Scope of surface-modified molecular and nanomaterials in gel/liquid forms for developing mechanically flexible DSSCs/QDSSCs

Abstract

In this perspective article, we discuss the possibilities of integrating liquefied organic and inorganic semiconducting materials with tunable optoelectronic properties into solvent-free fluidic systems of functional optoelectronic materials to generate flexible DSSCs/QDSSCs.

Review on Functional Electrolyte, Redox Polymers, and Solar Conversions in 3G Emerging Photovoltaic Technologies: Progress and Outlook

“…The native I 3 – /I – electrolyte showed a hypsochromic shift in the UV–visible spectrum, which results in dilution of the photocurrent in DSSCs and, hence, solar cell energy efficiency . Aqueous polysulfide does not suit long-term reversible activity owing to electrolyte leakage, corrosion and solvent evaporation issues in QDSSCs . Chemisorption of sulfur compounds on the surface of platinum causes retardation of electron transfer at the interface of cathode/electrolyte.…”

“…7 Aqueous polysulfide does not suit long-term reversible activity owing to electrolyte leakage, corrosion and solvent evaporation issues in QDSSCs. 8 Chemisorption of sulfur compounds on the surface of platinum causes retardation of electron transfer at the interface of cathode/ electrolyte. Polysulfide possesses high reactivity toward oxygen causing oxidation into S 2 O 3 2− species.…”

“…35,36 The redox-active functional components create quantum confinement (HOMO−LUMO energy) in the polymer. 8,37 The interfacial and functional interaction reduces unwanted charge recombi- nation between photoanode and electrolyte and thereby, recharges the functional activity of QDSCs. 38,39 Perovskite materials have long electron diffusion lengths and high absorption characteristic structures.…”

Flexible Nano-TiO2 Sheets Exhibiting Excellent Photocatalytic and Photovoltaic Properties by Controlled Silane Functionalization─Exploring the New Prospects of Wastewater Treatment and Flexible DSSCs

“…Recently, in the optoelectronic field, flexible devices 12 surged as fascinating new candidates that offer the unique advantage of malleability which makes carriage and installation of the devices on surfaces of any morphology easy where conventional solid-state devices fail because of their rigid and brittle nature. 13 On one hand, if TiO 2 nanoparticles are to be used in wastewater purification, from a practical point of view, it is desirable to make the TiO 2 -based photocatalytic sheet as flexible as possible, so that the water purifier can be operated under any mechanical conditions. On the other hand, to make mechanically flexible dye-sensitized solar cells (DSSCs), it is imperative to have its components, if not all, including the photoanode, in a flexible morphology.…”

“…If devices employed for these applications are flexible, instead of being rigid, it will be more advantageous from an operational point of view. Recently, in the optoelectronic field, flexible devices surged as fascinating new candidates that offer the unique advantage of malleability which makes carriage and installation of the devices on surfaces of any morphology easy where conventional solid-state devices fail because of their rigid and brittle nature . On one hand, if TiO 2 nanoparticles are to be used in wastewater purification, from a practical point of view, it is desirable to make the TiO 2 -based photocatalytic sheet as flexible as possible, so that the water purifier can be operated under any mechanical conditions.…”