Article
Engineering, Electrical & Electronic
Alwani Imanah Rafieh, Piyasiri Ekanayake, Hideki Nakajima, Abdul Hanif Mahadi, Masanizan Abu, Muna Fathiah Don, Chee Ming Lim
Summary: Doping calcium and lanthanum into mesoporous TiO2 prevents particle nucleation and growth during high temperature synthesis and calcination, resulting in smaller particle sizes and a reduced band gap of TiO2. This enhances the efficiency of dye-sensitized solar cells (DSSCs) as anodes and increases dye adsorption concentration. Moreover, the presence of calcium and lanthanum dopants in TiO2 nanoparticles is confirmed, and doping with these elements improves overall device efficiency through increased surface area and oxygen vacancies.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Energy & Fuels
Rajkumar Senthamarai, Venkatraman Madurai Ramakrishnan, Balraju Palanisamy, Suguna Kulandhaivel
Summary: Clean and green energy is a global priority, and in this study, TiO(2) nanostructures were prepared using fruit extracts as reducing agents. The structural and optical properties of the synthesized TiO(2) nanostructures were characterized, and their performance in dye-sensitized solar cells was studied using two different dyes.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Analytical
Jianjun Yang, Xiaobao Yu, Yaxin Li, Guilin Cheng, Zichuan Yi, Zhi Zhang, Feng Chi, Liming Liu
Summary: This paper proposes a new type of flexible dye-sensitized solar cell (DSSC) structure with all-metal electrodes without the use of rare elements. The preparation techniques for the light-receiving layer and porous titanium dioxide (TiO2) film are analyzed. Experimental results show that different electrode material combinations can achieve different performance indicators.
Article
Materials Science, Multidisciplinary
Fengjuan Miao, Fuchen Chu, Bingcheng Sun, Bairui Tao, Peng Zhang, Yu Zang, Paul K. Chu
Summary: This study presents the design and fabrication of a photoanode composed of Au/SnS/TiO2 sensitized with natural dye for dye-sensitized solar cells (DSSCs). By calcination, a layer of spherical nano-TiO2 is prepared, and a layer of nano-SnS is deposited on the TiO2 photoanode using the continuous ion layer adsorption reaction (SILAR). The sensitized Au nanoparticles exhibit enhanced localized surface plasmon resonance (LSPR) effects and electron trapping ability, resulting in improved electron mobility and reduced electron recombination in the DSSC.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Energy & Fuels
Bingyu Lei, Neil Robertson
Summary: A new method for the immobilization of TiO2 mesocrystals has been developed in this study. The immobilized TiO2 possesses high dye pickup capability and optimal electron transport ability, making it suitable for dye-sensitized solar cells.
Article
Electrochemistry
Li-Syuan Chen, Manik Chandra Sil, Yu-Hsin Lee, Heng-Jui Liu, Chih-Ming Chen
Summary: The study introduces a new hybrid scattering layer consisting of micro-sized sericite flakes and TiO2 nanoparticles to enhance the light harvesting performance of dye-sensitized solar cells. Material optimization using different sizes of TiO2 nanoparticles led to improved power conversion efficiency under various lighting conditions. The addition of sericite in the scattering layer provides a new pathway for preparing more efficient light harvesting layers.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Sina Wrede, Lanlan He, Gerrit Boschloo, Leif Hammarstrom, Lars Kloo, Haining Tian
Summary: To gain a deeper understanding of charge processes in dye-sensitized photocathodes, lateral electron hopping across dye-sensitized NiO photocathodes was investigated. The results show the existence of a second electron hopping pathway between NiO surface states, which dominates recombination kinetics. The study highlights the importance of fast electron transport in sensitized NiO photocathodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Mehdi Ismail, Mohamed Mehdi Chebaane, Latifa Bousselmi, Orfan Zahraa, Celine Olivier, Thierry Toupance
Summary: TiO2 electrodes modified with different loadings of WO3 showed increased photocurrent density and decreased interface charge transfer resistance. However, all devices modified by WO3 exhibited lower photovoltaic performance compared to the TiO2 reference cell. The highest conversion efficiency was observed when WO3 was introduced into the TiCl4 pretreatment bath, optimizing semiconductor contact for improved charge transfer.
