Article
Chemistry, Multidisciplinary
Frances A. Houle
Summary: This study investigates recombination loss in dye-sensitized photoelectrochemical solar energy conversion systems using a computational model, finding that while electrolyte-electron reactions are efficient, they do not significantly impact photoanode performance. The chemistry of the solution-phase electrolyte plays a key role in reducing electron losses by cycling electrolyte species to produce I- within the photoanode pores. This functional adaptive response of chemistry may partly explain the success of the redox couple in dye-sensitized solar cells.
Article
Chemistry, Physical
Naoya Tajima, Katsuichi Kanemoto
Summary: We have conducted time-resolved photo-induced absorption spectroscopy to study the behavior of carriers in operating dye-sensitized solar cells (DSSCs). We discovered that the transfer of electron carriers in DSSCs is very slow and occurs in a specific order. These findings can be observed through PIA signals and photocurrents, which reach equilibrium at the same rate determined by the transfer rate of iodine ions. These operando measurements provide valuable insights into the operational mechanism of solar cells and can be applied to various types of solar cells.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Biochemistry & Molecular Biology
Valentin Maffeis, Bruno Jousselme, Thomas Gustavsson
Summary: This study investigates the excited state relaxation dynamics of the photosensitizer P1 in p-type dye-sensitized solar cells, showing that the dye undergoes electronic relaxation from the FC state to a CT state in a polar environment. The fluorescence is moderately quenched in solution and on mesoporous Al2O3 isolator but dramatically more on NiO semiconductor, with the sub-picosecond process assigned to hole injection confirming direct electron transfer from the FC state into the NiO valence band.
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2021)
Article
Chemistry, Physical
Yan Zhu, Thorsten Trupke, Ziv Hameiri
Summary: This study introduces a dynamic calibration method for injection-dependent carrier lifetime measurements, which compares lifetime measurements under quasi-steady-state and non-quasi-steady-state conditions to achieve precise calibration of experimental data and provide the net bulk doping concentration.
Article
Nanoscience & Nanotechnology
Yusuke Higashida, Shin-ya Takizawa, Masaki Yoshida, Masako Kato, Atsushi Kobayashi
Summary: In this study, a hydrophobic Ru-(II) dye-sensitized Pt-TiO2 nanoparticle photocatalyst was synthesized and integrated into DPPC lipid bilayer vesicles. The photocatalytic H-2 production activity was significantly enhanced in the presence of DPPC vesicles, indicating that the highly dispersed state of the hydrophobic Ru-(II) dye-sensitized Pt-TiO2 nanoparticles in the DPPC bilayer vesicles is crucial for achieving enhanced H-2 production activity in aqueous solution.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Adel Daoud, Ali Cheknane, Afek Meftah, Jean Michel Nunzi, Manal Shalabi, Hikmat S. Hilal
Summary: Dye-sensitized solar cells (DSSCs) are gaining attention as alternatives to traditional photovoltaic solar cells due to their easy manufacturing methods, understandable operating mechanisms, and environmental friendliness. In these solar cells, the competition between electron-hole charge separation and recombination processes determines the fate of the excited electron, while the type of electrolyte determines the competition between recombination reactions and dye regeneration. Despite early studies on combining p-DSSCs and n-DSSCs to create t-DSSCs, the performance is usually poor due to the competing processes, necessitating improvements in DSSCs. This article focuses on the effects of using NiO as a working electrode and discusses the impact of sensitizer, redox couple, and transparent conducting oxide electrode on cell performance.
Article
Environmental Sciences
Rania Anoua, Houda Lifi, Samira Touhtouh, Mohamed El Jouad, Abdelowahed Hajjaji, Mina Bakasse, Przemyslaw Plociennik, Anna Zawadzka
Summary: The study investigated the morphological and optical properties of Curcuma longa dye thin film, revealing granular structure and nanotubes shapes. Photoluminescence at low temperature and temperature effect from 77 to 300 K were discussed for the first time. The Curcuma longa dye showed potential for dye-sensitized solar cells with a power conversion efficiency of about 0.86%.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Energy & Fuels
Navdeep Kaur, Faizan M. Syed, Jeffrie Fina, Cheng-Yu Lai, Daniela R. Radu
Summary: This article focuses on enhancing the light-harvesting ability of dye-sensitized solar cells (DSSCs) by using silver nanoparticles thin films to improve light absorption. The results show that the silver nanoparticles thin films act as reflectors, which increase the reflectivity of the counter electrode and enhance the light absorption of the sensitized photoanodes, leading to improved power conversion efficiency.
