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With the emergence of nanoscience as a major research initiative in almost every research university today, there have been intense research efforts in the fabrication of one-dimensional semiconductor nanostructures [1]. These one-dimensional semiconductor nanostructures are considered to be the critical components in a wide range of potential nanoscale device applications due to the availability...
Diamond has grown increasingly important in science and technology due to its extreme hardness, chemical inertness, high thermal conductivities, wide optical transparency and other unique properties [1–4]. In 2005, Hasegawa of AIST reported the low temperature growth (∼90°C) of nanocrystalline diamond in the European Diamond Conference in Toulouse [5]. This significant breakthrough affords the promise...
A highly conductive and transparent graphene film is deployed as an efficient intermediate layer (IML) in tandem organic photovoltaic cells. Tandem cells utilizing transition metal oxide modified graphene IML demonstrate a high open circuit voltage (Voc) of 1.13 V in series connection. The value of Voc from tandem cell is very close to the sum of Voc attained from two individual subcells (0.58 V)...
Diffusion and energy relaxation of hot carriers in graphene are studied by high-resolution pump-probe techniques. Diffusion coefficients, energy relaxation rates and optical phonon emissions time are determined.
We developed a solution-processed ionic liquid functionalized carbon nanoparticles (ILCNs) material which was synthesized by electrochemical exfoliation graphite electrode in ionic liquid and water mixture solution. The sp2-bonds electronic structure of the carbon nanoparticles in ILCNs can decrease tunneling barrier height.
Atomic multi-layer graphene film as a saturable absorber was first demonstrated to be able to mode lock Ytterbium-doped fiber lasers at wavelength around 1 um. Determined by the operation conditions, single or multiple dissipative solitons (DSs) can be generated in the fiber lasers. DSs with pulse duration of 550~630 ps were generated. As graphene can also be used to mode lock erbium-doped fiber lasers...
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