BURNABY, BC — On September 21, Day4 Energy Inc., a manufacturer of high performance, solar electric modules, announced further extension of its patented Day4 Electrode technology to back contact solar cells. Application of the Day4 Electrode for the interconnection of back contact solar cells offers a number of unique benefits, says the company. The technology is designed to reduce the number of photovoltaic (PV) cell-handling steps during the module assembly process to as low as one. Reduction in the number of handling steps is expected to result in an improvement in manufacturing yields as well as allowing for commercial implementation of larger, thinner and thus less expensive solar cells. Additionally, Day4 claims its Electrode's superior power collection properties permit the design of larger size back contact solar cells and as much as a ten-fold reduction in the amount of silver used in the manufacturing of high efficiency back contact solar cells.

At this time there are two main types of solar cells on the market. While conventional PV cells are designed with positive and negative electrical contacts positioned on opposite sides of the solar cell, back contact cells have both of these electrical contacts on the rear side.

"The successful extension of our unique manufacturing technology to back contact solar cells is yet another step toward establishing Day4 Electrode technology as a true next generation platform for the design and production of solar cells and modules" says George Rubin, president of Day4 Energy.

"Over the course of the last few years the Day4 Electrode technology has been enabling superior performance and technical innovation with conventional solar cell design approaches. When combined with high efficiency back contact solar cell design, the Day4 Electrode enables a whole array of cost reduction and further efficiency improvement possibilities that can make a real difference in the overall economics of solar power generation," adds Professor Leonid Rubin, chief technology officer of Day4 Energy. Day4 has filed a patent application for this novel method of interconnecting back contact cells used in solar electric modules.

For more information, please visit www.day4energy.com.

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