Article
Chemistry, Physical
Mahmoud Hezam, Mohammed Qasi Alsubaie, Ahmad Algarni, Hamid Ghaithan, Joselito Labis, Mohammad Alduraibi
Summary: This study demonstrates the tuning of ZnO nanosheet-nanowire morphology by adjusting the NaOH concentration in a low-temperature chemical bath, resulting in a variety of nano/microstructures with different sizes and aspect ratios. Photoluminescence spectra were mainly influenced by violet emission from Zn interstitial related defects formed during growth. In dye-sensitized solar cells, ZnO nanosheets with a thickness of 30-40 nm exhibited superior performance in terms of J-V characteristics and transport dynamics.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Engineering, Environmental
Shanmuganathan Venkatesan, Tzu-Hsien Hsu, Xin-Wen Wong, Hsisheng Teng, Yuh-Lang Lee
Summary: By using transparent photoelectrodes and counter electrodes in tandem DSSCs, and regulating the film thicknesses of the top and bottom cells, both light harvest and charge transfer performance can be improved simultaneously, leading to an increased conversion efficiency of the solar cells.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Ramarajan Ramanathan, Michael Zinigrad, Dhivyaprasath Kasinathan, Ranjith Kumar Poobalan
Summary: This study focuses on synthesizing composite materials based on Zn2SnO4 as photoanodes for dye sensitized solar cells (DSSCs), aiming to improve the power conversion efficiency. The synthesized composite materials exhibit better optical and structural properties, leading to higher performance compared to the pristine material.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Wen-Feng Lai, Yu-Chih Chiang, Jiun-How Yueh, Tz-Feng Lin, Jih-Hsin Liu, Ying-Nan Lai, Wen-Hsuan Lai, Wei-Chou Hsu, Chia-Yi Huang
Summary: In this study, a counter electrode is fabricated by coating a Pt ribbon onto a fluorine-doped tin oxide glass substrate with a Pt layer. The experimental results show that the photoelectric efficiency of the dye-sensitized solar cell (DSSC) with the Pt ribbon is 5.32%, which is 21% higher than that of the DSSC without a Pt ribbon. This suggests that Pt ribbons can increase the photoelectric efficiencies of DSSCs. The DSSC with the Pt ribbon has a large photoelectric efficiency of 5.32% due to its protrusive structure with specific channels for directional electron transport and its large surface area.
Article
Energy & Fuels
Mohamed M. Ibrahim, Nagi M. El-Shafai, Ibrahim M. El-Mehasseb, Safaa N. Abdou, Hamdy S. El-Sheshtawy
Summary: Nonfullerene acceptors (NFAs) have been explored for organic dye-sensitized solar cells, with three alkyl derivatives designed from thiobarbituric acid and triphenylamine. Density functional theory (DFT) calculations and TD-DFT calculations showed that alkyl substituents facilitated intramolecular charge transfer, with N-ethyl and N-benzyl derivatives showing better performance in solar cell applications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Shanmuganathan Venkatesan, Wei-Hsun Lin, Tzu-Hsien Hsu, Hsisheng Teng, Yuh-Lang Lee
Summary: The research focuses on developing high-performance counter electrodes for bifacial dye-sensitized solar cells using nonplatinum material to achieve low-cost and high-efficiency solar cells. By controlling the thickness of the PEDOT film, higher cell performance was achieved. The newly developed sandwich photoelectrode structure exhibited higher efficiency for the solar cells.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Review
Chemistry, Multidisciplinary
Ana Belen Munoz-Garcia, Iacopo Benesperi, Gerrit Boschloo, Javier J. Concepcion, Jared H. Delcamp, Elizabeth A. Gibson, Gerald J. Meyer, Michele Pavone, Henrik Pettersson, Anders Hagfeldt, Marina Freitag
