Carrier lifetime (τ) and back surface recombination velocity (S) are determined from transient measurements with solar cells in open circuit voltage conditions. A detailed analysis of the theory of a new experimental practice is given. The cell is illuminated at any injection level and all...

To choose the most suitable solar cell for desert climate, measurements and analysis of the integrated spectral response (ISR) and the electrical power over 32 spectral bands for monocrystalline, polycrystalline and amorphous solar cells have been carried out in Helwan during several seasons...

Experimental investigation and relevant analysis on a solar cell driven, thermoelectric refrigerator has been conducted. To make the device portable, daytime use and nighttime use of the refrigerator are treated in different ways. Solar cells are applied to power the refrigerator in the day....

Simple dye-sensitized solar cells were developed using blackboard chalk as a substrate for mixed ZnO and SnO2 films that were sensitized with Mercurochrome (Merbromine) dye. Graphite pencil “leads” were used as counter electrodes for the cells and the electrolyte consisted of an aqueous...

In this work, we present the structural quality of polycrystalline silicon films formed by high-temperature chemical vapor deposition (CVD) on mullite ceramics coated with spin-on flowable oxides (FOx) serving as intermediate layers (ILs). The average grain size and the size distribution were...

A new method named Chemical Physics (CP) method was developed to produce solar grade silicon feedstock at a company in China. In this paper the characteristic of the solar grade silicon made by CP method was analysed. The results show that the purity of solar grade silicon is above 5 N and most...

In the present study, the azimuth and solar altitude angles of the sun were calculated for a period of 1 year at 37.6° latitude in the Northern hemisphere, where Turkey is located, and according to these angles, an electromechanical system which tracks the sun on both axes and which is...

Tandem solar cells represent an elegant way of overcoming the efficiency limits of single-junction solar cells and reducing the light-induced degradation of amorphous silicon films. Stacked structures consisting of an amorphous silicon top cell and a microcrystalline silicon bottom cell allow a...

Dye-sensitized ZnO and TiO2 photoelectrochemical cells were constructed using recycled waste materials and readily accessible household chemicals to assess whether it would be feasible for low-income communities to utilise solar energy for drinking water chlorination. Prussian Blue sensitized...

The development of crystalline silicon solar cells is traced from their invention to the present day, with an emphasis on the major advances (“milestones”) along the way. The survey covers cells for power generation in space as well as those for terrestrial applications.