Design guidelines for a highly efficient high-purity germanium (HPGe)-based double-heterojunction solar cell

Design and Simulation of a Highly Efficient InGaN/Si Double-Junction Solar Cell

A solar cell is an electronic device which not only harvests photovoltaic effect but also transforms light energy into electricity. In photovoltaic phenomenon, a P-N junction is created to form an empty region.  The presented paper aims at proposing a new highly efficient InGaN/Si double-junction solar cell structure. This cell is designed to be used in a real environmental situation, so only s...

The Best Choice of High Purity Germanium (HPGe) Detector

below and are based on some basic concepts about how the detection process works, how gamma rays penetrate materials, and the principles of gamma-ray spectroscopy. Unresolved choice issues can be reduced to a level where they have little or no impact on the resultant performance of the spectrometry system. This document explains how you can easily make a wise, well-informed choice. We assume yo...

Highly efficient organic tandem solar cell with a SubPc interlayer based on TAPC:C70 bulk heterojunction

We report a small molecule tandem organic photovoltaic (OPV) cell with a high power conversion efficiency (PCE) of 7.27%. This cell contains two subcells with an identical mixed active layer of C70:5 wt%TAPC (1,1-bis-(4-bis(4-methyl-phenyl)-amino-phenyl)-cyclohexane). The performance was dramatically improved by simply inserting a thin boron subphthalocyanine chloride (SubPc) interlayer, which ...

High-efficiency heterojunction solar cells on crystalline germanium substrates

Design of High Efficient InN Quantum Dot Based Solar Cell

A fundamental limitation in achieving ultra-high efficiency solar cells (> 50%) is the availability of materials and corresponding device structures. The InGaN material system offer substantial potential in developing ultra-high efficiency devices, both because of measurements indicating that the band gap on InN is lower than previously though and also due to other unique material properties, s...