Holes in valence bands of nanodiamonds discovered

Nanodiamonds are tiny crystals only a few nanometers in size. While they possess the crystalline structure of diamonds, their properties diverge considerably from those of their big brothers, because their surfaces play a ...

Explained: Bandgap

Why do some materials work well for making solar cells or light-emitting diodes (LEDs), while other materials don't? One key factor is having the right bandgap.

Solar cells will be fabricated by a single organic semiconductor

The fabrication of organic thin-film solar cells has been simplified due to new research findings. Where previously two types of organic semiconductors were required, doping the semiconductor fullerene with molybdenum oxide ...

Phagraphene, a relative of graphene, discovered

A group of scientists from Russia, the USA and China have predicted the existence of a new two-dimensional carbon material via computer generated simulation, a "patchwork" analogue of graphene called phagraphene. The results ...

Development of compact model for tunnel field-effect transistors

Japanese researchers have developed a compact model for circuit simulation to predict the circuit behavior of tunnel field-effect transistors (tunnel FETs). This device-operation model simulates current–voltage characteristics ...

Harnessing an unusual 'valley' quantum property of electrons

Yoshihiro Iwasa and colleagues from the RIKEN Center for Emergent Matter Science, the University of Tokyo and Hiroshima University have discovered that ultrathin films of a semiconducting material have properties that form ...

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