Solar cells with SiSn nanocrystals (Materials Today Energy 7, 2018, 87)

Silicon-tin alloy nanocrystals with quantum confinement effect for photovoltaics. Synthetized nanoparticles with average of 3 nm in diameter and optical bandgap of 0.81 eV at room temperature were obtained with a Si (0.88)/Sn (0.12) alloyed composition that corresponds to a ratio of about eight Si atoms for every Sn atom. The potential of silicon-tin nanocrystals as a photovoltaic material is assessed and an enhancement of the solar cells performance is demonstrated due to the extended spectral range and increased absorption. (Materials Today Energy 7, 2018, 87).

MABI & silicon nanocrystals (Nanoscale, 2017, 9, 18759)

Zero-dimensional methylammonium iodo bismuthate (MABI) can accommodate
silicon nanocrystals
, leading to solar cells with an enhancement in the short-circuit current. Through the material MABI, we demonstrate a promising alternative to the organometal trihalide perovskite class and present a model material for future composite third-generation photovoltaics. (Nanoscale, 2017, 9, 18759).

Transport layer with ultra-small CuO nanoparticles (Plasma Process Polym 14, 2017, 1600224)

CuO is a versatile p-type material for energy applications capable of imparting diverse functionalities by manipulating its band-energy diagram. CuO nanoparticles films have been used for the first time in all-inorganic third generation solar cell devices demonstrating highly effective functionalities as blocking layer (Plasma Process Polym 14, 2017, 1600224).

Charge carrier localised in MABI clusters (Nature Communications 8, 2017, 170)

Nanoclusters in organic-inorganic hybrid bismuth halide can be used for the splitting of a high-energy photons and this could bring advances in solar cells as they are arranged in a bulk crystalline material that can be processed from solution. The generation of two low-energy photons from a high-energy one has been observed in quantum dots and lanthanide ions due to the confinement of excitons and the transport of charge carriers from neighbouring ones (Nature Communications 8, 2017, 170).

Environmentally friendly quantum dots for next generation solar cells (Sust. Energy Fuels 1, 2017, 1611)

Shine on you crazy carbon! Nitrogen-doped carbon quantum dots (N-CQDs) are synthesized using a simple custom atmospheric pressure microplasma. The N-CQDs show interesting quantum confined optical properties that depend on the amount of nitrogen incorporation. The N-CQDs are incorporated into a photovoltaic device as the photoactive layer achieving an extraordinary open-circuit voltage of 1.8 V and a power conversion efficiency of 0.8% (champion device), amongst the highest reported to date for group IV and carbon based quantum dots (Sustainable Energy Fuels 1, 2017, 1611).

Gold nanoparticles synthesized in water droplets (Nano Lett, 2017, 17, 1336)

An entirely new method of nanoparticle chemical synthesis  based on liquid droplet irradiation with ultralow energy electrons. We have developed a source of electrons with energies close to thermal which leads to a number of important and unique benefits. The charged species, including the growing nanoparticles, are held in an ultrathin surface reaction zone which enables extremely rapid precursor reduction. (Nano Lett, 2017, 17, 1336).