SURFACES AND INTERFACES
(2021)
Article
Engineering, Electrical & Electronic
Yu-Hsun Nien, Yi-Ting Wu, Jung-Chuan Chou, Chih-Sung Ho, Chih-Hsien Lai, Po-Yu Kuo, Zhen-Rong Yong, Yu-Che Lin, Ruei-Hong Syu
Summary: The effects of PbTiO3 and PbTiO3/TiO2 NFs on the characteristics of the photoanode of DSSC were studied. The results showed that they can improve the photovoltaic characteristics of DSSC, with the DSSC modified by PbTiO3/TiO2 NFs exhibiting better photoelectric conversion efficiency.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Materials Science, Ceramics
Masrianis Ahmad, Huda Abdullah, Nor Yuliana Yuhana, Brian Yuliarto, Mohd Hafiz Dzarfan Othman
Summary: This study investigates the photovoltaic conversion efficiency of TiO2-SiO2-nickel-GO thin films by finding the optimal annealing temperature. It was found that the photoanode annealed at 350 degrees C exhibited better photovoltaic performance with the highest power conversion efficiency of 3.40%.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Yang-Hong Wu, Kai-Yan Yuan, Yan-E He, Heng Wu, Li-Jiao Ma, Gang Wang, Xiao-Dong Qiao, Bing-Xin Lei, Zhen-Fan Sun, Zhao-Qing Liu
Summary: Waxberry-like mixed-phase TiO2 hollow microstructures (WMTHMs) are controllably prepared and exhibit excellent light scattering capacity and high cell efficiency, attributed to the radially aligned nanorods and efficient electron transport.
CHINESE CHEMICAL LETTERS
(2022)
Article
Physics, Applied
Kao-Wei Min, Ming-Ta Yu, Chi-Ting Ho, Pin-Ru Chen, Jenn-Kai Tsai, Tian-Chiuan Wu, Tung-Lung Wu
Summary: In this research, the doctor blade coating method was used to prepare dye-sensitized solar cells (DSSCs) and dope the original titanium dioxide (TiO2, P25) photoanode (PA) with single-layer graphene (G), graphene quantum dots (GQDs), and gold (Au) nanoparticles. Doping with G, GQDs, and Au effectively increased the short-circuit current density (J(sc)), conversion efficiency (eta), and decreased the internal structure impedance (R-k) of DSSCs. The photoanode of the DSSC effectively activated the photogenerated electrons in the film by doping single-layer graphene, and TiO2 captured its electrons through graphene, resulting in improved efficiency of DSSCs.
MODERN PHYSICS LETTERS B
(2022)
Article
Materials Science, Ceramics
Yi Di, Tianshi Qin
Summary: In this study, dispersed Ni species over the surface of plasmonic TiN nanocrystals (TiN@Ni) were manufactured using a wetness impregnation method. The bifunctional TiN@Ni nanocrystals combined with monolayer MXene to form a continuous conductive matrix, serving as a counter electrode for dye-sensitized solar cells (DSSC), resulting in enhanced electrocatalytic performance and power conversion efficiency.
CERAMICS INTERNATIONAL
(2022)
Review
Chemistry, Multidisciplinary
Belen Vaz, Moises Perez-Lorenzo
Summary: Porphyrins have been widely used as photosensitizers in the field of photovoltaics and photocatalysis due to their ability to transfer energy from light-collecting areas to reaction centers, similar to natural photosynthesis. However, while solar cell development has led to continuous improvement in the molecular design of these pigments, these innovations have not been efficiently applied to dye-sensitized photocatalysis. This review aims to explore recent advances in the role of porphyrin structural motifs as sensitizers in TiO2-mediated catalysis, providing valuable insights for the development of more efficient photocatalysts.
Article
Chemistry, Physical
Wei Zheng, Xu Zhang
Summary: The introduction of CdS/Ag2S quantum dots can effectively enhance the power conversion efficiency of the hybrid solar cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)