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
Optics
Roopakala Kottayi, V Ilangovan, Ramadasse Sittaramane
Summary: Cu2AgInS4 QDs/Zn-TiO2 NPs photoanode shows improved photoconversion efficiency (5.43%) by 36% compared to Cu2AgInS4 QDs/TiO2 NPs photoanode (3.92%) in QDSC, due to higher light absorbance, enhanced electron transfer ability, lower charge transfer resistance and enhanced photocatalytic behavior.
Article
Chemistry, Physical
Yi Jiang, Qing Wang, Xinchao Wen, Yongbo Yu, Jianfeng Dai
Summary: This study introduced rGO into QDSSC photoanodes to enhance performance by optimizing the built-in electric field in the electrode, leading to a significant improvement in power conversion efficiency.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Electrochemistry
Yuyu Liu, Zi Wang, Linjie Li, Shufang Gao, Dingshan Zheng, Xiangxiang Yu, Qingfeng Wu, Qin Yang, Desheng Zhu, Wenxing Yang, Yan Xiong
Summary: This paper presents the fabrication of a novel photoanode based on a semiconductor composite and tests its performance in QDSSCs. The experimental results show that the new photoanode exhibits better charge transfer and reaction rates, as well as higher photocurrents and power conversion efficiencies. After interface modification, the cell efficiency is further improved.
ELECTROCHIMICA ACTA
(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
Danwen Yao, Zhenyu Hu, Liansheng Zheng, Shanming Chen, Wei Lu, Huailiang Xu
Summary: The research focuses on the fabrication of CdS/CdSe-sensitized quantum dot sensitized solar cells (QDSSCs) using laser-engineered black rutile TiO2 nanoparticles (TiO2-NPs) as the photoanode material. The results show that the devices based on black TiO2-NPs have significantly higher power conversion efficiency (PCE) compared to those using pristine TiO2-NPs. Analysis of absorption and electrochemical impedance spectroscopy indicates that the device with the highest PCE has the highest absorption efficiency in a wide spectral range and the smallest series resistance, which can be attributed to the surface modification of TiO2-NPs by femtosecond laser pulses.
APPLIED SURFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Yi Jiang, Yile Dai, Xianfei Xie, Qing Wang, Jianfeng Dai
Summary: In this study, a novel strategy for improving QDSSCs is proposed by preparing transparent anatase TiO2 films with improved optical transmittance. This approach enhances the utilization efficiency of QDs by increasing the number of captured photons. The transparent bulk TiO2 film also optimizes the transmission path of charge carriers and reduces carrier capture composite rate. The results show improved performance parameters and higher transparency, making it suitable for practical application and aesthetics.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Maryam Ostadebrahim, Hossein Dehghani
Summary: In this study, the influence of ZnS, ZnSe, and ZnSxSe1-x layers in CdSexS1-x quantum dot based solar cells was systematically investigated, with ZnS and ZnS0.2Se0.8 identified as the optimal choices. The designed QDSSCs with these layers showed a significantly higher efficiency compared to bare QDSSCs.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Dongyang Wang, Wenhua Zou, Yexin Chen, Junhong Duan
Summary: In this study, Eu-doped TiO2 nanoparticles with different doping percentages were synthesized by sol-gel method. It was found that doping Eu element can modify the band structure of TiO2 and improve the efficiency of the solar cells.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Physical
Ikhtiar Ahmad, Rashida Jafer, Syed Mustansar Abbas, Nisar Ahmad, Ata-ur-Rehman, Javed Iqbal, Shahid Bashir, Ammar A. Melaibari, Muhammad Haleem Khan
Summary: In this study, cobalt-reduced graphene oxide co-doped TiO2 nanoparticles were synthesized to enhance the efficiency of dye-sensitized solar cells (DSSCs). The newly synthesized material showed improved photovoltaic properties, with higher short circuit current density and overall power conversion efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Bin Bin Jin, Hui Sheng Huang, Shu Ying Kong, Guo Qing Zhang, Biao Yang, Chu Xing Jiang, Ya Zhou, Dan Jun Wang, Jing Hui Zeng
Summary: In this study, ATO/PbSe composite was designed as the counter electrode for QDSSCs, showing enhanced electrocatalytic activity and stability compared to PbSe CE obtained by PVD. The improved performance is attributed to the high specific surface area, permeability, conductivity, and interface connectivity of ATO/PbSe CE, providing more active sites for reduction and fast channels for ion diffusion and electron transport. As a result, the CdS QDSSCs and CdS/CdSe co-sensitized QDSSCs assembled with ATO/PbSe CE exhibited higher power conversion efficiency than PbSe CE obtained by PVD, with stable photovoltaic properties over 200 minutes.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
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, 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, Multidisciplinary
Bingjun Jin, Yoonjun Cho, Cheolwoo Park, Jeehun Jeong, Sungsoon Kim, Jie Jin, Wooyul Kim, Luyang Wang, Siyu Lu, Shengli Zhang, Sang Ho Oh, Kan Zhang, Jong Hyeok Park
Summary: The study demonstrates a strategically designed E-BiVO4/BPQDs/OL-OEC photoanode, which effectively improves the efficiency of photoelectrochemical water splitting by achieving a high photocurrent density under AM 1.5 illumination, combining multiple functional components for efficient solar-to-fuel conversion devices.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
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.
