infrared solar cells using hydrogen-doped indium oxide films prepared by room temperature magnetron sputtering. The low-temperature annealed conductive electrodes exhibit high mobility and infrared transmittance, improving the performance of the solar cells.
Article
Nanoscience & Nanotechnology
David Becker-Koch, Miguel Albaladejo-Siguan, Yvonne J. Hofstetter, Olga Solomeshch, Darius Pohl, Bernd Rellinghaus, Nir Tessler, Yana Vaynzof
Summary: Efficiency of PbS quantum dot solar cells has increased, with potential for industrial applications. The use of organic layers like PTAA can improve efficiency while avoiding stability issues associated with EDT and MoO3 layers.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Xinlu Liu, Ting Fu, Jianping Liu, Yinglin Wang, Yuwen Jia, Chao Wang, Xiaofei Li, Xintong Zhang, Yichun Liu
Summary: In this study, an efficient surface chemistry optimization of PbS CQDs for photovoltaics was achieved by annealing the CQD solution with concentrated lead halide ligands after conventional solution-phase ligand exchange. This strategy not only minimized CQD polydispersity and decreased aggregation, but also decreased trap-state density, leading to highly efficient solar cells. The research provides meaningful guidance for controlling ligand reactivity and realizing subtly purified CQDs.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Energy & Fuels
Meibo Xing, Yuyao Wei, Ruixiang Wang, Zhentao Zhang
Summary: In this study, Mg-doped ZnO (ZMO)/Lead sulfide (PbS) quantum dot (QD) heterojunction solar cells were successfully fabricated via layer-by-layer spin-coating method. It was found that seven spin-coating cycles of PbS active layers yielded the best performance for the device, achieving a power conversion efficiency (PCE) of 9.46%. Moreover, the highest PCE of 12% was achieved at a working temperature of 273 K, demonstrating the stability of PbS QDSCs after over 30 days of storage in air.
Article
Chemistry, Multidisciplinary
Stefan W. Tabernig, Lin Yuan, Andrea Cordaro, Zhi Li Teh, Yijun Gao, Robert J. Patterson, Andreas Pusch, Shujuan Huang, Albert Polman
Summary: We have designed an optically resonant bulk heterojunction solar cell to study the optoelectronic properties of nanostructured p-n junctions. By optimizing the nanoscale pattern, we were able to improve the efficiency of the solar cell by enhancing the absorption and charge-carrier extraction behavior. Our experiments and simulations showed significant improvement in infrared response and current gain in the patterned solar cell compared to the planar reference, demonstrating the importance of nanostructured geometries in enhancing solar cell performance.
Article
Chemistry, Multidisciplinary
Wei Chen, Renjun Guo, Haodong Tang, Kerstin S. Wienhold, Nian Li, Zhengyan Jiang, Jun Tang, Xinyu Jiang, Lucas P. Kreuzer, Haochen Liu, Matthias Schwartzkopf, Xiao Wei Sun, Stephan Roth, Kai Wang, Baomin Xu, Peter Mueller-Buschbaum
Summary: Research reveals that the degradation of structure in PbS QD ink-based solar cells during operation leads to a decrease in inter-dot distance and an increase in spatial disorder, resulting in broadening of energy state distribution and reduction in open-circuit voltage V-oc, causing device degradation.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Anju Elsa Tom, Ajith Thomas, Ajeesh Kumar Somakumar, Libin Kuriakose, V. V. Ison
Summary: A hybrid solid-state ligand exchange strategy was developed using inorganic ligand TBAI and organic ligand EDT, which resulted in improved performance of QDs films. The method integrates the benefits of both ligands and resolves the incomplete solid-state ligand exchange, leading to enhanced power conversion efficiency.
Article
Materials Science, Multidisciplinary
Minwoo Nam
Summary: A new OSC device architecture was demonstrated in this study by incorporating PbS colloidal quantum dots to improve photon harvesting and charge transfer. The PbS QD layer enhanced the optical property of the OSCs and showed enhanced charge transfer and suppressed recombination loss through hybrid organic-inorganic interfacial contacts.