Summary: Dye-sensitized solar cells (DSCs) and dye-sensitized photoelectrochemical cells (DSPECs) have seen a revival in recent years as they offer unique properties such as low cost, non-toxic materials, colorfulness, transparency, and efficiency in low light conditions. This review covers advancements in DSC technology over the past decade, including theoretical studies, characterization techniques, materials, applications, and commercialization efforts by various companies.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Engineering, Electrical & Electronic
Nazir Mustapha, Muhammad Abdel-Shakour, Idriss Bedja, M. Abdel Rafea
Summary: The photovoltaic performance of black dye-based dye-sensitized solar cells can be improved by introducing long alkoxy group, tuning anchoring parts, and pi-spacer, which reduces dye aggregation and improves sensitizer coverage.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Govind Sharma, Chandan Dawo, Komal Mulchandani, Uttam K. Kumawat, R. K. Singhal, Chhagan Lal
Summary: Impedance and modulus spectroscopy were used to study the charge carrier dynamics of N719 dye-sensitized solar cells (DSSC). Significant changes were observed in the low-frequency regime under both light-off and illumination conditions. The N719 DSSC exhibited high performance with a JSC of 10.89 mA/cm2, a VOC of 0.672 V, a fill-factor of 0.65, and a photoconversion efficiency of 4.81%. The Nyquist plots showed small arcs at higher frequencies and large arcs at lower frequencies, indicating deviation from ideal Debye relaxation. The dielectric relaxation followed the interfacial polarization of Maxwell-Wagner type, possibly due to grain boundary effects. Comparative analysis revealed localized carrier relaxation in this N719 DSSC, correlated with conductivity hopping process.
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
Materials Science, Coatings & Films
Philipp G. Gruetzmacher, Michael Schranz, Chia-Jui Hsu, Johannes Bernardi, Andreas Steiger-Thirsfeld, Lars Hensgen, Manel Rodriguez Ripoll, Carsten Gachot
Summary: The power conversion efficiency (PCE) of PEB and PUB as sensitizers of dye-sensitized solar cells is investigated using first-principles calculations. Different adsorption models are constructed for PEB/PUB on the TiO2 surface, and their geometrical configurations and electronic properties are optimized. The obtained PCEs confirm the credibility of the current method and predict that PUB and PEB are promising candidate sensitizers for dye-sensitized solar cells.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Dongting Wang, Yuchen Li, Yimin Ding, Xiangchen Jia, Daopeng Zhong, Xianxi Zhang, Jinsheng Zhao, Yuzhen Fang
Summary: Synthesizing SnO2 composite nanostructures has been a challenge, but by adjusting operating variables, a hybrid structure of irregular zero-dimensional nanoparticles and two-dimensional nanosheets has been successfully created. Dye-sensitized solar cells constructed with this composite exhibited the highest conversion efficiency, thanks to the combined effects of each component.
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
Chemistry, Physical
Yogendra Nath Chouryal, Rahul Kumar Sharma, Neeraj Tomar, Neelam Yadav, Heera Lal Kewat, Ishfaq Abdullah Wani, Sandeep Nigam, Praveen Kumar Surolia, Sri Sivakumar, Pushpal Ghosh
Summary: This study reports on the synthesis of phase pure, cubic BaGdF5:Er/Yb-doped nanocrystals using ionic liquids, which can be used as an absorption layer in dye-sensitized solar cells (DSSCs) to enhance solar energy conversion efficiency. Bright-green and red emissions were observed from the nanoparticles. The DSSCs with BaGdF5:Er3+(1%)/Yb3+(10%)/TiO2 absorption layer achieved the highest photon conversion efficiency of 7.75% and current density of 15.9 mA/cm2, showing a significant enhancement compared to those with only TiO2 layer.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Varishetty Madhu Mohan, Kenji Murakam, Madhavi Jonnalagadda, V. R. Machavaram
Summary: Pure TiO2 and surface-modified TiO2 films were developed using spray pyrolysis technique, with similar crystal structure and optical absorption properties. However, the addition of ZnO layer in SMT films increased impedance and hindered reverse electron transmission. Thus, the efficiency of DSSCs improved from 8.25% to 9.3%.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Electrochemistry
