Article
Chemistry, Physical
Sunil Kumar, Pravesh Kumar Yadav, Ravi Prakash, Amita Santra, Pralay Maiti
Summary: A new electrolyte with electrolyte active groups (EAG) embedded in structured hard segments was developed using graphene oxide and polyurethane chain. The optimized PUI-GO electrolyte exhibited higher electrical conductivity (4.48 x 10(-3) S/cm) and improved photovoltaic reaction, leading to enhanced power conversion efficiency and open circuit potential in quantum dot-sensitized solar cells (QDSSC).
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Electrochemistry
Di Zhang, Sidong Zhang, Yanyan Fang, Dongmei Xie, Xiaowen Zhou, Yuan Lin
Summary: Introducing bifunctional linkers between TiO2 electrodes and quantum dots was an effective approach for the preparation of quantum dot-sensitized solar cells. Three types of linkers were studied, with phenyl MBA-TiO2 electrodes achieving the highest Cd content and PCE. The modified TiO2 electrodes showed lower electron recombination rates and higher efficiency, demonstrating the importance of linker selection for QDSCs design and optimization.
ELECTROCHIMICA ACTA
(2021)
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
Physics, Applied
Shuning Wang, Maojun Zheng, Dongkai Jiang, Hao Yuan, Hao Chen, Yunlong Fan, Fanggang Li, Wenlan Zhang, Li Ma, Wenzhong Shen
Summary: Zinc oxide (ZnO) is a promising UV detector material with advantages of wide bandgap, rich resources, simple preparation, and environmental friendliness. However, its complicated preparation processes and complex device structures have limited its application. In this study, a high-performance UV detector based on graphene quantum dot-sensitized GaP@ZnO nanocomposite was successfully fabricated using a simple spin-coating method. This research provides a new method for preparing high-performance optoelectronic devices using material composites and surface modification.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
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
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
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.
Review
Biochemistry & Molecular Biology
Nguyen Thi Kim Chung, Phat Tan Nguyen, Ha Thanh Tung, Dang Huu Phuc
Summary: This study provides an overview of quantum dot application in solar cells, replacing dye molecules. The different types of quantum dot sensitized solar cells are presented with obtained results and their respective advantages and disadvantages. Lastly, methods for improving efficiency performance in future research are proposed.
Article
Materials Science, Multidisciplinary
Mian-En Yeoh, Kah-Yoong Chan, Hin-Yong Wong, Pei-Ling Low, Zi-Neng Ng, H. C. Ananda Murthy, Ruthramurthy Balachandran
Summary: Globally, the hydrothermal method is commonly used to synthesize TiO2 photoanodes for various applications, but it is often complex and difficult to follow. This study successfully developed a reinvented hydrothermal synthesis methodology, which demonstrated a mixed-phase TiO2 photoanodes without several intermediate hydrothermal steps. The DSSC devices fabricated using this methodology showed comparable and excellent power conversion efficiency (η=3.30%) to commercial TiO2-based DSSCs (η=3.81%). This preliminary study provides new perspectives on simplifying wet chemical synthesis techniques for TiO2 in the design of DSSCs.
Article
Chemistry, Multidisciplinary
Xuwen Gao, Guocan Jiang, Cunyuan Gao, Anatol Prudnikau, Rene Huebner, Jinhua Zhan, Guizheng Zou, Alexander Eychmueller, Bin Cai
Summary: This study presents the design of quantum dot (QD) aerogels as novel Electrochemiluminescence (ECL) luminophores, enabling highly efficient fluorescence emission. The mechanism of ECL generation is verified through the experiment of mixed QD aerogels. This work contributes to the fundamental understanding of ECL and provides useful insights for designing next-generation QD-based devices.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Dongliang Xing, Wenjing Pan, Zhongqi Xie, Qing-Song Jiang, Yue Wu, Wei Xun, Yi Lin, Xiao Yang, Yulin Zhang, Bencai Lin
Summary: A potassium-doped SnO2 film was fabricated on fluorine-doped tin oxide (FTO) glass using spin-coating technique. The introduction of potassium improved the electrical properties of the SnO2 film, facilitating electron transfer from TiO2 film to FTO glass. Additionally, the K-doped SnO2 compact layer effectively suppressed recombination effects between FTO glass and the electrolyte, resulting in an enhanced short-circuit current density and higher power conversion efficiency for dye-sensitized solar cells (DSSCs) compared to TiO2 and non-doped SnO2/TiO2 films.