ORGANIC ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Yang Liu, Hao Wu, Guozheng Shi, Yusheng Li, Yiyuan Gao, Shiwen Fang, Haodong Tang, Wei Chen, Tianshu Ma, Irfan Khan, Kai Wang, Changlei Wang, Xiaofeng Li, Qing Shen, Zeke Liu, Wanli Ma
Summary: By introducing multifunctional ligands to coordinate the complicated CQDs surface with the thermodynamically optimal configuration, a synergistic passivation is performed in the direct synthesis of conductive PbS CQD inks. This leads to an order lower surface trap density and beneficial doping behavior, resulting in high V-oc and power conversion efficiency (PCE) for the reported PbS CQD solar cells.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Linlin Zhang, Cuiting Kang, Guizhi Zhang, Zhenxiao Pan, Zhaoshuai Huang, Shuaihang Xu, Huashang Rao, Hongbin Liu, Shengfan Wu, Xin Wu, Xiaosong Li, Zonglong Zhu, Xinhua Zhong, Alex K. -Y. Jen
Summary: An anion/cation synergy strategy is proposed to improve the structural stability of CsPbI(3) QDs and reduce defects. Zn-doped CsPbI3(QDs show better thermodynamic stability and higher PLQY compared to pristine CsPbI(3) QDs. This strategy enables CsPbI(3) QDSCs to achieve a power conversion efficiency over 16%.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Weyde M. M. Lin, Nuri Yazdani, Olesya Yarema, Maksym Yarema, Mengxia Liu, Edward H. Sargent, Thomas Kirchartz, Vanessa Wood
Summary: Significant performance improvements have been achieved in nanocrystal-based solar cells in the past decade, but challenges such as surface recombination, dopants, and electronic defects still limit their potential. Strategies for enhancing device performance include reducing dopants, controlling doping and electronic structure, and optimizing interfaces.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Shahid Zaman, Ya-Qiong Su, Chung-Li Dong, Ruijuan Qi, Lei Huang, Yanyang Qin, Yu-Cheng Huang, Fu-Min Li, Bo You, Wei Guo, Qing Li, Shujiang Ding, Bao Yu Xia
Summary: The study of a low-platinum nanoalloy-implanted graphene catalyst for fuel cells shows high efficiency and durability, providing important insights for the future development of fuel cell technology.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Materials Science, Multidisciplinary
Jihong Zheng, Liangxin Zhu, Zhitao Shen, Fumin Li, Lanyu Ling, Huilin Li, Chong Chen
Summary: This study found that adding appropriate concentrations of CdS and Cd(SCN2H4)(2)Cl-2 to the CH3NH3PbI3 active layer can improve the photovoltaic performance and stability of perovskite solar cells (PSCs). CdS and Cd(SCN2H4)(2)Cl-2 can passivate defects in perovskite crystals, enhancing charge transport efficiency. This research provides new insights for improving the performance of perovskite solar cells.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2022)
Article
Multidisciplinary Sciences
Liangliang Zhai, Yujing Feng, Fumin Li, Liping Zhai
Summary: This paper examines the impact of the 2014 pilot project of accelerated depreciation of fixed assets on enterprise investment efficiency and its mechanism using a Propensity Score Matching-Difference in Differences (PSM-DID) model based on data from Chinese listed companies. The findings suggest that the policy significantly inhibits investment efficiency, particularly for small and medium-sized enterprises, non-state-owned enterprises, and asset-heavy enterprises. The mechanism test reveals the reason behind the policy's short-term easing of financing constraints but inhibition of investment efficiency. Several robustness tests confirm the validity of the basic conclusions.
Article
Multidisciplinary Sciences
Hong-chao Li, Qiang Wan, Congcong Du, Jiafei Zhao, Fumin Li, Ying Zhang, Yanping Zheng, Mingshu Chen, Kelvin H. L. Zhang, Jianyu Huang, Gang Fu, Sen Lin, Xiaoqing Huang, Haifeng Xiong
Summary: This study develops a two-step approach to prepare PdSn nanowire catalysts, which exhibit superior reactivity and high producibility in the synthesis of H2O2.
NATURE COMMUNICATIONS
(2022)
Article
Energy & Fuels
Mengxin Wang, Mengqi Jin, Chong Chen, Fumin Li, Yanjing Rong, Rong Liu, Huilin Li, Yan Feng, Zhitao Shen
Summary: Reducing nonradiative recombination caused by defects through interface engineering is crucial for improving the efficiency of two-step-processed perovskite solar cells (PSCs). A new strategy is proposed in this study by predepositing CNT:SnO2 on PbI2 film to improve the crystallization and quality of perovskite films and reduce defects and nonradiative recombination. Additionally, CNT:SnO2 changes the Fermi energy level of the perovskite film, accelerating charge separation and transport.