A. Manjceevan, J. Bandara
ELECTROCHIMICA ACTA
(2018)
Article
Materials Science, Multidisciplinary
Qingqing Tao, Zhida Wang, Bandara Jayasundera, Changqing Guo, Yuan Gan, Liang Zhang, Zhuoxin Lu, Hongyi Tan, Changfeng Yan
JOURNAL OF MATERIALS SCIENCE
(2018)
Article
Acoustics
Rushdi D. Senevirathne, Lahiru K. Abeykoon, Nuwan L. De Silva, Chang-Feng Yan, Jayasundera Bandara
ULTRASONICS SONOCHEMISTRY
(2018)
Article
Chemistry, Physical
Nuwan Lakshitha De Silva, A. C. A. Jayasundera, A. Folger, O. Kasian, S. Zhang, Chang-Feng Yan, C. Scheu, J. Bandara
CATALYSIS SCIENCE & TECHNOLOGY
(2018)
Article
Chemistry, Physical
Zhang Liang, Chang-Feng Yan, Sami Rtimi, Jayasundera Bandara
APPLIED CATALYSIS B-ENVIRONMENTAL
(2019)
Article
Chemistry, Physical
Dulanji S. Dharmagunawardhane, Nuwan L. De Silva, Udara Bimendra Gunatilake, Chang-Feng Yan, Jayasundera Bandara
MOLECULAR CATALYSIS
(2019)
Article
Chemistry, Physical
K. M. S. D. B. Kulathunga, Chang-Feng Yan, Jayasundera Bandara
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2020)
Article
Energy & Fuels
Mohaiyadeen Aliyar Farhana, Jayasundera Bandara
Summary: In thin-film photovoltaic, Sb2S3 is a leading absorber material and optimizing the electron transport layer, light harvesting layer, and hole transport layer can significantly improve solar cell performance. The precise control of traps, surface defect states, and lattice dislocations in Sb2S3 is crucial for achieving high efficiency.
Article
Chemistry, Physical
Jayasundera Bandara, Chathurika Rajapaksha, C. A. Jayasundera, H. Tan, C. -F. Yan
Summary: Surface-oxygen vacancies were generated to enhance the near-IR light response of SrTiO3 photocatalyst. The hydrogen production rates for SrTiO3-Ov under full solar spectrum, visible and IR radiation were 100, 25 and 10 mlg(-1)h(-1) respectively. The mid-gap Ov and Ti3+ states in SrTiO3-Ov are key factors in the origin of the near-IR responses of the catalyst and the feasibility of using low-photonic-energy IR light to produce hydrogen by water splitting was demonstrated.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Nanoscience & Nanotechnology
Mohaiyadeen Aliyar Farhana, Arumukham Manjceevan, Jayasundera Bandara
Summary: Although many environmentally friendly and non-toxic materials have been investigated for photovoltaic conversion (PVC) applications, Sb2S3 is the preferred material due to its optical response and electrical properties. However, its efficiency is lower than predicted, and this review aims to understand and improve current device performance by studying structural and morphological changes in Sb2S3 thin films. The research discusses the fundamental properties of Sb2S3 and how fabrication techniques and conditions affect solar cell performance.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2023)
Article
Engineering, Environmental
S. A. D. A. Sumithraarachchi, B. D. K. K. Thilakarathna, Jayasundera Bandara
Summary: Investigation of special wetting materials for oil-water separation showed that enhanced superhydrophobic properties were achieved by cross-linking polystyrene with acrylic acid on TiO2 nanoparticles. The membranes fabricated demonstrated exceptional oil-water separation efficiencies and flux rates due to their excellent oil-wetting properties. It was confirmed that the oil-water separation efficiency, reusability, durability, and hydrophobicity of the membranes can be enhanced through appropriate fabrication methods.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Nanoscience & Nanotechnology
Hong-Yi Tan, Liang Zhan, Chang-Feng Yan, Lahiru K. Abeykoon, Nuwan L. De Silva, Jayasundera Bandara
Article
Chemistry, Multidisciplinary
Muammer Y. Yaman, Ahmet Selim Han, Jayasundera Bandara, Cuneyt Karakaya, Omer Dag
Article
Electrochemistry
Arumukham Manjceevan, Jayasundera Bandara
ELECTROCHIMICA ACTA
(2017)
Article
Environmental Sciences
Udara Bimendra Gunatilake, Jayasundera Bandara
