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GEORGI NADJAKOV
P H O T O E L E C T R E T S


Photoelectret State of Matter

       Georgi Nadjakov discovered permanent internal photo-polarization in 1937. He made a electret with light and electricity. The new electret was called photo-electret. The previous type of electret, obtained by heat and electricity, were called by him thermoelectret.

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       Discovering the photoelectret state was the most considerable result of Georgi Nadjakov. It was formally recognized in Bulgaria after his death.

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Created: 10 December 2004
Updated: 3 January 2017