Silicon dioxide (SiO2) has played a critical role in the development of high-efficiency silicon (Si)-based photovoltaic devices. Recently, it experienced renaissance as an interlayer many new contact passivating structures. Studies have extensively investigated recombination process at Si–SiO2 interface, however, only little is known about impact temperature on surface recombination. In this st...

In field operation, solar cells are exposed to constantly changing operating conditions. These conditions have an impact on energy yield. Present-day yield predictions mostly use linear correction coefficients derived from lab experiments. corrections neglect interactions between meteorological parameters like temperature and humidity. this study, we reverse approach by analyzing simulated cell...

Preliminary note The occurrence of working irregularities in journal bearing such as loss of geometry correctness, sudden failure of lubrication, overloading, etc., requires that serious damage of journal bearings have to be overcome in a short period of time. In such cases, it is important that the applied combinations of materials and lubricants do not have a tendency to seizure. Such critica...

Energy harvesting has become a promising and alternative solution to conventional energy generation patterns to overcome the problem of supplying autonomous electrical systems. More particularly, thermal energy harvesting technologies have drawn a major interest in both research and industry. Thermoelectric Generators (TEGs) can be used in two different operating conditions, under constant temp...

Air film cooling has been successfully used to cool gas turbine hot sections for the last half century. A promising technology is proposed to enhance air film cooling with water mist injection. Numerical simulations have shown that injecting a small amount of water droplets into the cooling air improves film-cooling performance significantly. However, previous studies were conducted at conditio...