A highly efficient flexible dye-sensitized solar cell based on nickel sulfide/platinum/titanium counter electrode

Abstract

A composite film of nickel sulfide/platinum/titanium foil (NiS/Pt/Ti) with low cost and high electrocatalytic activity was synthesized by the use of an in situ electropolymerization route and proposed as a counter electrode (CE) catalyst for flexible dye-sensitized solar cells (FDSSCs). The FDSSC with the NiS/Pt/Ti CE exhibited a comparable power conversion efficiency of 7.20% to the FDSSC with the platinum/titanium (Pt/Ti) CE showing 6.07%. The surface morphology of the NiS/Pt/Ti CE with one-dimensional (1D) structure is characterized by using the scanning electron microscopy (SEM). The NiS/Pt/Ti CE also displayed multiple electrochemical functions of excellent conductivity, great electrocatalytic ability for iodine/triiodine, and low charge transfer resistance of 2.61 ± 0.02 Ω cm2, which were characterized by using the cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and Tafel polarization plots. The photocurrent-photovoltage (J-V) character curves were further used to calculate the theoretical optical light performance parameters of the FDSSCs. It may be said that the NiS/Pt/Ti counter electrode is a promising catalytic material to replace the expensive platinum in FDSSCs.

Point-of-Care Diagnostics: Recent Developments in a Connected Age

“…The preparation of serum samples to use on the chip required centrifugation steps as well as laboratory mixing and incubation with Thromboplastin D reagent (a clotting reagent) 100 , and the chip was read by a plate reader 100 . Another device, using laboratory separation of whole blood to obtain serum, could detect gastric cancer at the POC 101 . These devices, as they stand, require a degree of sample preparation which is best performed in a setting with infrastructure and moderate budget, but could make an important impact in POC monitoring and diagnostics of patients.…”

Metal-containing and related polymers for biomedical applications

“…Sarantopoulou et al used Zn-Pc-containing zero generation polyamidoamine (G0-PAMAM) as a sensitizer to treat symptomatic and asymptomatic human carotid tissues. 211 Compared to the deposition on atheromatous tissues with different aggregation features between G0 and G0/ZnPc nanoparticles, the deposition of nanodrug carriers on healthy tissues resulted in an inverse impact. The results indicated the importance of PAMAM dendrimer carriers as a novel and promising PDT platform for atherosclerosis therapies.…”

Nanotechnology in Diagnosis and Treatment of Coronary Artery Disease

“…Dissimilar aggregation behaviors between G0 and G0/ZnPc nanomaterials were observed. Larger G0/ZnPc aggregation on the atheromatous plaque were reported [50]. Photodynamic therapy with PAMAM dendrimers could have a bright future in therapy of atherosclerosis.…”