This invention integrates an organic light-emitting diode (OLED), a power-generation device (photovoltaic or PV cell), and an energy-storage device (lithium-ion battery or LIB) to power a grid-free lighting module. PV/LIB/LED voltage and capacity matching ensure maximal energy storage and optimal conversion efficiency.

The outermost layer (i.e. the one facing the external environment), consists of a transparent electrode. The material can therefore serve as a substitute for glass in windows.

Working inward, the next stratum generates power and includes a PV absorbing layer and PV electrode. Following this is the energy-utilizing component, an OLED layer that allows for the transportation and emission of electrons. Finally, an indium tin oxide (ITO) layer — flanked by batteries — rests atop the system's transparent substrate. With vast market potential, the invention could substantially reduce residential and commercial energy costs.

This technology is available for licensing. For more information, visit www.greendesignbriefs.com .



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Lighting Technology Magazine

This article first appeared in the January, 2012 issue of Lighting Technology Magazine.

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