HPC Technology Know-How
The Holographic Planar Concentrator™ (HPC) is the key technology in Prism Solar products. The HPC acts as an extremely low-cost concentrator, increasing the energy seen by solar cells by as much as 3X, without mechanical tracking or the need for cooling systems.

HPC consists of holographic imprinted HPC Film, placed in strips along side solar cells. The HPC Film diffracts only wavelengths of sunlight that can be converted to energy by the solar cells. This energy is guided, via total internal reflection in the panel, to the cells.

HPC technology improves solar module efficiency by:

• collecting direct, low angle, diffuse and reflected light
• keeping cells near peak efficiency through low light conditions
• keeping cells near their optimal temperature by allowing unusable wavelengths to pass through
• generating more kilowatt hours while using less silicon.

Modules using HPC Film do not require mechanical tracking systems or cooling systems. Since they collect over 360 degrees they can be mounted on flat or pitched roofs, as screening walls or even in windows.

HPC technology can be incorporated into existing solar module designs to dramatically improve efficiency and reduce cost. Solar panels based on monocrystalline silicon, polycrystalline silicon, CdTe, CIGS or virtually any photovoltaic cells can benefit from HPC. The technology integrates easily into existing manufacturing, introducing few new processing steps while re-using almost all existing process equipment.

Prism Solar HPC Modules mounted on a rooftop in Tucson, Arizona.

Prism also designs solar modules that maximize the benefits of HPC technology. Prism shares its technological and manufacturing expertise with its partners, helping manufacturers to develop extremely competitive energy solutions in the shortest time possible.

Prism Solar Technologies has research and development, manufacturing and support facilities in New York and Arizona.