IEEE JOURNAL OF PHOTOVOLTAICS
(2023)
Article
Engineering, Chemical
Juan Zhang, Jung Keun Cha, Xiuting Luo, Eun Ji Cho, Ji Hoon Kim, Soo Hyung Kim
Summary: This study aims to enhance the rapid manufacturing of high-efficiency dye-sensitized solar cells (DSSCs). By using an aerosol impactor, the adsorption of dyes on TiO2 nanoparticles is accelerated, and the photovoltaic characteristics of DSSCs are improved by assembling photoelectrodes with bilayered TiO2 thin films.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Chemistry, Physical
Shanmuganathan Venkatesan, Nguyen Huong Tra My, Hsisheng Teng, Yuh-Lang Lee
Summary: Thin films of solid-state polymer electrolytes (SSPEs) have been developed for dye-sensitized solar cells (DSCs) for the first time. Gel-electrolytes are prepared by utilizing a blend of poly(ethylene oxide) (PEO)/polyethylene glycol (PEG) and an acetonitrile-based iodide liquid electrolyte, and then cast onto a glass substrate to fabricate solvent-free SSPEs by evaporating the solvent. The SSPE films are sandwiched between photoelectrodes and counter electrodes to assemble the solid-state DSCs, and the PCE can be improved by introducing TiO2 nanofillers in the SSPEs. The high stability of the solid-state DSCs is demonstrated with a retention of 98% of their original efficiency after a 700-hour test period.
JOURNAL OF POWER SOURCES
(2023)
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, Multidisciplinary
Amanpal Singh, Yogesh Kumar Saini, Anuj Kumar, Sanjeev Gautam, Dinesh Kumar, Viresh Dutta, Han-koo Lee, Jongsu Lee, Sanjay Kumar Swami
Summary: Graphene oxide (GO) nano-powder is synthesized using the modified Hummer's method and thin films are deposited using a GO water solution. The thermal reduction of GO allows for control of microstructural, electrical, and optical properties. The addition of reduced GO nano-powder to TiO2 paste significantly improves the performance of dye-sensitized solar cells (DSSCs) compared to unmodified TiO2 photoanodes.
Article
Materials Science, Multidisciplinary
Gang Wang, Li-Jiao Ma, Bing-Xin Lei, Heng Wu, Zhao-Qing Liu
Summary: Two-dimensional Ti3C2 material with unique electronic, optical, and plasmonic properties has a wide range of applications in photovoltaics. In this study, Ti3C2 nanosheets-modified P25 nanoparticles were used as photoanode films for dye-sensitized solar cells, and the resulting efficiency was significantly improved compared to pure P25.
Article
Energy & Fuels
Bach Pham, Debora Willinger, Nelli Klinova McMillan, Jackson Roye, William Burnett, Anne D'Achille, Jeffery L. Coffer, Benjamin D. Sherman
Summary: Reported solar conversion efficiencies of aqueous dye-sensitized solar cells (DSSCs) lag behind traditional organic electrolyte-based systems, but offer potential for lower environmental impact and cost. Using SnO2-based photoanodes and additional TiO2 coatings can significantly improve the performance of aqueous DSSCs.