Article
Chemistry, Physical
Yu Li, Hangyu Hu, Mengqi Jin, Yan Feng, Zhitao Shen, Ying Liu, Rong Liu, Huilin Li, Fumin Li, Chong Chen
Summary: By adding Au clusters and their ligands m-MBT to perovskite, the light absorption ability of perovskite can be effectively enhanced, and the defects can be passivated and charge recombination can be suppressed, resulting in a significant improvement in the performance and stability of PSCs.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Engineering, Environmental
Dong Yang, Yujuan Weng, Zhitao Shen, Mengqi Jin, Hu Shen, Qing Du, Jihong Zheng, Fumin Li, Chong Chen
Summary: A novel In(SCN2H4)3Cl3 complex diffusion doping strategy was proposed to address the defects and band alignment issues at the interface of perovskite and hole transport layer (HTL) in inverted perovskite solar cells (PSCs). The In(SCN2H4)3Cl3 effectively passivates the defects in the perovskite layer and promotes charge separation and transport properties in PSCs. The optimized inverted PSCs with CH3NH3PbI3:In(SCN2H4)3Cl3 layer achieve a high efficiency of 21.25% and improved long-term stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Qian-Ming He, Jun-Ru Tao, Dian Yang, Yi Yang, Ming Wang
Summary: In this study, sandwiched Cu/PDMS/Cu composites with periodic micro-wrinkles were fabricated by depositing copper on stretched PDMS substrates. The effect of micro-wrinkles on electromagnetic interference shielding effectiveness was evaluated through simulation and experimental study. The results show that micro-wrinkles can enhance the shielding effectiveness of the composites and have potential applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Correction
Multidisciplinary Sciences
Lei Huang, Min Wei, Ruijuan Qi, Chung-Li Dong, Dai Dang, Cheng-Chieh Yang, Chenfeng Xia, Chao Chen, Shahid Zaman, Fu-Min Li, Bo You, Bao Yu Xia
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Mengqi Jin, Chong Chen, Fumin Li, Zhitao Shen, Hu Shen, Dong Yang, Rong Liu, Huilin Li, Ying Liu, Chao Dong, Mingtai Wang
Summary: The electrical properties of 2D perovskite layer and hole transport layer (HTL) in 2D/3D perovskite solar cells can be enhanced by using SnS1-xO2x, resulting in improved power conversion efficiency and stability.
Article
Engineering, Marine
Zhen Guo, Chuang Ma, Yi Liu, Fumin Li, Chenfeng Li
Summary: The fire safety of a ship structure is evaluated using a fire dynamics algorithm and a structural-thermal coupling method. The failure characteristics, stress distribution, and deformation modes of a two-story cabin under different heat release rates and fire locations are studied. The results show that increasing the heat release rate in the side chamber expands the failure path of the cabin, and the spatial layout significantly influences the damage location when a high-power fire occurs in the middle chamber.
JOURNAL OF MARINE ENGINEERING AND TECHNOLOGY
(2023)
Article
Chemistry, Organic
Maocai Xu, Jiazhuang Tian, Yanhua Yang, Gaozhang Gou, Fumin Li, Lin Shao, Kexin Chi
Summary: In order to meet the demand for data storage security in the rapid development of information, a difluoroboron compound (PyTPABF(2)) based on pi-conjugated triphenylamine was designed and synthesized successfully. PyTPABF2 displayed positive solvatochromism, intramolecular charge transfer, aggregation-induced emission, and high contrast mechanofluorochromic performance. The synthesized PyTPABF(2) powders exhibited bright green fluorescence (533 nm), which could switch to khaki (556 nm) under external mechanical stimulation and recover to the original state after fuming. XRD measurement confirmed that this phenomenon resulted from a phase transformation between the crystalline and amorphous states. Importantly, PyTPABF(2)-based data security paper enabled rewritable storage of information. This work was significant for the rational design of smart luminescent materials.
CHINESE JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Applied
Qi Xue, Zhe Wang, Yu Ding, Fumin Li, Yu Chen
Summary: Electrocatalysis is a process that is influenced by the interface and the activity of the catalyst relies on the adsorption/desorption behaviors of the reactants/intermediates/products on the active sites. Chemical functionalization of noble metal surfaces with polyamines (PAM) is an effective strategy to tune the electrocatalytic performance of noble metal nanocrystals. This article introduces the PAM-assisted synthesis mechanism of noble metal nanocrystals and describes the effects of adsorbed PAM on various aspects of noble metal-based catalysts, as well as their applications in important reactions.
CHINESE JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
Mengqi Jin, Huilin Li, Qiang Lou, Qing Du, Qingsong Huang, Zhitao Shen, Fumin Li, Chong Chen
Summary: By incorporating CNT:TiO2 additives into 3D perovskite solar cells, the efficiency and stability of 2D/3D perovskite solar cells can be improved. CNT:TiO2 materials can passivate the defect state of the 3D perovskite layer, enhance charge mobility in the 3D layer, and increase conductivity in the 2D layer, leading to improved overall performance of perovskite solar cells.
Article
Nanoscience & Nanotechnology
Jihong Zheng, Fumin Li, Chong Chen, Qing Du, Mengqi Jin, Huilin Li, Mingxing Ji, Zhitao Shen
Summary: Incorporating PbSO4(PbO)(4) quantum dots into spiro-OMeTAD as the hole transport layer can effectively improve the long-term conductivity and moisture stability of high-efficiency perovskite solar cells, while also enhancing the power conversion efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2022)