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
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, Multidisciplinary
Sabir Ali Siddique, Muhammad Arshad, Sabiha Naveed, Muhammad Yasir Mehboob, Muhammad Adnan, Riaz Hussain, Babar Ali, Muhammad Bilal Ahmed Siddique, Xin Liu
Summary: The study designed five zinc phthalocyanine-based donor materials and used DFT to investigate their optoelectronic properties for dye-sensitized solar cells, showing that T1 may exhibit superior performance in this application.
Review
Chemistry, Physical
Layla Haythoor Kharboot, Nor Akmal Fadil, Tuty Asma Abu Bakar, Abdillah Sani Mohd Najib, Norhuda Hidayah Nordin, Habibah Ghazali
Summary: Third-generation solar cells, such as dye-sensitized solar cells and quantum dot-sensitized solar cells, require counter electrodes (CEs) for their functionality. Platinum-based CEs are dominant but expensive, thus alternative materials like transition metal chalcogenides (TMCs) and transition metal dichalcogenides (TMDs) have been explored. This study provides a comprehensive review of the major components and working principles of these solar cells, and evaluates the performance efficiencies resulting from TMS-based CEs compared to Pt-based CEs.
Article
Chemistry, Physical
M. Isacfranklin, B. Jansi Rani, P. Senthil Kumar, R. Yuvakkumar, G. Ravi, A. Manigandan, M. Thambidurai, Cuong Dang, Dhayalan Velauthapillai
Summary: This study focuses on the preparation of electrodes for energy storage and water-splitting using the co-precipitation technique. Cyclic voltammetry and galvanostatic charge-discharge were used to evaluate the performance of the electrodes. The results showed that higher concentration of ammonia contributed to better diffusion and specific capacitance. The study also explored the application of linear sweep voltammetry and chronoamperometry in water-splitting.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
S. Swathi, R. Yuvakkumar, P. Senthil Kumar, G. Ravi, M. Thambidurai, Cuong Dang, Dhayalan Velauthapillai, Dai-Viet N. Vo
Summary: In this study, Ni and Co co-doped MnCO3 nanostructures were successfully synthesized by a co-precipitation technique. The analysis confirmed the presence of Ni and Co elements, and the doped nanostructures exhibited enhanced catalytic performance and activity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
M. Thambidurai, Mohamed Omer, Foo Shini, Herlina Arianita Dewi, Nur Fadilah Jamaludin, Teck Ming Koh, Xiaohong Tang, Nripan Mathews, Cuong Dang
Summary: This study presents a facile yet excellent approach to enhance the thermal stability and power conversion efficiency (PCE) of perovskite solar cells (PSCs) by introducing triphenylphosphine (TPP) as a passivator. The TPP-passivated devices exhibited superior ambient and thermal stability, with a retention of 71% of its initial PCE after long-term storage at high temperature and humidity.
Review
Energy & Fuels
Shini Foo, Mariyappan Thambidurai, Ponnusamy Senthil Kumar, Rathinam Yuvakkumar, Yizhong Huang, Cuong Dang
Summary: This article discusses the advancements and roles of electron transport layers (ETLs) in perovskite solar cells, as well as explores the effects of ETLs on charge transport, hysteresis, and stability.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
S. Swathi, R. Yuvakkumar, P. Senthil Kumar, G. Ravi, M. Thambidurai, Cuong Dang, Dhayalan Velauthapillai
Summary: Hydrogen is emerging as a preferred energy source and next generation fuel. In this study, cost-effective and efficient calcium molybdate nanostructures were prepared as electrocatalysts for hydrogen evolution reaction. The nanostructures exhibited superior activity due to their elevated electronic conductivity, mesoporous nature, high surface area, and unique morphology.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Electrical & Electronic
M. Sangeetha, T. S. Senthil, N. Senthilkumar, Misook Kang
Summary: A simple precipitation process was used to synthesize Bismuth and Boron co-doped TiO2 nanorods. The materials exhibited a highly crystalline anatase structure with varying particle sizes. Optical studies showed different band gap energies for the synthesized nanomaterials. The photocatalytic activity of Bi-B co-doped materials was found to be enhanced compared to pure TiO2 and singly-doped materials.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Energy & Fuels
V. Thirumal, R. Yuvakkumar, P. Senthil Kumar, Gayathri Rangasamy, G. Ravi, M. Isacfranklin, Dhayalan Velauthapillai, M. Thambidurai, Hung D. Nguyen
Summary: In this study, carbon nanotube (CNT) electrodes with excellent electrochemical performance were prepared using chemical vapor deposition method. The results showed that CNTs synthesized on Ni-foam substrate exhibited lower overpotential and resistance, and demonstrated efficient catalytic activity for hydrogen evolution reaction. This method offers a cost-effective and reliable approach for electrochemical water splitting.
