Dye sensitized solar cells were fabricated with DyLight680 (DL680) dye and its corresponding europium conjugated dendrimer, DL680-Eu-G5PAMAM, to study the effect of europium on the current and voltage characteristics of the DL680 dye sensitized solar cell. The dye samples were characterized by using Absorption Spectroscopy, Emission Spectroscopy, Fluorescence lifetime and Fourier Transform Infrared measurements. Transmission electron microscopy imaging was carried out on the DL680-Eu-G5PAMAM dye and DL680-Eu-G5PAMAM dye sensitized titanium dioxide nanoparticles to analyze the size of the dye molecules and examine the interaction of the dye with titanium dioxide nanoparticles. The DL680-Eu-G5PAMAM dye sensitized solar cells demonstrated an enhanced solar-to-electric energy conversion of 0.32% under full light illumination (100 mWcm, AM 1.5 Global) in comparison with that of DL680 dye sensitized cells which recorded an average solar-to-electric energy conversion of only 0.19%. The improvement of the efficiency could be due to the presence of the europium that enhances the propensity of dye to absorb sunlight.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5976458 | PMC |
| http://dx.doi.org/10.4172/2157-7439.1000496 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Asymmetrically PEGylated and amphipathic heptamethine indocyanine dyes potentiate radiotherapy of renal cell carcinoma via mitochondrial targeting.
J Nanobiotechnology
December 2024
Institute of Combined Injury, National Key Laboratory of Trauma and Chemical Poisoning, Army Key Laboratory of Nanomedicine, Department of Military Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing, 400038, China.
Enhancing the sensitivity of radiotherapy (RT) towards renal cell carcinoma (RCC) remains a challenge because RCC is a radioresistant tumor. In this work, we design and report asymmetrically Polyethylene Glycol (PEG)ylated and amphipathic heptamethine indocyanine dyes for efficient radiosensitization of RCC treatment. They were synthesized by modifying different lengths of PEG chains as hydrophilic moieties on one N-alkyl chain of a mitochondria-targeting heptamethine indocyanine dye (IR-808), and a radiosensitizer 2-nitroimidazole (NM) as a hydrophobic moiety on another N-alkyl chain.
View Article and Find Full Text PDFUltra-fast prediction of D-π-A organic dye absorption maximum with advanced ensemble deep learning models.
Spectrochim Acta A Mol Biomol Spectrosc
December 2024
Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City, Cairo 11884, Egypt. Electronic address:
The quick and precise estimation of D-π-A Organic Dye absorption maxima in different solvents is an important challenge for the efficient design of novel chemical structures that could improve the performance of dye-sensitized solar cells (DSSCs) and related technologies. Time-Dependent Density Functional Theory (TD-DFT) has often been employed for these predictions, but it has limitations, including high computing costs and functional dependence, particularly for solvent interactions. In this study, we introduce a high-accuracy and rapid deep-learning ensemble method using daylight fingerprints as chemical descriptors to predict the absorption maxima (λ) of D-π-A organic dyes in 18 different solvent environments.
View Article and Find Full Text PDFEnhanced Photocatalytic Nitrogen Fixation over Nano-UiO-66(Zr) via Natural Chlorophyll Sensitization.
Inorg Chem
December 2024
School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225009, P. R. China.
Metal-organic frameworks (MOFs) are potential semiconductor materials, but they still face limitations, such as insufficient photoresponse, high recombination rates, and inadequate N adsorption/activation capabilities. Herein, a UiO-66-based system is designed via a natural chlorophyll sensitization strategy. Density functional theory calculations confirm the coordination interactions between chlorophyll and UiO-66.
View Article and Find Full Text PDFInterfacing CuO, CuBiO, and protective metal oxide layers to boost solar-driven photoelectrochemical hydrogen evolution.
Dalton Trans
December 2024
Energy Materials Laboratory, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
This article reports the development of CuO|CuBiO photocathodes stabilized by protective layers of TiO, MgO, or NiO, with Pt or MoS nanoparticles serving as co-catalysts to facilitate H evolution. Most notably, this work demonstrates the first application of MgO as a protection/passivation layer for photocathodes in a water-splitting cell. All configurations of photocathodes were studied structurally, morphologically, and photoelectrochemically revealing that CuO|CuBiO|MgO|Pt photocathodes achieve the highest stable photocurrent densities of -200 μA cm for over 3 hours with a Faradaic efficiency of ∼90%.
View Article and Find Full Text PDFpH-Responsive Persistent Luminescent Nanosystem with Sensitized NIR Imaging and Ratiometric Imaging Modes for Tumor Surgery Navigation.
ACS Appl Mater Interfaces
December 2024
Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
Owing to autofluorescence-free feature, persistent luminescent (PersL) nanoparticles (PLNPs) become potential materials for tumor surgical navigation. However, it is still challenging to enhance PersL intensity, contrast ratio, and imaging stability so as to meet clinical demand and avoid missed detection of microlesions. Herein, integrating a tumor microenvironment (TME)-responsive strategy, sensitization enhancement, and internal-standard ratiometric method, a dual-mode PersL imaging strategy is proposed: After loading pH-responsive fluorescent molecule Rh-ADM on PLNPs ZnGaO:Cr,Mn (ZGCM-Rh8), the fluorescence resonance energy transfer (FRET) pathways between Cr and Rh-ADM, as well as Mn and Rh-ADM, could sensitize the NIR PersL emitted by Cr and quench the green PersL from Mn at acidic TME, respectively.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!