Fully transparent and water impact resistant superhydrophobic coatings are of great importance for a range applications including photovoltaics, photonics, automotive windshields, building windows. A widely utilized approach to fabricate such involves solution-based deposition hydrophobic nanoparticles. central challenge is that these do not simultaneously offer high levels repellency, perfect transparence, resistance. Here we demonstrate end-grafted polymers present excellent interfaces...

In this work, both planar and textured, industrial scale (156 mm × 156 mm) single‐crystalline silicon ( Si ) solar cells have been fabricated using zinc oxide ZnO nanorods as antireflection coating ARC ). were grown in a few minutes via hydrothermal method within commercially available microwave oven. Relative improvement excess of 65% the reflectivity was observed for textured surfaces. Through nanorods, effective lifetime (τ eff measurements presented to investigate surface passivation...

Reflection and transmission through a solar cell can be significantly reduced using light-trapping structures. This approach applied to both crystalline thin-film cells improve the light absorption conversion efficiency of cell. In this study, vertically aligned Si nanowires were fabricated over large area via metal-assisted etching technique. Following detailed parametric industrial-size (156 mm × 156 mm) cells. The reflectivity from device surface was less than 5% for entire visible...

Abstract We present the feasibility of integrating substoichiometric molybdenum oxide (MoO x ) as hole‐selective rear contact into production sequence industrial scale p‐type crystalline silicon (c‐Si) solar cells. Thin films MoO are deposited directly on c‐Si by thermal evaporation at room temperature. It is found that Ag/MoO /p‐type structure exhibits low resistivity and modest surface recombination current density. The attained peak efficiency ( η fabricated cells 17.65% with V oc 626 mV,...

Integration of an array Ag nanoparticles in solar cells is expected to increase light trapping through field enhancement and plasmonic scattering.Requirement nanoparticle decoration cell surfaces or interfaces at the macro-scale, calls for a self-organized fabrication method such as thermal dewetting.Optical properties 2D are known be very sensitive their shape size.We show that these parameters depend on type substrate used.We observe average size decreases with increasing conductivity...

Metal-assisted etching (MAE) can be used to form antireflective and light-trapping structures on crystalline silicon solar cells. This method has been widely nanowires nanoholes their surfaces. In this study, the MAE technique with additional hole-injection mechanisms investigated surface nanostructures various shapes. The effect of each chemical's percentage, as well time, studied geometry optical performance. average reflection from was reduced less than 3% over spectrum. properties were...

The efficiency of a solar cell strongly depends on the interaction between incoming light beam and surface device. Any process enhances light-surface increases absorption probability light; thus, improves generated current, in turn. Generated current could be improved either by trapping or increased device thickness. Considering fabrication costs recombination losses, mechanically thin optically thick wafers are being focused terms properties. Surface texturing among other methods is an...

Nanotextured Si fabricated through metal-assisted chemical etching (MACE) technique exhibits a promising potential for producing antireflective layer photovoltaic (PV) application. In this study, novel single-step nickel (Ni) assisted was applied to produce an antireflective, nonporous (black Si) in aqueous solution containing hydrofluoric acid (HF), hydrogen peroxide (H2O2) and NiSO4 at 40 °C. Field emission scanning electron microscope used characterize different morphologies of the...

The texturing of silicon surfaces is a well-known method reducing the reflection from surface crystalline Si solar cell devices. With utilization diamond wires in recent advances wafer slicing technology, for multi-crystalline wafers by traditional acid-based technique has become difficult. Metal-Assisted Etching (MAE) been shown to be promising and low-cost alternative isotropic texturing. This paper reports, first time, new single-step Ni-assisted etching obtain nano-scale porous...

Surface plays a crucial role in the performance of crystalline silicon (cSi) based solar cells as it affects both electrical and optical properties. To minimize reflection from flat surface thus improve light trapping, cSi wafers must be textured. For mono-cSi cells, anisotropic alkaline etchants are commonly utilized to create pyramids on surface. However, this method is not viable for multi-crystalline (mc-Si) due presence different random crystallographic orientations. In work, we...

Texturing of a mono crystalline Si wafer aims to create light trapping structures reduce the reflection losses. Being cheap and efficient process, alkaline texturing wafers is commonly used in all industrial solar cell production lines. However, standard process with potassium hydroxide (KOH)‐based solutions isopropyl alcohol (IPA) addition suffers from instability, high material consumption, nonuniformities shape distribution pyramid formed on surface. In this work, we studied effect...

In this study, metal‐assisted etching (MAE) with nitric acid (HNO 3 ) as a hole injecting agent has been employed to texture multi‐crystalline silicon wafers. It was previously proven that addition of HNO enabled control surface texturing so form nano‐cone shaped structures rather than nanowires. The process parameters optimized for optically efficient have applied Fabrication p‐type Al:BSF cells carried out on textured samples thermal SiO 2 /PECVD‐SiN x stack passivation and screen printed...

Radial junction solar cells have been proposed as an alternative device geometry to conventional planar with its remarkable electrical and optical performance. In this geometry, densely packed nano/micropillars allow minority carrier collection in the radial direction shorten diffusion length p–n junction. Besides, reduced reflection from surface increased light trapping enhance cell efficiency. study, photolithography metal‐assisted etching (MAE) techniques are used form well‐ordered...

Abstract In this study, an external electrical cooling unit powered by PV modules was installed on the roof‐top of a bus to keep cooled interior atmosphere at certain temperature level during journey breaks. All solar cells used in project were fabricated Center for Solar Energy Research and Applications (GUNAM) and; then, integrated onto roof together with MAN Turkey A.Ş. For integration bus, reliable commercially applicable method has been developed. Following integration, illumination...