Cheap solar energy

I recently read a report describing a new technique for generating solar energy at a lower cost than with traditional photo-electric solar cell made of silicon.  The research have been conducted at the Nanomaterials Research Center of Massey University, New Zealand.
These new experimental photo-electric cells consists basically of dye-sensitized cells.  What’s this?  Basically, the researchers tried with differente dyes, usually organic or primarily derived from organic compounds.
For example, they use a green dye, very close -chemically speaking- to clorophyle.  Clorophyle is such an abundant substance in Nature, as long as is the main pigment used by the plants for the process of photosynthesis.  Exactly, every green leaf in the world has it.
Among the other dyes used, the haemoglobine is the main pigment used to obtain the final dyes.  That is, the pigment contained in human (and many animals also) blood. 
The use of porphyrins, which is the term that englobes the clorphyle, cyanine and haemoglobin as organic pigments is much more efficient in terms of energy conversion and also are more environmentally friendly.  Professor Ashton Partridge (Director), says that they now have the most efficient porphyrin dye in the world and aim to optimise and improve the cell construction and performance before developing the cells commercially.
In the field tests the new cells have proven to be more efficient to transform solar energy into electricity, which turns them into a practical, inexpensive solution for the places that have a generally cloudy sky.  They are also cheaper to be manufactured, as the process of purification of silicon is somewhat expensive.  It’s been calculated that the cells once produced at a commercial scale will cost only 10% of the price of the conventional photo-electric solar cells.
This is a good news for the people that feels a real concern for the planet’s health.  Vows to avoid global warming effects… in the near future.