Solar cells rely on the efficient generation of electrons and holes and the subsequent
collection of these photoexcited charge carriers at spatially separated electrodes. High wafer …

The evolution of the contact scheme has driven the technology revolution of crystalline
silicon (c‐Si) solar cells. The state‐of‐the‐art high‐efficiency c‐Si solar cells such as silicon …

The basics of dopant-free materials used as carrier-selective layers at the surfaces and
interfaces in c-Si or poly-Si solar cells have been reviewed. Emphasis has been given to the …

We investigated properties of sputtered nanocrystalline gallium nitride (nc-GaN) to discuss
the potential of the nc-GaN as an electron selective contact in a silicon heterojunction (SHJ) …

This contribution presents the AM/AM and AM/PM characteristics of a 6-bit Phase and
Amplitude Setting Circuit realized in Gallium Nitride technology and operating at the Ku …

We discuss here optical losses in silicon heterojunction solar cells and strategies to
minimize them. Optical losses originate from most non-crystalline-silicon layers involved in …

Humankind's progress from the start of the industrial age to today's steady global decline in
poverty has led to a drastic increase in worldwide energy demand. This requirement cannot …