Article
Chemistry, Physical
S. Swathi, R. Yuvakkumar, G. Ravi, M. Shanthini, Abdullah G. Al-Sehemi, M. Thambidurai, Hung D. Nguyen, Dhayalan Velauthapillai
Summary: In this study, a low-cost electrocatalyst for the hydrogen evolution reaction (HER) in water-splitting was successfully prepared through a simple chemical reaction. The catalyst exhibited excellent performance and high stability, providing a potential solution for electrochemical hydrogen generation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
P. Mohana, R. Yuvakkumar, G. Ravi, M. Thambidurai, Hung D. Nguyen
Summary: Copper doped zinc sulfide (Cu-ZnS) electrocatalysts were studied for water oxidation in 1 M potassium hydroxide (KOH) and 1 M sodium sulphate (Na2SO4) electrolyte. The Cu-ZnS exhibited low overpotential and Tafel slope in both KOH and Na2SO4, indicating its good electrocatalytic activity.
Article
Electrochemistry
Isacfranklin Melkiyur, Yuvakkumar Rathinam, Ravi Ganesan, M. Thambidurai, Hung D. Nguyen, Dhayalan Velauthapillai
Summary: Unique hierarchical mesoporous with hollow nanostructures of rare earth transition metal oxides (RE-TMOs) have gained significant research attention as electrode materials for supercapacitors due to their surface permeability, large surface area, and low density. However, controlling the hollow nanostructures in a simple method is a challenging task.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
M. Thambidurai, Herlina Arianita Dewi, Anil Kanwat, Srilakshmi Subramanian Periyal, Nur Fadilah Jamaludin, Annalisa Bruno, Nripan Mathews, Cuong Dang, Hung D. Nguyen
Summary: A novel ionic liquid (IL) additive, 1-ethyl-3-methylimidazolium chloride (EMIC), has been found to improve the stability of perovskite solar cells (PSCs) by enhancing crystallinity, surface topography, carrier lifetimes, defect density reduction, and interfacial band energy alignment. The EMIC-based PSC achieves a PCE of 20.15% and retains 89% of its initial PCE after 1440 hours of ambient storage (30% RH, 25 degrees C), and retains 65% of its initial PCE after 600 hours of thermal aging (85 degrees C, 10% RH).
JOURNAL OF POWER SOURCES
(2023)
Article
Nanoscience & Nanotechnology
Srinivasan Swathi, Rathinam Yuvakkumar, Ganesan Ravi, Mariyappan Thambidurai, Hung D. Nguyen, Dhayalan Velauthapillai
Summary: Highly efficient ternary copper iron sulfide (CuFeS2)/reduced graphene oxide (rGO) composites are synthesized via a hydrothermal approach for overall water splitting process, demonstrating improved electrocatalytic activity.
ACS APPLIED NANO MATERIALS
(2023)
Article
Electrochemistry
M. Isacfranklin, R. Yuvakkumar, G. Ravi, M. Thambidurai, Hung D. Nguyen, Dhayalan Velauthapillai
Summary: In this study, metal oxide-based anode materials were successfully synthesized via a one-step solvothermal method and applied in hybrid supercapacitors, demonstrating excellent capacitance performance and cycling stability, which presents potential practical applications value.
