Article
Materials Science, Multidisciplinary
Divya Krishnan, Niket Suresh Powar, Arya Vasanth, Kulandai Velu Ramanathan, Shantikumar Nair, Mariyappan Shanmugam
Summary: The study found that adding 6 wt% graphene oxide (GO) into iodide-triiodide (I-/I-3(-)) electrolyte can significantly improve the performance of dye sensitized solar cells (DSSCs), but performance is suppressed when the GO content exceeds 6 wt%. This is because an appropriate amount of GO can enhance hole transport, while an excessive amount of GO will reduce diffusivity.
Review
Chemistry, Applied
J. H. Markna, Prashant K. Rathod
Summary: This review article provides a comprehensive overview of the efficiency of quantum dot sensitized solar cells (QDSCs) based on dye-synthesized solar cells and nanotechnology, and discusses their status under the influence of photoanode and quantum dot sensitizers.
Article
Polymer Science
Ravi Prakash, Santanu Das, Pralay Maiti
Summary: Functionalization of multi-walled carbon nanotubes (CNTs) was conducted to obtain CNT-tagged polyurethane (PU-CNT) through ultrasonication, chemical attachment, and chain extension. Spectroscopic techniques confirmed the functionalization of CNTs and polymer and thermal measurements revealed improved thermal stability and conductivity. Quantum dots of CuInS2 were synthesized and characterized for potential use in solar cells. Solar cell devices with Au as counter electrode achieved an enhanced power conversion efficiency of 0.81% due to reduced electron-hole pair recombination and improved hole transportation.
Article
Chemistry, Physical
S. Liu, R. Fan, Y. Zhao, M. Yu, L. Li, Q. Li, B. Liang, W. Zhang
Summary: In this study, a relatively less toxic CISSe quantum dot was prepared by an organic high-temperature hot injection method for use in QD-sensitized solar cells. Through Sn doping and ZnS passivation, the electron collection efficiency was improved and charge recombination was inhibited, resulting in a power conversion efficiency of 6.7% for the QDSSC.
MATERIALS TODAY ENERGY
(2021)
Article
Energy & Fuels
Ahmed Mortuza Saleque, Shuvra Saha, Md Nahian Al Subri Ivan, Safayet Ahmed, Tawsif Ibne Alam, Sumaiya Umme Hani, Yuen Hong Tsang
Summary: Desalination based on solar-driven interfacial steam generation is an efficient and cost-effective solution to the freshwater crisis. However, an alternative approach is needed to address both the freshwater crisis and environmental pollution. The widespread use of surgical face masks during the COVID-19 pandemic has raised concerns about mask disposal. In this study, a solar evaporator was fabricated using TiTe2 quantum dots decorated reduced graphene oxide on a hydrophilic substrate derived from waste face masks, achieving a high evaporation rate and efficiency for seawater desalination.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Chemistry, Multidisciplinary
Akash S. Rasal, Khalilalrahman Dehvari, Girum Getachew, Chiranjeevi Korupalli, Anil Ghule, Jia-Yaw Chang
Summary: Modifying conservative polysulfide electrolytes with polymer additives such as sulfur-rich graphitic carbon nitride (SGCN) can enhance the photovoltaic performance of quantum dot sensitized solar cells (QDSSCs), particularly improving short-circuit current and fill factors. The efficiency of QDSSCs is increased by the additives, possibly due to the electron-rich surface of SGCN hindering electron-hole recombination and facilitating the reduction of S-n(2-) to S2- redox couple more efficiently.
Review
Chemistry, Physical
Akash S. Rasal, Sudesh Yadav, Anil A. Kashale, Ali Altaee, Jia-Yaw Chang
Summary: This review discusses the factors influencing the performance stability of QDSSCs and provides insights into the mechanisms causing degraded performances. It also presents cutting-edge strategies for improving the overall performance stability of QDSSCs.
Article
Materials Science, Multidisciplinary
Jagriti Tyagi, Himanshu Gupta, L. P. Purohit
Summary: Different photoanodes were prepared on fluorine-doped tin oxide conductive glass substrate using the doctor blade method, with CdS quantum dots deposited by SILAR. The ZnO/TiO2 photoanode achieved higher efficiency compared to bare TiO2 in the QDSSC, with improved electron transport and overall performance. The IPCE for ZnO/TiO2 electrode was approximately 46%, showing enhanced capabilities for photon-to-current conversion.
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
Energy & Fuels
Tamal Dey, Arup Ghorai, Soumen Das, Samit K. Ray
Summary: The choice of solvent used in the synthesis of nitrogen-doped graphene quantum dots (N-GQDs) significantly affects the photovoltaic performance of quantum dot sensitized solar cells (QDSSC). Switching to aprotic solvent DMF enhances nitrogen units in the graphene quantum dots framework, improving carrier density and transport properties, and resulting in better photovoltaic performance for QDSSC.
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
Energy & Fuels
Roopakala Kottayi, Vignesh Murugadoss, Pratheep Panneerselvam, Ramadasse Sittaramane, Subramania Angaiah
Summary: Cu2AgInS2Se2 alloyed quantum dots were synthesized using a hot injection method, with their structure, optical properties, and composition confirmed through various analyses. The sensitized solar cell using these quantum dots exhibited higher photoconversion efficiency compared to other quantum dots, showcasing their potential for photovoltaic applications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Meitong Chu, Zhonglin Du, Yanying Zhang, Lin Li, Shujie Jiao, Fahad Azad, Shichen Su
Summary: In this study, a graphene/Cu2-xSe composite material was prepared and studied for its photovoltaic and electrochemical properties. By optimizing the ratio of GR:Cu2-xSe and sintering temperature, the QDSCs based on the optimized GR/Cu2-xSe composite CE showed a significant improvement in cell performance compared to other types of CEs, with a PCE of 6.66%. The enhanced performance of the composite CE was attributed to the combination of high catalytic activity of Cu2-xSe nanoparticles and good conductivity of graphene, suggesting that GR/Cu2-xSe composite CE could be a potential candidate for high efficiency QDSCs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Irfan Mahmood Khan, Rabia Nazar, Umer Mehmood
Summary: This study aimed to fabricate Platinum-free counter electrode materials for energy conversion devices using PPY and PPY/graphene composites. The DSSCs with PPY/4% graphene CE showed the highest efficiency (3.06%).
Article
Chemistry, Physical
Guojiao Zhao, Yefeng Wang, Jing-Hui Zeng, Zhaofu Fei, Paul J. Dyson
Summary: In this study, a series of cost-effective solid-state electrolytes containing improved conductivity and device performance were synthesized and applied in quantum dot-sensitized solar cells. The highest power conversion efficiency achieved was 5.69% under AM 1.5 (100 mW.cm(-2)) irradiation, showing promising potential for application in photoelectrochemical cells.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.