Review
Materials Science, Multidisciplinary
Weiwei Dong, Junjie Fu, Jin Yang, Shu Ren, Haonan Zhu, Yusen Wang, Jianchao Hao, Yange Zhang, Zhi Zheng
Summary: This review summarizes the current research status on the fabrication methods, device structure selection, design, and optimization of Ag2S thin films. Insights into achieving high-efficiency Ag2S devices by improving the crystallinity of the absorber layer and reducing interface defects are discussed.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
S. Monika, M. Mahalakshmi, K. Veerathangam, M. Senthil Pandian, P. Ramasamy
Summary: CuS is widely used as a counter electrode material in QDSSCs. In this study, carbon black was used as a scaffolding material to improve the performance of CuS counter electrode. The results showed that the carbon black significantly enhanced the power conversion efficiency of QDSSC.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Physical
Hyemin Jo, Jai Kyeong Kim, Junghwan Kim, Tae-Yeon Seong, Hae Jung Son, Jeung-Hyun Jeong, Hyeonggeun Yu
Summary: By using atomic layer deposition (ALD) of ZnO buffer at a low temperature, the interfacial band alignment can be enhanced, resulting in an increased photocurrent density above 35 mA/cm(2) at the band gap of PbS quantum dots of 1.18 eV. The electron barrier with ALD-ZnO is 0.55 eV lower compared to sol-gel ZnO, and the photoactivation of shallow gap states in ALD-ZnO induces band bending for efficient electron tunneling from PbS to ZnO, leading to improved device lifetime under constant illumination at 1-sun.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Margherita Biondi, Min-Jae Choi, Zhibo Wang, Mingyang Wei, Seungjin Lee, Hitarth Choubisa, Laxmi Kishore Sagar, Bin Sun, Se-Woong Baek, Bin Chen, Petar Todorovic, Amin Morteza Najarian, Armin Sedighian Rasouli, Dae-Hyun Nam, Maral Vafaie, Yuguang C. Li, Koen Bertens, Sjoerd Hoogland, Oleksandr Voznyy, F. Pelayo Garcia de Arquer, Edward H. Sargent
Summary: This study introduces a new method to improve facet alignment in CQD solids by adjusting the surface of CQDs, leading to enhanced coupling and improved performance of optoelectronic devices. This approach results in a 10x increase in hole mobility compared to control CQD solids, and enables photodiodes with 70% external quantum efficiency and rapid response times.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yimin Jin, Shujie Jiao, Dongbo Wang, Shiyong Gao, Jinzhong Wang
Summary: By decorating ZnO nanorods with Ag2S/ZnS, the photoelectric properties of ZnO have been improved, leading to an increase in photocurrent in photodetectors. Additionally, extending the immersion time can further enhance the photocurrent.
Article
Materials Science, Ceramics
Peng Qiu, Huiyun Wei, Qianming Huang, Meina Yu, Yuyu Hu, Xiaoli Zhu, Heng Liu, Xinhe Zheng
Summary: In this study, GaN is used for the first time to modulate the charge dynamics of QDSCs. An ultrathin GaN layer is coated on the surface of TiO2 photoanode and QDs using the PEALD approach, resulting in a stepped energy level alignment and a type-II core-shell QD/GaN structure. The GaN layer effectively inhibits reverse transfer of photogenerated electrons and improves connection between TiO2 and QDs. QDSCs with a 0.68 nm-thick GaN layer achieve increased current density and enhanced efficiency, showcasing the potential advantages of GaN as a replacement for TiO2 in QDSCs.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
In-Rok Jo, Young-Hoon Lee, Hyunsoo Kim, Kwang-Soon Ahn
Summary: Nitrogen-doped graphene quantum dots (N-GQDs) play a crucial role in enhancing the performance of quantum dot-sensitized solar cells by boosting light absorption, facilitating electron transportation, and suppressing charge recombination, leading to a significantly improved power conversion efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Han Song, Yu Lin, Zhengyan Zhang, Huashang Rao, Wenran Wang, Yueping Fang, Zhenxiao Pan, Xinhua Zhong