Article
Nanoscience & Nanotechnology
Pei-Hsuan Chang, Manik Chandra Sil, Kamani Sudhir K. Reddy, Ching-Hsuan Lin, Chih-Ming Chen
Summary: By synthesizing PI-COFs and doping them into the TiO2 photoelectrode of DSSC, the power conversion efficiency of the cell was improved, showcasing promise for enhancing solar efficiency in the development of DSSCs.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Dennis L. Ashford, Benjamin D. Sherman, Robert A. Binstead, Joseph L. Templeton, Thomas J. Meyer
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2015)
Review
Chemistry, Multidisciplinary
Dennis L. Ashford, Melissa K. Gish, Aaron K. Vannucci, M. Kyle Brennaman, Joseph L. Templeton, John M. Papanikolas, Thomas J. Meyer
Article
Chemistry, Inorganic & Nuclear
Zhen Fang, Akitaka Ito, Hanlin Luo, Dennis L. Ashford, Javier J. Concepcion, Leila Alibabaei, Thomas J. Meye
DALTON TRANSACTIONS
(2015)
Article
Chemistry, Physical
Katherine E. Michaux, Alessa A. Gambardella, Leila Alibabaei, Dennis L. Ashford, Benjamin D. Sherman, Robert A. Binstead, Thomas J. Meyer, Royce W. Murray
JOURNAL OF PHYSICAL CHEMISTRY C
(2015)
Article
Chemistry, Physical
Matthew V. Sheridan, Benjamin D. Sherman, Seth L. Marquard, Zhen Fang, Dennis L. Ashford, Kyung-Ryang Wee, Alexander S. Gold, Leila Alibabaei, Jennifer A. Rudd, Michael K. Coggins, Thomas J. Meyer
JOURNAL OF PHYSICAL CHEMISTRY C
(2015)
Article
Chemistry, Physical
M. Kyle Brennaman, Michael R. Norris, Melissa K. Gish, Erik M. Grumstrup, Leila Alibabaei, Dennis L. Ashford, Alexander M. Lapides, John M. Papanikolas, Joseph L. Templeton, Thomas J. Meyer
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2015)
Article
Chemistry, Physical
Benjamin D. Sherman, Dennis L. Ashford, Alexander M. Lapides, Matthew V. Sheridan, Kyung-Ryang Wee, Thomas J. Meyer
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2015)
Article
Chemistry, Physical
Jennifer A. Rudd, M. Kyle Brennaman, Katherine E. Michaux, Dennis L. Ashford, Royce W. Murray, Thomas. J. Meyer
JOURNAL OF PHYSICAL CHEMISTRY A
(2016)
Review
Chemistry, Multidisciplinary
M. Kyle Brennaman, Robert J. Dillon, Leila Alibabaei, Melissa K. Gish, Christopher J. Dares, Dennis L. Ashford, Ralph L. House, Gerald J. Meyer, John M. Papanikolas, Thomas J. Meyer
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2016)
Article
Chemistry, Multidisciplinary
David F. Zigler, Zachary A. Morseth, Li Wang, Dennis L. Ashford, M. Kyle Brennaman, Erik M. Grumstrup, Erinn C. Brigham, Melissa K. Gish, Robert J. Dillon, Leila Alibabaei, Gerald J. Meyer, Thomas J. Meyer, John M. Papanikolas
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2016)
Article
Chemistry, Multidisciplinary
Benjamin D. Sherman, Matthew V. Sheridan, Kyung-Ryang Wee, Seth L. Marquard, Degao Wang, Leila Alibabaei, Dennis L. Ashford, Thomas J. Meyer
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2016)
Article
Chemistry, Inorganic & Nuclear
Dennis L. Ashford, Christopher R. K. Glasson, Michael R. Norris, Javier J. Concepcion, Shahar Keinan, M. Kyle Brennaman, Joseph L. Templeton, Thomas J. Meyer
INORGANIC CHEMISTRY
(2014)
Article
Chemistry, Inorganic & Nuclear
Dennis L. Ashford, M. Kyle Brennaman, Robert J. Brown, Shahar Keinan, Javier J. Concepcion, John M. Papanikolas, Joseph L. Templeton, Thomas J. Meyer
INORGANIC CHEMISTRY
(2015)
Article
Chemistry, Inorganic & Nuclear
Derek M. Ryan, Michael K. Coggins, Javier J. Concepcion, Dennis L. Ashford, Zhen Fang, Leila Alibabaei, Da Ma, Thomas J. Meyer, Marcey L. Waters
INORGANIC CHEMISTRY
(2014)
Article
Chemistry, Inorganic & Nuclear
Annie B. McCullough, Jiaqi Chen, Nathaniel P. Valentine, Toney M. Franklin, Andrew P. Cantrell, Vayda M. Darnell, Qasim Qureshi, Kenneth Hanson, Steven M. Shell, Dennis L. Ashford
Summary: This study systematically analyzed the electrochemical, spectrochemical, and photophysical properties of a series of ruthenium polypyridyl complexes. The results showed that modifying the ligands can shift the absorption and emission energies, and revealed the interplay between red-shifting MLCT absorptions and accessing the dissociative (3)dd* states. This work provides important insights for the future design of ligands and complexes for photochemotherapies.
DALTON TRANSACTIONS
(2022)