Cavendish Hospital

Light-emitting diodes based on conjugated polymers

Iterative minimization techniques for<i>ab initio</i>total-energy calculations: molecular dynamics and conjugate gradients

This article describes recent technical developments that have made the total-energy pseudopotential the most powerful ab initio quantum-mechanical modeling method presently ava...

Surface energy and the contact of elastic solids

This paper discusses the influence of surface energy on the contact between elastic solids. Equations are derived for its effect upon the contact size and the force of adhesion ...

The Deformation and Ageing of Mild Steel: III Discussion of Results

An attempt is made here to explain the observed phenomena in the yielding and ageing of mild steel, described in two previous papers, in the general terms of a grain-boundary th...

New Method for High-Accuracy Determination of the Fine-Structure Constant Based on Quantized Hall Resistance

Measurements of the Hall voltage of a two-dimensional electron gas, realized with a silicon metal-oxide-semiconductor field-effect transistor, show that the Hall resistance at p...

The transition metal dichalcogenides discussion and interpretation of the observed optical, electrical and structural properties

Abstract The transition metal dichalcogenides are about 60 in number. Two-thirds of these assume layer structures. Crystals of such materials can be cleaved down to less than 10...

Organic solar cells based on non-fullerene acceptors

Resonating valence bonds: A new kind of insulator?

High Photoluminescence Efficiency and Optically Pumped Lasing in Solution-Processed Mixed Halide Perovskite Semiconductors

The study of the photophysical properties of organic-metallic lead halide perovskites, which demonstrate excellent photovoltaic performance in devices with electron- and hole-ac...

Enhanced photovoltage for inverted planar heterojunction perovskite solar cells

Perovskite layers make the grade Inverted planar perovskite solar cells offer opportunities for a simplified device structure compared with conventional mesoporous titanium oxid...