Article
Chemistry, Multidisciplinary
Jiale Liu, Sheng Li, Shuang Liu, Yanmeng Chu, Ting Ye, Cheng Qiu, Zexiong Qiu, Xiadong Wang, Yifan Wang, Yaqiong Su, Yue Hu, Yaoguang Rong, Anyi Mei, Hongwei Han
Summary: This study demonstrates the use of magnesium (Mg) to manage oxygen vacancies (OVs) and achieve efficient printable perovskite solar cells (PSCs) with a high-temperature mesoporous SnO2 electron transport layer (ETL). The high-temperature annealing process reduces self-doping of SnO2 by reducing OVs, while the introduced Mg promotes OV formation. The synergistic effect of Mg on OVs increases carrier density and raises the Fermi level energy of the mp-SnO2 ETL, resulting in a significant improvement in device performance.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Energy & Fuels
Neetesh Kumar, Hock Beng Lee, Barkha Tyagi, Manoj Mayaji Ovhal, Sinyoung Cho, Jong-Soo Lee, Jin-Woo Oh, Jae-Wook Kang
Summary: In recent years, researchers have used spray deposition technology to fabricate tin oxide electron transport layer (ETL) for perovskite solar cells (PSC). However, the power conversion efficiency (PCE) of spray-deposited SnO2 ETL is lower than that of spin-coated SnO2 ETL. This study demonstrates the combined use of spray deposition and genetically engineered M13 bacteriophages to deposit M13-SnO2 biohybrid ETL over large-area substrates, resulting in improved PCE of approximately 22.1% and enhanced stability of the PSCs.
Article
Chemistry, Physical
Selina Goetz, Daniella Mehanni, Neha Bansal, Bernhard Kubicek, Rachmat Adhi Wibowo, Martin Bauch, Christian Linke, Enrico Franzke, Jorg Winkler, Toby Meyer, Stephanie Narbey, David Stock, Markus Valtiner, Theodoros Dimopoulos
Summary: The study investigates the use of sputter-deposited, niobium-doped TiO2 for flexible transparent DMD electrodes, showing superior mechanical stability and potential for integration with perovskite solar cells.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Applied
Qian Chen, Changtao Peng, Lin Du, Tian Hou, Wenjing Yu, Dong Chen, Hui Shu, Dejun Huang, Xiangqing Zhou, Jinyang Zhang, Wenfeng Zhang, Haijin Li, Jiale Xie, Yuelong Huang
Summary: The introduction of RbF modification into SnO2 ETL is an effective way to improve the performance of PSCs, overcoming the shortcomings of m-SnO2 and further enhancing carrier collection efficiency.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Physical
Zhihao Li, Zhenhan Wang, Chunmei Jia, Zhi Wan, Chongyang Zhi, Can Li, Meihe Zhang, Chao Zhang, Zhen Li
Summary: This article proposes a new method for the deposition of SnO2 electron transport layers (ETLs) at room temperature, which is suitable for the fabrication of flexible solar cells. The experiments show that SnO2 films treated with amine gases are smoother and more compact compared to those treated with thermal annealing. A base-catalyzed densification mechanism is proposed to explain the experimental results. The flexible solar cells with the annealing-free SnO2 ETLs achieve high power conversion efficiencies and excellent flexibility.
