Availability
At the present time, the price of the raw materials cadmium and tellurium are a negligible proportion of the cost of CdTe solar cells and other CdTe devices. However, tellurium is an extremely rare element (1–5 parts per billion in the Earth's crust; see Abundances of the elements (data page)), and if CdTe were to be used in sufficiently large quantities (for example, to make enough solar cells to provide a significant proportion of worldwide energy consumption), tellurium availability could be a serious problem. See Cadmium telluride photovoltaics for more information.
Read more about this topic: Cadmium Telluride
Famous quotes containing the word availability:
“Since ... six weeks ago, there has been no day in which I have not had letters and visits on the subject of my nomination for the Presidency.... I say very little. I have in no instance encouraged any one to work to that end.... I have said the whole talk about me is on the score of availability. Let availability do the work then.”
—Rutherford Birchard Hayes (1822–1893)