Summary: A new secondary deposition approach was developed to increase quantum dot (QD) loading and enhance the performance of QD sensitized solar cells (QDSCs) without introducing new recombination centers. By creating a metal oxyhydroxide layer around QD presensitized photoanodes, the photovoltage, fill factor, and efficiency of the ZCISSe QDSCs were remarkably improved. This innovative method achieved a new certified power conversion efficiency (PCE) record of 15.20% for liquid-junction QDSCs.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Energy & Fuels
Rabia Bashir, Muhammad Kashif Bilal, Amna Bashir, Awais Ali
Summary: Lead selenide quantum dots (PbSe QDs) possess remarkable features due to their adjustable bandgap and low-temperature synthesis. In addition to the efficient QDs active layer, the electron transport layer (ETL) also plays a significant role in achieving high-efficiency colloidal quantum dots solar cells (CQDSCs). Undoped and 1-3% lithium-doped zinc oxide (LZO) sol-gel is introduced as an ETL and incorporated into CQDSCs to achieve high efficiency. The results show that 2 wt% Li-doping in ZnO ETL significantly improves the conduction band minimum and transmittance, while reducing oxygen defect densities and film roughness compared to other ETLs. Furthermore, PbSe CQDSCs with 2 wt% Li-doped ZnO ETL demonstrate the highest power conversion efficiency (PCE) of 10.80%, which is 7.5% higher than ZnO-based PbSe CQDSCs. Similarly, LZO-based PbSe CQDSCs with 2 wt% Li-doping exhibit long-term stability for approximately 40 days. Li-doping in ZnO offers a promising approach for low-cost, high-performance CQDSCs.
Article
Chemistry, Physical
C. Rosiles-Perez, S. Sidhik, L. Ixtilico-Cortes, F. Robles-Montes, T. Lopez-Luke, A. E. Jimenez-Gonzalez
Summary: By using Bi2S3 quantum dots as the sensitizer material, a high short-circuit current density was achieved in the QDSSC. The addition of 1,2,3-propanetriol as a complexing agent significantly increased the density sensitization of Bi2S3 QDs, leading to an improvement in J(sc).
MATERIALS TODAY ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Irem Kolay, Demet Asil
Summary: This paper investigates a donor-acceptor type bulk nano-heterojunction layer consisting of PbSe quantum dots and PbSe nanorods as the light-absorbing active layer. By optimizing the donor-acceptor interface and choosing an appropriate hole transport layer, the solar cell with high multi-exciton-generation efficiency is achieved.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Wei Wang, Yiling Xie, Fangfang He, Yuan Wang, Weinan Xue, Yan Li
Summary: In quantum dot-based solar cells (QDSCs), the balance between QD loading and TiO2 film thickness significantly affects the performance. A relatively thin photoanode prepared by a cationic surfactant-assisted multiple deposition procedure achieved a high QD loading comparable to that of the commonly used thick photoanode. Under optimized conditions, the Zn-Cu-In-Se and Zn-Cu-In-S based QDSCs showed a comparable power conversion efficiency (PCE) to those with significantly thicker photoanodes (over 25.0 μm).
GREEN ENERGY & ENVIRONMENT
(2023)
Review
Chemistry, Multidisciplinary
Qian Zhao, Rui Han, Ashley R. Marshall, Shuo Wang, Brian M. Wieliczka, Jian Ni, Jianjun Zhang, Jianyu Yuan, Joseph M. Luther, Abhijit Hazarika, Guo-Ran Li
Summary: Colloidally grown nanosized semiconductors, especially colloidal quantum dots (QDs), have great potential as optoelectronic materials. These materials show excellent properties in solar photovoltaics and display technology, with low cost and high performance. This article explores the possibilities of different deposition techniques to bring QD-based solar cells to an industrial level, and discusses the challenges faced by perovskite QD solar cells in achieving large-area fabrication.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
G. Nagaraj, Mustafa K. A. Mohammed, Masoud Shekargoftar, P. Sasikumar, P. Sakthivel, G. Ravi, M. Dehghanipour, Seckin Akin, Ahmed Esmail Shalan
Summary: This study introduces a method of using graphene quantum dots to modify the SnO2/ZnO layer to enhance the performance of perovskite solar cells, significantly improving opto-electronic properties and increasing power conversion efficiency. Devices with the modified electron transport layer show higher open-circuit voltage and long-term stability.
