The effects of germanium tetrabromide addition to tetraphenyl porphyrin zinc (Zn-TPP)/fullerene (C60) bulk heterojunction solar cells were characterized. The light-induced charge separation and charge transfer were investigated by current density and optical absorption. Addition of germanium tetrabromide inserted into active layer of Zn-TPP/C60 as bulk heterojunction had a positive effect on th...

We propose a mode-evolution-based coupler for high saturation power germanium-on-silicon photodetectors. This coupler uniformly illuminates the intrinsic germanium region of the detector, decreasing saturation effects, such as carrier screening, observed at high input powers. We demonstrate 70% more photocurrent generation (9.1-15.5 mA) and more than 40 times higher opto-electrical bandwidth (0...

In recent years, sensing and communication applications have fueled important developments of group-IV photonics in the mid-infrared band. long-wave range, most platforms are based on germanium, which is transparent up to ∼15-µm wavelength. However, those limited by intrinsic losses complementary materials or require complex fabrication processes. To overcome these limitations, we propose suspe...

A new polymer with an alternating germanium-carbon backbone has been synthesized from 1,1-dimesitylneopentylgermene via addition polymerization using an anionic initiator.

in this experimental work the pressure induced phase transformation of silicon and germaniumhas been studied. it was shown that at a particular value of applied pressure, (pt), depending on the sampletemperature, the electrical resistance of the specimen falls off to a metallic state. the main goal of this studywas to find out how the phase transformation pressure, pt, for a p-type silicon vari...