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jhowell · 03-03-2015, 09:57 PM

I haven't been able to locate a data sheet for Sunpartner Technologies Wysips® Crystal, but this page and this document indicate that the photovoltaic surface is 0.5mm thick, 90% transparent and produces 5mW-peak/cm².

Solar cells are measured assuming full direct sunlight of 1000W/m², i.e. 100mW/cm². So the Wysips is about 5% efficient. That is better than I expected for an almost transparent screen.

A 6" e-reader screen is about 100cm², so the peak output with full direct sunlight would be 0.5W. Indoor lighting would provide a small fraction of this power.

03-03-2015, 09:57 PM	#9
jhowell Grand Sorcerer Posts: 7,086 Karma: 91577715 Join Date: Nov 2011 Location: Charlottesville, VA Device: Kindles	I haven't been able to locate a data sheet for Sunpartner Technologies Wysips® Crystal, but this page and this document indicate that the photovoltaic surface is 0.5mm thick, 90% transparent and produces 5mW-peak/cm². Solar cells are measured assuming full direct sunlight of 1000W/m², i.e. 100mW/cm². So the Wysips is about 5% efficient. That is better than I expected for an almost transparent screen. A 6" e-reader screen is about 100cm², so the peak output with full direct sunlight would be 0.5W. Indoor lighting would provide a small fraction of this power. Last edited by jhowell; 03-03-2015 at 10:00 PM.