Article
Engineering, Environmental
Zacharias Frontistis, Maria Antonopoulou, Athanasia Petala, Danae Venieri, Ioannis Konstantinou, Dimitris I. Kondarides, Dionissios Mantzavinos
JOURNAL OF HAZARDOUS MATERIALS
(2017)
Article
Chemistry, Physical
Eleni Grilla, Athanasia Petala, Zacharias Frontistis, Ioannis K. Konstantinou, Dimitris Kondarides, Dionissios Mantzavinos
APPLIED CATALYSIS B-ENVIRONMENTAL
(2018)
Article
Electrochemistry
Georgios Bampos, Dimitris I. Kondarides, Symeon Bebelis
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2018)
Article
Engineering, Environmental
Athanasia Petala, Antigoni Noe, Zacharias Frontistis, Charalampos Drivas, Stella Kennou, Dionissios Mantzavinos, Dimitris I. Kondarides
JOURNAL OF HAZARDOUS MATERIALS
(2019)
Article
Chemistry, Applied
Athanasia Petala, Dimitra Spyrou, Zacharias Frontistis, Dionissios Mantzavinos, Dimitris I. Kondarides
Article
Chemistry, Applied
Athanasia Petala, Dimitris Kondarides
Article
Chemistry, Physical
Charalampia Alexopoulou, Athanasia Petala, Zacharias Frontistis, Charalampos Drivas, Stella Kennou, Dimitris I. Kondarides, Dionissios Mantzavinos
APPLIED CATALYSIS B-ENVIRONMENTAL
(2019)
Article
Chemistry, Physical
Ioannis V. Yentekakis, Grammatiki Goula, Maria Hatzisymeon, Ioanna Betsi-Argyropoulou, Georgia Botzolaki, Kalliopi Kousi, Dimitris I. Kondarides, Martin J. Taylor, Christopher M. A. Parlett, Amin Osatiashtiani, Georgios Kyriakou, Juan Pedro Holgado, Richard M. Lambert
APPLIED CATALYSIS B-ENVIRONMENTAL
(2019)
Editorial Material
Chemistry, Applied
Dimitris I. Kondarides, Theophilos Ioannides, Dionissios Mantzavinos
Article
Chemistry, Physical
Marios Kourtelesis, Kalliopi Kousi, Dimitris Kondarides
Article
Chemistry, Multidisciplinary
Theodora Ramantani, Georgios Bampos, Andreas Vavatsikos, Georgios Vatskalis, Dimitris I. Kondarides
Summary: The study investigated propane steam reforming over perovskite catalysts derived from LaNiO3, La0.8Sr0.2NiO3, and noble metal-substituted perovskites. The incorporation of foreign cations in the structure led to an increase in specific surface area and improved catalytic performance, with the in situ development of new phases actively participating in the reaction. Among the catalysts tested, LSNRh0.1 exhibited the best performance with high stability, propane conversion, and hydrogen selectivity.
Article
Chemistry, Physical
Alberto Gasparotto, Chiara Maccato, Athanasia Petala, Symeon Bebelis, Cinzia Sada, Dimitris Kondarides, Davide Barreca
ACS APPLIED ENERGY MATERIALS
(2019)
Article
Green & Sustainable Science & Technology
Alberto Gasparotto, Chiara Maccato, Cinzia Sada, Giorgio Carraro, Dimitris I. Kondarides, Symeon Bebelis, Athanasia Petala, Andrea La Porta, Thomas Altantzis, Davide Barreca
ADVANCED SUSTAINABLE SYSTEMS
(2019)
Article
Chemistry, Applied
Mir Edris Taheri, Athanasia Petala, Zacharias Frontistis, Dionissios Mantzavinos, Dimitris I. Kondarides
Article
Chemistry, Applied
Athanasia Petala, Remi Bontemps, Antoine Spartatouille, Zacharias Frontistis, Maria Antonopoulou, Ioannis Konstantinou, Dimitris I. Kondarides, Dionissios Mantzavinos