Phosphorus solar abundance

A photovoltaic cell (often called a solar cell) consists of layers of semiconductor materials with different electronic properties. In most of today s solar cells the semiconductor is silicon, an abundant element in the earth s crust. By doping (i.e., chemically introducing impurity elements) most of the silicon with boron to give it a positive or p-type electrical character, and doping a thin layer on the front of the cell with phosphorus to give it a negative or n-type character, a transition region between the two types... 

Wolf D. and Palme H. (2001) The solar system abundance of phosphorus and titanium and the nebular volatihty of phosphorus. Meteorit. Planet. Sci. 36, 559-571. 

Fig. 10. Percentage distribution of phosphorus between different phases in a solar composition gas as a function of temperature for a total pressure of 10-4 bar. Gaseous species are indicated with (g), all other species are condensed phases. Hydroxyapatite (Ca5(PC>4)30H) has an abundance of 70% of total P, but occurs only at 300 K (and lower), and is therefore not shown...

Nitrogen is the most abundant pnictide element in the solar system, in the sea, in the air, in the soil and in living organisms. It does, however, appear to take second place to phosphorus in the earth s crustal rocks (Table 2.4). The remaining pnictide elements, arsenic, antimony and bismuth, are all present in considerably smaller quantities than either nitrogen or phosphorus in all these media (Tables 2.2 and 2.5). 

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