MATERIALS TODAY ENERGY
(2021)
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
Chemistry, Analytical
Yulia Plekhanova, Sergei A. Tikhonenko, Alexey Dubrovsky, Alexander L. Kim, Egor Musin, Gou-Jen Wang, Iren E. Kuznetsova, Vladimir V. Kolesov, Anatoly N. Reshetilov
ANALYTICAL SCIENCES
(2019)
Article
Engineering, Biomedical
Martha B. Alvarez-Elizondo, Ching Wen Li, Anat Marom, Yen-Ting Tung, Gilad Drillich, Yam Horesh, Shu Ching Lin, Gou-Jen Wang, Daphne Weihs
MEDICAL ENGINEERING & PHYSICS
(2020)
Article
Chemistry, Physical
Tien-Fu Chu, Raja Rajendran, Iren Kuznetsova, Gou-Jen Wang
JOURNAL OF POWER SOURCES
(2020)
Article
Nanoscience & Nanotechnology
Fang-Yu Lin, Pei-Yuan Lee, Tien-Fu Chu, Chang- Peng, Gou-Jen Wang
Summary: The study introduces a Pt/Au alloy electrode for enzyme-free glucose detection in a neutral environment with excellent specificity and sensitivity, showing feasibility for clinical applications.
INTERNATIONAL JOURNAL OF NANOMEDICINE
(2021)
Article
Engineering, Electrical & Electronic
Cheng-Yi Li, Sandy Huey-Jen Hsu, Cheng-Chung Chang, Gou-Jen Wang
Summary: The study introduced a novel method for detecting direct bilirubin by Raman spectroscopy using composite SERS chips, which significantly improved the detection limit, covered a wide detection range, and showed good reproducibility.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Analytical
Wei-Jhen Wang, Min-Chuan Chou, Ya-Jane Lee, Wei-Li Hsu, Gou-Jen Wang
Summary: A novel electrochemical immunosensor based on a gold nanoparticle electrode was proposed for accurate detection of NGAL in cat urine samples. The sensing scheme demonstrated a wide detection range and low limit of detection, enabling the differentiation of kidney health status.
Article
Engineering, Electrical & Electronic
Po-Min Chung, Ying-Ting Lin, Gou-Jen Wang
Summary: An Au/Ni nanopillar microarray electrode was developed for detecting red blood cell (RBC) concentrations. The electrode was fabricated using AAO as the template and had a diameter of 50 µm. The detection scheme showed two linear detection ranges and high recovery rates in whole blood sample tests, indicating its feasibility for RBC concentration detection in real blood samples.
IEEE SENSORS JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Ying-Ting Lin, Yen-Ting Tung, Jhen-Yuan Wong, Gou-Jen Wang
Summary: To study biochemical and mechanical properties, it is necessary to engineer customized capillary networks that match the characteristics of different organs. A scaffold-wrapping approach was used to create a perfusable capillary network by culturing human umbilical vein endothelial cells on a patterned fibrin scaffold and encapsulating it in collagen gel to form a vascular lumen. The dimensions of the capillary network could be controlled at the micrometer level.
MATERIALS & DESIGN
(2023)
Article
Engineering, Electrical & Electronic
Chun-Chiang Tseng, Ying-Ting Lin, Gou-Jen Wang
Summary: This study developed a novel electrochemical glycosylated hemoglobin (HbA1c) immunosensor based on a nanostructured electrode. The HbA1c antibodies were successfully immobilized on the electrode, and the sensor showed a linear detection range from 2500 to 10,000 ng/mL with a low limit of detection of 2253 ng/mL. The developed HbA1c-sensing chip offers simple operation, low cost, short detection time, and high feasibility for clinical application.
IEEE SENSORS JOURNAL
(2023)
Article
Physics, Applied
Smruti R. Sahoo, Chun-Ta Huang, Kunju Tsai, Gou-Jen Wang, Cheng-Chung Chang
Summary: In this study, a single-component, multiscale, three-dimensional SERS substrate was fabricated using silver nanowires packing. The substrate exhibited strong Raman enhancement effect and isotropic localized surface plasmon resonance. Experimental results showed that the substrate had high efficiency and sensitivity for detecting SARS-CoV-2-related biomolecules.
