A5085039238- TiO2 Photocatalysis and Solar Cells
- Advanced Photocatalysis Techniques
- Quantum Dots Synthesis And Properties
- Advanced Nanomaterials in Catalysis
- Perovskite Materials and Applications
- Mesoporous Materials and Catalysis
- Dendrimers and Hyperbranched Polymers
- Synthesis and properties of polymers
- Conducting polymers and applications
- Pigment Synthesis and Properties
- Electrochemical Analysis and Applications
- Cellular transport and secretion
- Photochemistry and Electron Transfer Studies
- interferon and immune responses
- Nonlinear Optical Materials Studies
- Polyoxometalates: Synthesis and Applications
- Copper-based nanomaterials and applications
- Analytical Chemistry and Sensors
- Extraction and Separation Processes
- Neurobiology and Insect Physiology Research
- Porphyrin and Phthalocyanine Chemistry
- Cancer Mechanisms and Therapy
- Protein Structure and Dynamics
- Monoclonal and Polyclonal Antibodies Research
- RNA regulation and disease
KTH Royal Institute of Technology
2018-2022
Stony Brook University
2022
Uppsala University
2013-2019
Dalian University of Technology
2009-2016
State Key Laboratory of Fine Chemicals
2016
Hebei University of Science and Technology
2012-2015
Angstrom Designs (United States)
2015
Nanyang Technological University
2014
Dalian University
2009-2012
Through introducing an energy antenna system into a simple phenoxazine dye (TH301), novel and efficient TH305 was designed synthesized for application in sensitized solar cell with prominent overall conversion efficiency of 7.7%.
The most commonly used redox mediators in dye-sensitized solar cells (DSCs), iodide/triiodide and cobalt trisbipyridine ([Co(bpy)3]2+/3+), were successfully replaced by bis(2,9-dimethyl-1,10-phenanthroline)copper(I/II) ([Cu(dmp)2]1+/2+). use of the copper complex based electrolyte led to an exceptionally high photovoltaic performance 8.3% for LEG4-sensitized TiO2 cells, with a remarkably open-circuit potential above 1.0 V at 1000 W m–2 under AM1.5G conditions. has higher diffusion...
Photoelectrochemical approach to solar energy conversion demands a kinetic optimization of various light-induced electron transfer processes. Of great importance are the redox mediator systems accomplishing processes at semiconductor/electrolyte interface, therefore affecting profoundly performance photoelectrochemical cells. Here, we develop strategy-by addition small organic donor, tris(4-methoxyphenyl)amine, into state-of-art cobalt tris(bipyridine) electrolyte-to significantly improve...
A new strategy in which the anchoring group is separated from acceptor groups of dyes was developed; among these dyes, HY103 dye gives a maximum IPCE value 86% at 660 nm and an eta 3.7% NIR region reported DSCs.
Postsynthesis thermal treatments are key to promote crystallinity and reduce the defect density in solution-processed nanomaterials. In particular, annealing atmosphere strongly influences functional properties of ZnO nanowires (NWs) specifically their performance as photoanodes dye-sensitized solar cells (DSCs). We prepared vertically aligned NWs by a low-cost, high-yield, up-scalable hydrothermal method studied effect postannealing on optoelectronic electrodes DSCs. When under argon,...
Blue and green dyes as well NIR-absorbing have attracted great interest because of their excellent ability absorbing the incident photons in red near-infrared range region. A novel blue D−π–A dye (Dyenamo Blue), based on diketopyrrolopyrrole (DPP)-core, has been designed synthesized. Assembled with cobalt bipyridine-based electrolytes, device Dyenamo achieved a satisfying efficiency 7.3% under one sun (AM1.5 G). The co-sensitization strategy was further applied this organic together (D35)....
In this work, we explore the use of cobalt complex redox shuttles in dye sensitized solar cells (DSCs) based on ZnO nanowires (NWs). Arrays vertically aligned NWs produced by a low-cost hydrothermal method are used to fabricate DSCs with [Co(bpy)3]2+/3+ as electrolyte. A direct comparison performance [Co(bpy)3]2+/3+-based DSC I–/I3–-based ones demonstrates higher suitability complex, both terms larger open circuit voltage (VOC) and photocurrent. The electrolyte results VOC enhancements above...
An organic dye JY1 bearing a nitro group was designed, synthesized and applied in DSCs. unusual colour change observed when the voltage to device reversed which accompanied by five-fold increase cell efficiency. We propose that applying bias enabled attachment of groups TiO2 surface.
Supramolecular interactions based on porphyrin and fullerene derivatives were successfully adopted to improve the photovoltaic performance of p-type dye-sensitized solar cells (DSCs). Photoelectron spectroscopy (PES) measurements suggest a change in binding configuration ZnTCPP after co-sensitization with C60PPy, which could be ascribed supramolecular interaction between C60PPy. The ZnTCPP/C60PPy-based DSC has been increased by factor 4 comparison alone. At 560 nm, IPCE value DSCs...
