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Cleantech

A look at how nanotechnology benefits solar cells, water treatment, wind turbines and other clean energy applications

Lab talk

Nanotechnology research highlights: find out what the authors have to say

Lithium ion batteries: nanostructured composites improve storage properties

Introducing reduced graphene oxide and carbon nanotubes can stabilize transition metal oxides.

Boron nitride can harvest mechanical vibrations at the nanoscale

Piezoelectric properties provide an all-in-one solution to energy harvesting.

Going beyond the traditional electromagnetic generator

Combining existing technology with new triboelectric generators has promise for portable electronics

How does size affect the piezoelectric properties of ZnO nanowires?

Surface effects are negligible for nanowire diameters larger than 15 Å

Endotaxial nanostructures and mass fluctuation drive up thermoelectric efficiency

Materials experts modify the thermoelectric properties of low Te-content samples to recover waste heat

Modified deposition structure delivers super-high density Si quantum dot thin film

Gradient Si-rich oxide multilayers produce material with improved photovoltaic properties

Silicon nanowire based large-scale solar cells receive upgrade

Dielectric passivation technology improves device performance

Graphene QDs on aligned carbon nanotubes ramp up supercapacitor performance

Hybrid arrays exhibit more than 200% improvement over bare carbon nanotube electrodes

Boron nitride whiskers exhibit extremely high surface area

Porous material could store hydrogen or help to clean up wastewater

Improving the performance of dye-sensitized solar cells at larger cell sizes

Using a metallic Ti foil layer instead of FTO conductive glass and replacing part of the TiO2 nanoparticle layer with a TiO2 nanotube layer in the anode benefits bigger devices.

Ions measure roughness of buried interfaces

Custom SIMS set-up characterizes functional multilayer structures grown using ALD.

Energy storage team designs carbon-encapsulated Fe3O4 nanocrystals

Simple glucose treatment could help to expand the electronic or electrochemical applications of metal oxides.

Li-ion batteries benefit from hierarchical LiFePO4/C

LiFePO4/C cathode offers excellent Li storage performance and high tap density.

CdTe coating improves photo-electron conversion efficiency of ZnO/CdS coaxial nanorods

Stepwise band structure of ZnO/CdS/CdTe photoelectrode helps to improve charge separation and extend electron diffusion length.

Hybrid nanomaterial enhances performance of thermoelectric generator

Asymmetric illumination scheme boosts current in prototype devices.

Imprinted nanovoids trap light in solar cells

Scalable and inexpensive technique suits organic thin-film devices.

1D magnetite nanostructures obtained without templates for energy applications

Fe3O4 nanobelts synthesized by a one-pot and template-free hydrothermal method using Na2CO3 and FeCl2 as reactants.

Flexible organic solar cells equipped with graphene electrodes

Reduced sheet resistance of chemically doped graphene film improves device performance.

Mild post-deposition treatments benefit colloidal nanocrystal solar cells

Use of dilute carboxylic acid solutions improves the photovoltaic response of tetrapod-shaped colloidal nanocrystal solids.

Sandia team demonstrates III-nitride nanowire array solar cells

Nanowire architecture could lead to higher efficiencies by overcoming strain limitations and guiding light via air voids.