Article
Chemistry, Physical
Peng Wang, Xinpeng Zhang, Zemin Zhang, Hao Ling, Lei Tao, Khumal Sohail, Xiangyu Li, Xue Fu, Xinwen Zhang, Ruixiao Wang, Yuxin Wang, Jingshan Luo, Min Jae Ko, Jiangzhao Chen, Yuelong Li
Summary: The negative pressure evaporation (NPE) method is used to quickly prepare tin dioxide (SnO2) electron transport layers (ETLs) at room temperature, which improves the surface morphology and conductivity compared to traditional thermal annealing. NPE-SnO2 enhances the fill factor and power conversion efficiency of perovskite solar cells (PSCs) and provides a universal technique for high-quality semiconductor film fabrication without thermal annealing.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ruihan Yuan, Bing Cai, Yinhua Lv, Xiang Gao, Jinwen Gu, Zhenghui Fan, Xinhang Liu, Chi Yang, Mingzhen Liu, Wen-Hua Zhang
Summary: In this study, low-temperature processed SnO2/NbOx nanocrystals were reported as efficient electron transport materials (ETMs) for planar perovskite solar cells (PSCs), achieving an impressive power conversion efficiency (PCE) of 24.01% with remarkable device stability. The NbOx layer passivates defects, promotes charge extraction, and improves perovskite film crystallinity, leading to enhanced device performance. This work provides a facile approach for low-temperature processed ETMs with boosted carrier extraction ability, offering excellent efficiency and stability for planar PSCs.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Chemistry, Physical
Thanawat Kanlayapattamapong, Watcharakiart Insri, Saowalak Homnan, Atcharawon Gardchareon, Pongsakorn Kanjanaboos, Duangmanee Wongratanaphisan, Pipat Ruankham
Summary: A stable precursor solution based on tin (II) 2-ethylhexanoate (C16H30O4Sn) has been developed and used for the deposition of reproducible and high-quality SnO2 films as electron transporting layer in perovskite solar cells. Compared to the conventional SnCl2 precursor, the new solution shows no ageing effect and can be widely used in industrial production. The perovskite solar cells prepared from the proposed route exhibit better photovoltaic performance.
SURFACES AND INTERFACES
(2023)
Review
Chemistry, Multidisciplinary
Cesur Altinkaya, Erkan Aydin, Esma Ugur, Furkan H. Isikgor, Anand S. Subbiah, Michele De Bastiani, Jiang Liu, Aslihan Babayigit, Thomas G. Allen, Frederic Laquai, Abdullah Yildiz, Stefaan De Wolf
Summary: Tin oxide (SnO2) has emerged as a promising alternative to electron-selective layers (ESLs) in perovskite solar cells (PSCs), offering advantages such as high optical transmission, high carrier mobility, and low-temperature processability. It has the potential to play a key role in large-scale deployment and manufacturing.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Sashil Chapagain, Blake Martin, Peter Armstrong, Craig L. Perkins, Matthew O. Reese, Thad Druffel, Craig A. Grapperhaus
Summary: Solution processing of flexible perovskite solar cells enables scalable, high-throughput printing of lightweight and cost-effective solar cells. However, the deposition of metal oxide charge transport layers has been limited by solvent incompatibilities and high processing temperatures. In this study, we achieve high-performance, inverted flexible perovskite solar cells by directly depositing yttrium-doped SnO2 nanoparticles functionalized with acetate on top of perovskite using blade coating. Yttrium doping improves charge extraction and reduces series resistance, leading to increased efficiency.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Sami Ullah, Muhammad Faraz Ud Din, Jafar Khan Kasi, Ajab Khan Kasi, Karol Vegso, Mario Kotlar, Matej Micusik, Matej Jergel, Vojtech Nadazdy, Peter Siffalovic, Eva Majkova, Azhar Fakharuddin
Summary: A mesoporous tin dioxide (SnO2) electron transport layer (ETL) can enhance the performance of perovskite solar cells (PSCs). We developed a bilayer architecture of the mesoporous SnO2 ETL by anodizing a metallic tin film on a fluorine-doped tin oxide (FTO) substrate in NaOH solution. By controlling the anodization voltage and time, we achieved complete coverage of the FTO substrate. The device fabricated with this bilayer mesoporous SnO2 ETL showed a 27% improvement in power conversion efficiency compared to a single layer of mesoporous SnO2.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Junyeong Lee, Jongbok Kim, Chang-Su Kim, Sungjin Jo
Summary: Charge transport layers are crucial for high-performance perovskite solar cells (PSCs), and SnO2 has been investigated as an alternative material for the traditional TiO2 electron transport layer (ETL). However, the successful application of SnO2 ETLs faces challenges such as degradation during high-temperature processes and voltage loss. To address these issues, a bilayer ETL combining low-temperature-processed mesoporous TiO2 (LT m-TiO2) and compact SnO2 was used, leading to higher power conversion efficiency in PSCs.
Article
Chemistry, Multidisciplinary
Guangwu Yang, Xinmei Li, Baohua Zhao, Chengben Liu, Teng Zhang, Zhi Li, Zhaobin Liu, Xiyou Li
Summary: In this study, a reinforced SnO2 electron transfer layer was successfully developed by embedding Ag/SnO2 NWs, which not only adjusted the energy level matching and reduced carrier recombination, but also improved the conductivity and carrier transport, achieving a significantly increased power conversion efficiency in planar perovskite solar cells.