APPLIED PHYSICS REVIEWS
(2023)
Article
Materials Science, Multidisciplinary
Zi-Jun Liu, Shu-Ching Lin, Pei-Yuan Lee, Ying-Ting Lin, Zi-Lun Lai, Cheng-Chung Chang, Gou-Jen Wang
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
(2020)
Article
Biochemical Research Methods
Ying-Ting Lin, Sung-Tzu Chen, Jui-Chih Chang, Ren-Jie Teoh, Chin-San Liu, Gou-Jen Wang
Article
Materials Science, Biomaterials
Chien-Hui Su, Jyun-Wei Chen, Li-Da Chen, Jui-Chih Chang, Chin-San Liu, Cheng-Chung Chang, Gou-Jen Wang
JOURNAL OF MATERIALS CHEMISTRY B
(2019)
Article
Biochemistry & Molecular Biology
Anatoly Reshetilov, Yulia Plekhanova, Sergei Tarasov, Sergei Tikhonenko, Alexey Dubrovsky, Alexander Kim, Vadim Kashin, Andrey Machulin, Gou-Jen Wang, Vladimir Kolesov, Iren Kuznetsova
Article
Electrochemistry
Yuan-Chih Lin, Stephen Liao, Thomas Huang, Gou-Jen Wang
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2019)
Article
Chemistry, Physical
Tianyu Chen, Zhibin Lu, Guangjin Zeng, Yongmin Xie, Jie Xiao, Zhifeng Xu
Summary: The study introduces a high-performance LSGM electrolyte-supported tubular DC-SOFC stack for portable applications, which shows great potential in developing into high-performing, efficient, and environmentally friendly portable power sources for distributed applications.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Wenbin Tong, Yili Chen, Shijie Gong, Shaokun Zhu, Jie Tian, Jiaqian Qin, Wenyong Chen, Shuanghong Chen
Summary: In this study, a three-dimensional porous NiO interface layer with enhanced anode dynamics is fabricated, forming a Schottky contact with the zinc substrate, allowing rapid and uniform zinc plating both inside and below the interface layer. The resulting NiO@Zn exhibits exceptional stability and high capacity retention.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yafeng Bai, Kaidi Li, Liying Wang, Yang Gao, Xuesong Li, Xijia Yang, Wei Lu
Summary: In this study, a flexible zinc ion supercapacitor with gel electrolytes, porous alpha-MnO2@reduced graphene oxide cathode, and activated carbon/carbon cloth anode was developed. The device exhibits excellent electrochemical performance and stability, even at low temperatures, with a high cycle retention rate after 5000 cycles.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Anmol Jnawali, Matt D. R. Kok, Francesco Iacoviello, Daniel J. L. Brett, Paul R. Shearing
Summary: This article presents the results of a systematic study on the electrochemical performance and mechanical changes in two types of commercial batteries with different anode chemistry. The study reveals that the swelling of anode layers in batteries with silicon-based components causes deformations in the jelly roll structure, but the presence of a small percentage of silicon does not significantly impact the cycling performance of the cells within the relevant state-of-health range for electric vehicles (EVs). The research suggests that there is room for improving the cell capacities by increasing the silicon loading in composite anodes to meet the increasing demands on EVs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yohandys A. Zulueta, My Phuong Pham-Ho, Minh Tho Nguyen
Summary: Advanced atomistic simulations were used to study ion transport in the Na- and K-doped lithium disilicate Li2Si2O5. The results showed that Na and K doping significantly enhanced Li ion diffusion and conduction in the material.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Zongying Han, Hui Dong, Yanru Yang, Hao Yu, Zhibin Yang
Summary: An efficient phase inversion-impregnation approach is developed to fabricate BaO-decorated Ni8 mol% YSZ anode-supported tubular solid oxide fuel cells (SOFCs) with anti-coking properties. BaO nanoislands are successfully introduced inside the Ni-YSZ anode, leading to higher peak power densities and improved stability in methane fuel. Density functional theory calculations suggest that the loading of BaO nanoislands facilitates carbon elimination by capturing and dissociating H2O molecules to generate OH.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Suresh Mamidi, Dan Na, Baeksang Yoon, Henu Sharma, Anil D. Pathak, Kisor Kumar Sahu, Dae Young Lee, Cheul-Ro Lee, Inseok Seo
Summary: Li-CO2 batteries, which utilize CO2 and have a high energy density, are hindered in practical applications due to slow kinetics and safety hazards. This study introduces a stable and highly conductive ceramic-based solid electrolyte and a metal-organic framework catalyst to improve the safety and performance of Li-CO2 batteries. The optimized Li-CO2 cell shows outstanding specific capacity and cycle life, and the post-cycling analysis reveals the degradation mechanism of the electrodes. First-principles calculations based on density functional theory are also performed to understand the interactions between the catalyst and the host electrode. This research demonstrates the potential of MOF cathode catalyst for stable operation in Li-CO2 batteries.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Ganghua Xiang, Zhihuan Qiu, Huilong Fei, Zhigang Liu, Shuangfeng Yin, Yuen Wu