ELECTROCHIMICA ACTA
(2023)
Article
Energy & Fuels
M. Isacfranklin, R. Yuvakkumar, G. Ravi, M. Thambidurai, Hung D. Nguyen, Dhayalan Velauthapillai
Summary: The modern world is focusing on science and technology as alternative sources of energy to tackle the energy crisis and promote economic development. New approaches and novel electrode materials are being explored to overcome the challenges of high energy density, power density, and long-term stability in supercapacitors. By studying the role of carbon composites with rare earth nickelate, such as single-walled and multi-walled carbon nanotubes, potential electrode materials with excellent electrochemical properties for supercapacitors have been developed. A hybrid supercapacitor using these materials exhibited high capacitance retention, coulombic efficiency, and stability, making the hybrid microflower rare earth nickelate a promising candidate for next-generation electrodes in hybrid supercapacitors.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Materials Science, Multidisciplinary
Foo Shini, M. Thambidurai, Herlina Arianita Dewi, Nur Fadilah Jamaludin, Annalisa Bruno, Anil Kanwat, Nripan Mathews, Cuong Dang, Hung D. Nguyen
Summary: The interfacial passivation technique is an effective method for enhancing stability and photovoltaic performance of perovskite solar cells. This study highlights the importance of passivating undercoordinated halide ions in minimizing carrier losses at the perovskite/spiro-OMeTAD interface, leading to improved power conversion efficiency. CBSC serves as a Lewis acid passivation material, effectively binding to undercoordinated halide ions and Pb-I antisite defects, resulting in a champion CBSC-passivated perovskite device with high efficiency and long-term stability.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Energy & Fuels
Siddharth Sradhasagar, Omkar Subhasish Khuntia, Srikanta Biswal, Sougat Purohit, Amritendu Roy
Summary: In this study, machine learning models were developed to predict the bandgap and its character of double perovskite materials, with LGBMRegressor and XGBClassifier models identified as the best predictors. These models were further employed to predict the bandgap of novel bismuth-based transition metal oxide double perovskites, showing high accuracy, especially in the range of 1.2-1.8 eV.
Article
Energy & Fuels
Wei Shuai, Haoran Xu, Baoyang Luo, Yihui Huang, Dong Chen, Peiwang Zhu, Gang Xiao
Summary: In this study, a hybrid model based on numerical simulation and deep learning is proposed for the optimization and operation of solar receivers. By applying the model to different application scenarios and considering multiple performance objectives, small errors are achieved and optimal structure parameters and heliostat scales are identified. This approach is not only applicable to gas turbines but also heating systems.
Article
Energy & Fuels
Mubashar Ali, Zunaira Bibi, M. W. Younis, Muhammad Mubashir, Muqaddas Iqbal, Muhammad Usman Ali, Muhammad Asif Iqbal
Summary: This study investigates the structural, mechanical, and optoelectronic properties of the BaCuF3 fluoroperovskite using the first-principles modelling approach. The stability and characteristics of different cubic structures of BaCuF3 are evaluated, and the alpha-BaCuF3 and beta-BaCuF3 compounds are found to be mechanically stable with favorable optical properties for solar cells and high-frequency UV applications.
Article
Energy & Fuels
Dong Le Khac, Shahariar Chowdhury, Asmaa Soheil Najm, Montri Luengchavanon, Araa mebdir Holi, Mohammad Shah Jamal, Chin Hua Chia, Kuaanan Techato, Vidhya Selvanathan
Summary: A novel recycling system is proposed in this study to decompose and reclaim the constituent materials of organic-inorganic perovskite solar cells (PSCs). By utilizing a one-step solution process extraction approach, the chemical composition of each layer is successfully preserved, enabling their potential reuse. The proposed recycling technique helps mitigate pollution risks, minimize waste generation, and reduce recycling costs.
Article
Energy & Fuels
Peijie Lin, Feng Guo, Xiaoyang Lu, Qianying Zheng, Shuying Cheng, Yaohai Lin, Zhicong Chen, Lijun Wu, Zhuang Qian
Summary: This paper proposes an open-set fault diagnosis model for PV arrays based on 1D VoVNet-SVDD. The model accurately diagnoses various types of faults and is capable of identifying unknown fault types.
