Materials Literature
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CuInGaSe(2) (CIGS), a promising thin film solar cell material, has gained lots of attention in decades due to its high energy conversion efficiency and potential lower manufacture cost over conventional Si solar cells. As a cheaper processing method compared to vacuum-based techniques, solution-based deposition has be…
Porous nanosheet-assembled ZnO microspheres (PNMSs) were synthesized via one-pot hydrothermal treatment followed by calcination and were used as photoanodes for dye-sensitized solar cells (DSSCs). An overall light conversion efficiency of up to 5.16% has been achieved with this unitary material and structure. Superior…
Crystallized mesoporous tantalum pentoxide spheres (CMTS) with particle diameters of ca. 100–500 nm and composed of Ta2O5 nanocrystals were synthesized for the first time by a combination of the sol–gel process and heat-treatment with the aid of carbon reinforcement. The specific surface area of the CMTS was up to 105…
Submicrometer-sized hollow TiO(2) spheres are directly self-assembled from TiO(2) nanoparticles without using any template or surfactant as a scattering layer for dye-sensitized solar cells, showing good visible light scattering match to significantly improve the photoconversion efficiency.
An iodine-catalyzed four-component reaction of 1,3-dicarbonyl compounds, amines, aldehydes and nitroalkanes afforded polysubstituted pyrroles under a metal free condition. Simplicity, low cost and good yields are the key features of this methodology. The mechanism of this four component process is discussed and struct…
In this work, we focus on the front and back interfaces of absorber, which, along with the crystalline quality of the absorber, are definitely important in obtaining high efficiency for Cu2ZnSnS4 (CZTS) thin-film solar cells. For the back interface, the ZnS segregation is a well-known problem for formation of CZTS abs…
This article reviews the recent advances in organic electronics based on polymer blends with one-dimensional (1D) nanowires (NWs) of π-conjugated polymers. Self-assembled polymer semiconducting NWs are fascinating building blocks for their directional extension of inter- and intramolecular π-conjugation. This extensiv…
We continue a series of papers in which the chemical importance of the linear response kernel χ(r,r') of conceptual DFT is investigated. In previous contributions (J. Chem. Theory Comput. 2010, 6, 3671; J. Phys. Chem. Lett. 2010, 1, 1228; Chem. Phys. Lett. 2010, 498, 192), two computational methodologies were presente…
Solvothermal reactions of aromatic quaterphenyl-2,5,2′,5′-tetracarboxylic acid (H4qptc) ligand and transitional metal cations of MII (M = Co, Ni, Mn, Cu, Zn) in the presence of 1,10-phenanthroline (phen) afford five new coordination polymers (CPs), namely, {[M(H2qptc)(phen)(H2O)2]·2H2O}n (M = Co (1), Ni (2)), [Mn(qptc…
A series of organic dyes containing oligo-phenothiazine were synthesized and used effectively on the fabrication of dye-sensitized solar cells (DSSCs). In these compounds the phenothiazine moiety functions both as an electron donor and as a π-bridge. These materials exhibit considerably high values of open-circuit vol…
As a counter electrode for dye-sensitized solar cells (DSSCs), MoN presents a high intrinsic electrocatalytic activity for the reduction of triiodide ions. However, the photovoltaic performance of DSSCs with a MoN counter electrode is hindered by the large diffusion impedance of the MoN electrode. In response to this…
Through elongating the end or side alkyl chains of dye molecules, we decorate anatase nanocrystals with a thicker organic assembly featuring a smaller tilt angle of the D-π-A backbone with respect to the surface normal, which retards the interfacial charge recombination and confers a higher photovoltage output on meso…
A native protein in a biological system spontaneously produces large and elegant assemblies via self-assembly or assembly with various biomolecules which provide non-covalent interactions. In this context, the protein plays a key role in construction of a unique supramolecular structure operating as a functional syste…
Dye-sensitized solar cells (DSSCs), as a type of promising energy conversion device, have received much attention in the past two decades due to their high efficiency and low cost. In order to achieve higher energy conversion efficiency, different TiO2 structures have been employed to fulfill the requirements of large…
Sequential boronate esterification of benzene-1,4-diboronic acid with pentaerythritol induced hierarchical molecular self-assembly to produce mono-dispersed flower-like microparticles. ATR-FT-IR, PXRD, 13C-CP-MAS and 11B-DD-MAS NMR spectra indicate that the particles consist of zigzag-shaped packing structures of poly…
Solvent vapour annealing (SVA), which consists of exposing the active layer of organic films to a vapour of solvent directly after deposition, has been used in small molecule bulk heterojunction (SM-BHJ) solar cell devices whose active layer consisted of 3,6-bis(5-(benzofuran-2-yl)thiophen-2-yl)-2,5-bis(2-ethylhexyl)p…
Dendritic materials are attractive as catalysts due to their highly ordered structure and high surface area. Herein, we report a NiFe dendritic nanostructure obtained by a simple electrodeposition without template. The control of concentration, potential, and pH plays an important role in the formation of the dendriti…
An amenable method for improving rate performance of Li4Ti4.85Al0.15O12 electrode by post-synthesis treatment in formaldehyde aqueous solution at room temperature is introduced. The as-prepared samples are characterized by XRD, BET, SEM, HR-TEM, XPS and electronic conductivity measurement. The treatment causes no noti…
International audience
A novel one-dimensional (1D) V2O3@carbon nanocomposite has been successfully synthesized for the first time. In the synthesis procedure, the previously obtained V2O5·xH2O nanobelts act as template. By coating the nanobelts with a layer of polymerized C species under hydrothermal conditions followed by a calcination tr…