Article
Chemistry, Multidisciplinary
Sang-Uk Lee, Hyoungmin Park, Hyunjung Shin, Nam-Gyu Park
Summary: ALD-SnO2 prepared with H2O2 shows improved photovoltaic performance and stability compared to H2O. It has reduced oxygen vacancies, leading to better electron extraction and enhanced power conversion efficiency. The operational stability is also improved, with higher PCE maintained after 1000 hours under ambient conditions.
Article
Chemistry, Physical
Chenjun Yang, Mengwei Chen, Jiaqi Wang, Haifei Lu
Summary: The study introduces the method and effect of using Zn-doped SnO2 compact layer to improve the performance of perovskite solar cells. When doped with 5%, the power conversion efficiency of the device increased by 12.44%.
INTERNATIONAL JOURNAL OF PHOTOENERGY
(2021)
Article
Architecture
Biao Zhou, Jiazhi Sun, Xukun Sun, Kai Wang, Chen Qingqing, Xuan Wang, Yajun Han
Summary: Chinese historic buildings with wooden structures are prone to fire disasters. The effects of hydrogen fluoride (HF) released during fire suppression on these buildings are unclear. Experimental results show that flame enhancement occurs at the early stage of fire suppression with various types of fire agents.
INTERNATIONAL JOURNAL OF ARCHITECTURAL HERITAGE
(2023)
Article
Mathematics, Applied
Mourad Sini, Haibing Wang
Summary: This study proposes a novel approach to recover an unknown source by measuring the wave fields generated by injecting small particles into the medium. By deriving the asymptotic expansion of the wave field and utilizing Riesz theory, the source term was successfully reconstructed.
SIAM JOURNAL ON MATHEMATICAL ANALYSIS
(2022)
Article
Materials Science, Multidisciplinary
Dengcui Yang, Yan Zhao, Xinfeng Kan, Xiaohong Chu, Hang Sun, Zhengzhi Zhao, Jiquan Sun, Haibing Wang
Summary: In this study, the microstructures, mechanical properties, and deformation behaviors of 316L stainless steel fabricated by selective laser melting (SLM) were investigated. It was found that SLM resulted in a high dislocation density, contributing to the enhancement of yield strength. Twinning occurred during the early stage of SLM deformation and underwent obvious grain rotation and twinning development during tensile tests. However, only a few transformed martensite was observed in the deformed samples, with no significant changes in grain orientation.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Chemistry, Multidisciplinary
Wenlong Shao, Haibing Wang, Feihong Ye, Cheng Wang, Chen Wang, Hongsen Cui, Kailian Dong, Yansong Ge, Ti Wang, Weijun Ke, Guojia Fang
Summary: This study presents an effective method to improve the crystalline quality and device performance of formamidinium-rich lead iodide perovskite solar cells by modulating the nucleation and crystallization of PbI2 films using PFAT.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yansong Ge, Haibing Wang, Cheng Wang, Chen Wang, Hongling Guan, Wenlong Shao, Ti Wang, Weijun Ke, Chen Tao, Guojia Fang
Summary: A unique intermediate phase engineering strategy has been developed to regulate perovskite crystallization in solar cells. By introducing AMBN to both PbI2 and ammonium salt solutions, the transformation of PbI2 films and the orientation of perovskites are controlled. This leads to a champion power conversion efficiency over 25% and improved operational stability.
ADVANCED MATERIALS
(2023)
Article
Energy & Fuels
Haibing Wang, Tianhang Zheng, Weiqing Sun, Muhammad Qasim Khan
Summary: The large-scale use of electric vehicles is crucial for achieving decarbonization in the energy sectors. However, the participation of decentralized electric vehicles in the carbon market is still a challenge. This study proposes a pricing strategy for park electric vehicle agents to guide decentralized electric vehicle charging and participation in the carbon market.
Article
Computer Science, Interdisciplinary Applications
Shiwei Sun, Gen Nakamura, Haibing Wang
Summary: This article investigates an inverse boundary value problem for the Laplace equation, focusing on reconstructing an unknown target from a single boundary measurement. Two domain sampling methods, the range test and no-response test, are studied and their numerical realizations are explored using new techniques. Numerical examples are provided to demonstrate the performance of the proposed algorithms for different shapes of unknown targets with noisy data.