Minimizing the driving force required for regeneration of oxidized dyes using redox mediators in an electrolyte is essential to further improve open-circuit voltage and efficiency dye-sensitized solar cells (DSSCs). Appropriate combinations dye molecules should be explored achieve this goal. Herein, we present a triphenylamine dye, LEG4, combination with TEMPO-based acetonitrile (E(0) = 0.89 V vs. NHE), reaching up 5.4% under one sun illumination 40% performance improvement compared...
We applied organic donor-π-acceptor (D-π-A) sensitizers for photoelectrochemical polymerization (PEP) because of their appropriate energy levels and high light absorption. The polymerized conducting polymer PEDOT was used as hole conductor in all-solid-state dye-sensitized solar cells (ssDSCs). By combination the D-π-A generated from PEP bis-EDOT acetonitrile, resulting device showed an average power conversion efficiency 5.6%. Furthermore, aqueous micellar electrolytic medium also employed...
The scaffold protein PSD-95 links postsynaptic receptors to sites of presynaptic neurotransmitter release. Flexible linkers between folded domains in enable a dynamic supertertiary structure. Interdomain interactions within the PSG supramodule, formed by P DZ3, S H3, and G uanylate Kinase domains, regulate activity. Here we combined discrete molecular dynamics single molecule Förster resonance energy transfer (FRET) characterize with time resolution spanning picoseconds seconds. We used FRET...
A series of heteroleptic Cu(I) diimine complexes with different ancillary ligands and 6,6'-dimethyl-2,2'-bipyridine-4,4'-dibenzoic acid (dbda) as the anchoring ligand were self-assembled on TiO2 surfaces used dyes for dye-sensitized solar cells (DSSCs). The binding to surface was studied by hard X-ray photoelectron spectroscopy a bromine-containing complex, confirming complex formation. performance all assessed rationalized basis their respective ligand. DSSC photocurrent-voltage...
Dye-sensitized mesoporous TiO2 films have been widely applied in energy and environmental science related research fields. The interaction between accumulated electrons inside cations the surrounding electrolyte at TiO2/dye/electrolyte interface is, however, still poorly understood. This is undoubtedly important for both device performance fundamental understanding. In present study, Stark effects of an organic dye, LEG4, adsorbed on were well characterized used as a probe to monitor local...
A new kind of hybrid electrolyte with S2−/Sx2− and I− was invented, the system demonstrated to outperform well-known I−/I3− redox in DSCs. An efficiency 9.1% achieved our lab under AM 1.5 illumination using dye N719, considerably higher than 8.0% I−/I3−-based electrolyte.
Illustrious pair: A tandem solar cell employs a front sub-cell with ZrO2-doped nanostructured TiO2 and an organic dye to harvest 400–750 nm sunlight back another normal electrode capture 500–800 sunlight. high VOC JSC are achieved in the visible region of spectrum, at same time near-IR light is harvested. Detailed facts importance specialist readers published as ”Supporting Information”. Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted by authors....
A new TEMPO-Co tandem redox system with TEMPO and Co(bpy)3 (2+/3+) has been investigated for the use in dye-sensitized solar cells (DSSCs). large open-circuit voltage (VOC ) increase, from 862 mV to 965 mV, was observed system, while short-circuit current density (JSC maintained. The conversion efficiency increase 7.1 % containing single couple, 8.4 system. reason VOC overall is ascribed involvement of partial regeneration sensitizing dye molecules by TEMPO. This assumption can be verified...
Near-dye experience: Long, flexible carbon chains in the lateral anchoring groups of donor part a donor–π acceptor organic dye increase power conversion efficiency dramatically. This performance enhancement can be ascribed to prevention formation molecular aggregates on semiconductor nanoparticles, resulting lower recombination rate between transported electrons and I3− ions. A cell based new dye, HY113, gives maximum IPCE value 93 % at 660 nm. Detailed facts importance specialist readers...
A series of novel laterally anchoring tetrahydroquinoline derivatives have been synthesized and investigated for their use in NiO-based p-type dye-sensitized solar cells.
A high power conversion efficiency (PCE) of 5.5 % was achieved by efficiently incorporating a diketopyrrolopyrrole-based dye with conducting polymer poly(3,4-ethylenediothiophene) (PEDOT) hole-transporting material (HTM) that formed in situ, compared PCE 2.9 for small molecular spiro-OMeTAD-based solid-state solar cells (sDSCs). The PEDOT-based sDSCs is mainly attributed to the significantly enhanced charge-collection efficiency, as result three-order-of-magnitude higher hole conductivity...