The effect of the metal and selenium precursors on the properties of NbSe₂and Nb₂Se₉nanostructures and their application in dye-sensitized solar cells

Abstract

NbSe2 and Nb2Se9 as counter electrodes in dye-sensitized solar cells.

Novel 2D-AuSe nanostructures as effective platinum replacement counter electrodes in dye-sensitized solar cells

“…The low FF values are due to the high R s values and low shunt resistance ( R sh ) values which are caused by increasing recombination at interfaces of the DSSCs. 40 The lower efficiency of the Pt CE is due to recombination as indicated by the low V oc and FF; this can be attributed to the roughness of the thin film which creates recombination sites. 41 The PCEs of the α-AuSe CE is comparable to some of the reported PCEs of different layered materials as CEs.…”

Synthesis of 2D α‐GeTe Single Crystals and α‐GeTe/WSe2 Heterostructures with Enhanced Electronic Performance

“…[9] And as one typical of 2D magnetic materials, CrI 3 displays ferromagnetism in a monolayer, anti-ferromagnetism in a bilayer, and back to ferromagnetism in the trilayer and bulk. [10] Metallic 2D materials (e.g., TaS 2 , [11] TaSe 2 , [12] NbSe 2 , [13] T d -MoTe 2 , [14] and VS 2 , [15] et al) have abstracted considerable research interests for their rich physical properties, such as superconductivity and charge-density waves, etc. For example, NbSe 2 has been reported to exhibit thickness-dependent superconducting properties with a transition temperature increasing from 1.0 to 4.56 K as layer number increases from monolayers to 10 layers.…”

“…Metallic 2D materials (e.g., TaS 2 , [ 11 ] TaSe 2 , [ 12 ] NbSe 2 , [ 13 ] T d ‐MoTe 2 , [ 14 ] and VS 2 , [ 15 ] et al.) have abstracted considerable research interests for their rich physical properties, such as superconductivity and charge‐density waves, etc.…”

Colloidal synthesis of 1-D van der Waals material Nb2Se9: study of synergism of coordinating agent in a co-solvent system

“…7,8 Only recently has niobium selenide been synthesised using solution-based colloidal synthesis, which addresses the issue of high reaction temperature and high vacuum processing, additional post-synthetic treatments, scalability, and expensive apparatus. 7,9 The colloidal synthesis enables access to thermodynamic and kinetic growth control of nanoparticles by the greatest variety of reaction conditions, such as concentration of reactants, growth time and temperature, heating rate, material sources, stabilisers, and medium identity. While these systematic variations of tuneable parameters increase the overall complexity of the procedure, they allow for exquisite governance over nucleation and growth mechanism, mediating regulated size and morphological control.…”

“…7,8 Only recently has niobium selenide been synthesised using solution-based colloidal synthesis, which addresses the issue of high reaction temperature and high vacuum processing, additional post-synthetic treatments, scalability, and expensive apparatus. 7,9…”