Summary: In this study, a CeFeOx-supported Pt single atoms and subnanometric clusters catalyst was developed, which exhibits enhanced catalytic activity and stability for the preferential oxidation of CO in H2-rich stream through synergistic effect.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Dimitrios Chatzogiannakis, Marcus Fehse, Maria Angeles Cabanero, Natalia Romano, Ashley Black, Damien Saurel, M. Rosa Palacin, Montse Casas-Cabanas
Summary: By coupling electrochemical testing to operando synchrotron based X-ray absorption and powder diffraction experiments, blended positive electrodes consisting of LiMn2O4 spinel (LMO) and layered LiNi0.5Mn0.3Co0.2O2 (NMC) were studied to understand their redox mechanism. It was found that blending NMC with LMO can enhance energy density at high rates, with the blend containing 25% LMO showing the best performance. Testing with a special electrochemical setup revealed that the effective current load on each blend component can vary significantly from the nominal rate and also changes with SoC. Operando studies allowed monitoring of the oxidation state evolution and changes in crystal structure, in line with the expected behavior of individual components considering their electrochemical current loads.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Chiara Cementon, Daniel Dewar, Thrinathreddy Ramireddy, Michael Brennan, Alexey M. Glushenkov
Summary: This Perspective discusses the specific power and power density of lithium-ion capacitors, highlighting the fact that their power characteristics are often underestimated. Through analysis, it is found that lithium-ion capacitors can usually achieve power densities superior to electrochemical supercapacitors, making them excellent alternatives to supercapacitors.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Weihao Wang, Hao Yu, Li Ma, Youquan Zhang, Yuejiao Chen, Libao Chen, Guichao Kuang, Liangjun Zhou, Weifeng Wei
Summary: This study achieved an improved electrolyte with excellent low-temperature and high-voltage performance by regulating the Li+ solvation structure and highly concentrating it. The electrolyte exhibited outstanding oxidation potential and high ionic conductivity under low temperature and high voltage conditions, providing a promising approach for the practical application of high-voltage LIBs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Martin Bures, Dan Gotz, Jiri Charvat, Milos Svoboda, Jaromir Pocedic, Juraj Kosek, Alexandr Zubov, Petr Mazur
Summary: Vanadium redox flow battery is a promising energy storage solution with long-term durability, non-flammability, and high overall efficiency. Researchers have developed a mathematical model to simulate the charge-discharge cycling of the battery, and found that hydraulic connection of electrolyte tanks is the most effective strategy to reduce capacity losses, achieving a 69% reduction.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
M. Rodriguez-Gomez, J. Campo, A. Orera, F. de La Fuente, J. Valenciano, H. Fricke, D. S. Hussey, Y. Chen, D. Yu, K. An, A. Larrea
Summary: In this study, we analysed the operando performance of industrial lead cells using neutron diffraction experiments. The experiments revealed the evolution of different phases in the positive electrode, showed significant inhomogeneity of phase distribution inside the electrode, and estimated the energy efficiency of the cells.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Jiawei Liu, Chenpeng Wang, Yue Yao, Hao Ye, Yinglong Liu, Yingli Liu, Xiaoru Xu, Zhicong Chen, Huazheng Yang, Gang Wu, Libin Lei, Chao Wang, Bo Liang
Summary: The study focuses on utilizing double conductive Ni-pads as anode collectors in micro-tubular solid oxide fuel cells. The simulation results show excellent performance and stability of DCNPs, and also highlight the potential applications in various fields.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yang Wang, Kangjie Zhou, Lang Cui, Jiabing Mei, Shengnan Li, Le Li, Wei Fan, Longsheng Zhang, Tianxi Liu
Summary: This study presents a polyimide sandwiched separator (s-PIF) for improving the cycling stability of Li-metal batteries. The s-PIF separator exhibits superior mechanical property, electrolyte adsorption/retention and ion conductivity, and enables dendrite-free Li plating/stripping process.
JOURNAL OF POWER SOURCES
(2024)