JOURNAL OF COMPUTATIONAL PHYSICS
(2023)
Article
Computer Science, Hardware & Architecture
Muhammad Qasim Khan, Muhammad Mansoor Khan, Arshad Nawaz, Xu Yi, Haibing Wang, Chengmin Wang
Summary: The article presents an improved control scheme using an Interline DC Power Flow Controller (IDCPFC) to balance power flow in DC networks. The proposed system is scalable to higher voltages and powers, making it suitable for high-voltage DC transmission systems. A simulation and experimental prototype validate the effectiveness of the proposed method in controlling current flow between lines under unbalanced load conditions.
IEEE CANADIAN JOURNAL OF ELECTRICAL AND COMPUTER ENGINEERING
(2023)
Review
Materials Science, Multidisciplinary
Shan-Hai Zhao, Hai-Bing Wang, Qiang Li, Hao Ding, Cheng Qian, Qi Wang, Hui-Yu Li, Feng Jiang, Hai-Jing Cao, Chun-He Li, Yan-Yan Zhu
Summary: Reducing CO2 emission is urgent, and utilizing solar energy to convert CO2 into carbon-based chemicals is a significant advancement. Current research mostly focuses on photocatalysis or thermal catalysis, with limited exploration in photothermal catalysis. This article provides a comprehensive overview on catalyst classification (new carbon materials, oxide materials, metal sulfide materials, MOF materials, layered double hydroxide materials), their modification, and their application in CO2 reduction. The study also examines trends in developing new catalysts for this purpose.
NEW CARBON MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Shaoan Zhang, Jiawen Zeng, Huacong Ye, Zhenzhang Li, Yang Lv, Liangbin Xiong, Yihua Hu, Yang Li
Summary: Compared to conventional phosphor-converted near-infrared light-emitting diodes (NIR pc-LEDs), near-infrared persistent phosphor-converted LEDs (NIR ppc-LEDs) have broader applications in intelligent security, driverless vehicle technology, and virtual reality. However, the research on NIR ppc-LEDs is limited. In this study, a novel NIR ppc-LED with SrAl12O19: Fe3+, Mg2+, Ti4+ NIR persistent phosphors was designed. The new ppc-LED showed full-spectral responsive sensing ability and improved sensitivity in digital NIR imaging, especially in low-light conditions.
ADVANCED PHOTONICS RESEARCH
(2023)
Correction
Mathematics, Applied
Yi-Hsuan Lin, Gen Nakamura, Roland Potthast, Haibing Wang
INVERSE PROBLEMS AND IMAGING
(2023)
Article
Education & Educational Research
Guangtian Zhu, Xiaoling Su, Juan Du, Qingwei Chen, Bolong Xiong, Feng-Kuang Chiang
Summary: The study explored the effects of different scaffolds on students' physics problem solving, with MAPS scaffold showing more effective results. Future research will focus on the application of dynamic figures in physics problem-solving.
INTERACTIVE LEARNING ENVIRONMENTS
(2023)
Proceedings Paper
Computer Science, Hardware & Architecture
Leyi Chen, Junxian He, Jianyi Yu, Haibing Wang, Jing Lu, Liyuan Liu, Nanjian Wu, Cong Shi, Tian Min
Summary: This paper proposes a full custom 8T SRAM-based Processing-in-memory (PIM) architecture for high-speed energy-efficient vision chips. By modifying the computing circuits, a PIM PE array is constructed and simulated, demonstrating high energy efficiency and compact area.
2022 IEEE ASIA PACIFIC CONFERENCE ON CIRCUITS AND SYSTEMS, APCCAS
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Min Tian, Jing Lu, Haoran Gao, Haibing Wang, Jianyi Yu, Cong Shi
Summary: This paper proposes a memristor-based spiking-GAN neuromorphic hardware system to address the high computational complexity and memory access cost issues in training Generative Adversarial Network (GAN). By utilizing spiking neural networks (SNN) for the generator and discriminator of GAN, and employing memristor synapse circuits for Computing in Memory (CIM), the system can efficiently generate data samples.
2022 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS 22)
(2022)
Article
Green & Sustainable Science & Technology
Haibing Wang, Bowen Li, Muhammad Qasim Khan
Summary: This study establishes a carbon emission prediction model for electric power energy based on the elastic relationship, providing an important guarantee for achieving low carbon and clean production.
