Dye-sensitized solar cells (DSSCs) are considered a promising future source of low-cost solar power. At present, however, the most efficient DSSC designs utilize iodide-based electrolytes, which are highly corrosive and absorb strongly in some regions of the visible spectrum. We have been able to generate significant efficiency increases in DSSCs employing a novel sulfide/thiolate redox couple ...

In this study, poly(3,3-dibenzyl-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepine)/platinum composite films (PProDOT-Bz2/Pt) were used as counter electrodes (CEs) in dye-sensitized solar cells (DSSCs). The composite films were prepared on fluorine-doped tin oxide (FTO) glass by radio frequency (RF) sputtering to deposit platinum (Pt) for 30 s. Afterwards, PProDOT-Bz2 was deposited on the Pt–FTO glass...

We demonstrate a simple method to fabricate open-ended TiO(2) nanotube (NT) based dye-sensitized solar cells (DSSCs), where the NTs are attached to either TiO(2) nanorods (NRs) grown on fluorine-doped tin oxide (FTO) or FTO directly by nanoparticles (NPs). A completely hole-through TiO(2) NT layer is fabricated via a two-step anodization with heat treatment immediately after the first anodizati...

We report the synthesis and the optoelectronic characterization of three new 4H-pyran-4-ylidene and thiazole derivatives (pyt) as metal-free organic dyes for solid-state dye-sensitized solar cells (DSSCs). We investigate the performance and the long-term stability of devices employing pyt dyes functionalized with carboxylic and phosphonic acids as TiO2 anchoring groups. In contrast to reports o...

During the last four centuries, there have been extensive research activities looking for green and clean sources of energy instead traditional (fossil) in order to reduce accumulation gases environmental pollution. Natural dye-sensitized solar cells (DSSCs) are one most promising types photovoltaic generating at a low cost. In this study, DSSCs were collected experimentally tested using differ...

The charge transfer (CT) properties of photosensitizers largely determine the photovoltaic performances dye sensitized solar cells (DSSCs). Thus, understanding CT is key to further improving DSSCs. We herein investigated underlying relationship between molecular structures and using resonance Raman (RR) spectroscopy density functional theory (DFT) calculations. RR combined with DFT calculations...

Electron injection from a photoexcited molecular sensitizer into a wide-bandgap semiconductor is the primary step toward charge separation in dye-sensitized solar cells (DSSCs). According to the current understanding of DSSCs functioning mechanism, charges are separated directly during this primary electron transfer process, yielding hot conduction band electrons in the semiconductor and positi...

In this work, a proposed high-efficiency and low-cost photovoltaic water-pumping system based on semitransparent dye-sensitized solar cells (DSSCs) is presented. DSSCs are third-generation photovoltaics that have gained lot of interest as promising alternative for silicon cells. fabricated at low cost temperature present power conversions with high efficiency, exceeding 14%, thanks to transpare...