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
Chemistry, Physical
Seul-Yi Lee, Ji-Young Oh, Ruturaj P. Patil, Myoung Kim, Jum Suk Jang, Ho Jin, Sungjee Kim, Hyo Joong Lee
Summary: This study systematically investigates various parameters in the deposition process of CdS-sensitized mesoporous TiO2 electrode, and provides general guidelines for improving the efficiency of photovoltaic and photocatalytic applications by controlling the adsorption of CdS.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Pooja A. Mithari, Avinash C. Mendhe, Suraj R. Sankapal, Sujata R. Patrikar, Babasaheb R. Sankapal
Summary: Bi2Se3 nanoparticles were anchored on multiwalled carbon nanotubes using the SILAR method to create a nanohybrid composite electrode for dye-sensitized solar cell applications. The well-optimized composite showed superior performance compared to bare MWCNTs and Bi2Se3, thanks to the synergistic electrochemical active sites between Bi2Se3 and MWCNTs. The composite electrode also exhibited enhanced stability and efficient charge transfer in the DSSC.
INORGANIC CHEMISTRY COMMUNICATIONS
(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, Analytical
Jidong Wang, Zhihong Gao, Min Dong, Jian Li, Hong Jiang, Jingying Xu, Jianmin Gu, Desong Wang
Summary: A sandwich PEC cytosensor based on CdSe@CdS QD-sensitized Au NP/a-Fe2O3 was developed for ultrasensitive detection of CTCs. The sensor showed high sensitivity and selectivity, and could accurately detect CTCs in serum samples.
Article
Energy & Fuels
Bin Bin Jin, Xiao Jun Liu, Li Chun Dong, Xiang Xin Zhong, Ming Yan Liang, Jie Gan, Min Chen, Feng Guo
Summary: Researchers have developed a simple and rapid voltage-assisted SILAR technique (VASILAR) to more efficiently load CdS/CdSe QDs into TiO2 mesoporous films. The electric field generated by imposing the voltage promotes the preferential deposition of CdS in the deep region of the films, achieving a uniform distribution. Sufficient space and channels are created for the loading of CdSe, and the growth and distribution of CdSe are well regulated with the help of electric field forces. The resulting CdS/CdSe co-sensitized QDSSCs exhibit an outstanding efficiency of 5.7% and remarkable stability.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Engineering, Electrical & Electronic
Chandan Hunsur Ravikumar, Shwetharani Ramu, Sakar Mohan, R. Geetha Balakrishna
Summary: Layered transition metal dichalcogenides, such as MoSe2, exhibit tunable and promising photoelectrochemical properties, making them suitable for various applications. The conversion of MoSe2 into 2D nanosheets enhances its electrocatalysis properties and widens its utilization in optoelectronics. In this study, flowers-like nanostructured MoSe2 was developed and used as the counter electrode in quantum dot-sensitized solar cells, resulting in higher power conversion efficiency compared to a conventional counter electrode.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Energy & Fuels
S. Akhil, J. Kusuma, S. Akash, R. Geetha Balakrishna
Summary: This study explores the use of Lanthanum Strontium Manganite as an electrolyte in Quantum dot sensitized solar cells, which shows potential in improving device performance and stability by reducing back transfer of electrons. There is a possibility of completely replacing liquid electrolytes with ceramics in the future.
Article
Engineering, Electrical & Electronic
Mahboubeh Sotodeian, Maziar Marandi
Summary: The efficiency of quantum dot-sensitized solar cells can be enhanced by utilizing various multilayer photoanode structures, such as TiO2/PbS(X)/CdS/CdSe/ZnS/SiO2. The introduction of PbS quantum dots layer and optimization of CdSe quantum dots film significantly improve the performance of the cells.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Ceramics
S. Monika, M. Mahalakshmi, M. Senthil Pandian
Summary: The effects of co-sensitization and ZnS passivation on the performance of CdS quantum dot sensitized solar cells (QDSSCs) were studied. Co-sensitization of CdS and CdSe improved charge carrier generation and facilitated electron transfer. ZnS passivation suppressed charge recombination and enhanced electron injection. These strategies increased the power conversion efficiency (PCE) of CdS QDSSCs from 1.9% to 4.05%.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Lan Zhou, Hong Ling Ren, Chun Qin Yang, Ya Xue Wu, Bin Bin Jin
Summary: By using the SILAR method, ATO porous matrix film-supported CuS composites were constructed on a fluorine-doped tin oxide glass substrate, showing excellent electrocatalytic activity. Through optimizing the deposition cycles, a stable efficiency was achieved while improving the conductivity.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Energy & Fuels
Wenlei Lv, Yilong Lei, Jianping Deng, Junfei Fang, Wendeng Huang
Summary: Metal ion doping is an effective method to improve the optical and electrical properties of quantum dots (QDs). In this study, Zn-doped CdS and CdSe QDs were synthesized using the SILAR method and utilized in the construction of sensitized solar cells (QDSSCs). The results showed that Zn doping significantly enhanced the power conversion efficiency (PCE) of the QDSSCs by improving the current density, open-circuit voltage, and light absorbance. The Zn doping also reduced the interfacial charge recombination rate and prolonged the electron lifetime, resulting in more efficient charge collection in the QDSSCs.
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
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)
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.