Key Customer Collaboration Combines Advanced Material and Process Technology to Set New Record

SUNNYVALE, Calif., May 16, 2012 –DuPont Innovalight announced today that Hyundai Heavy Industries (HHI) began mass production of solar cells using silicon ink technology from DuPont Innovalight. HHI has achieved over 19.5 percent median conversion efficiency with screen printed selective emitter solar cells made with DuPont™ Innovalight™ silicon ink on the HHI mass production line.

Hyundai Heavy Industries (HHI) has achieved over 19.5 percent efficiency in mass production with solar cells made using DuPont™ Innovalight™ silicon ink.

"HHI has manufactured the highest performance solar cells that we have seen in the industry so far using silicon ink technology," said Conrad Burke, general manager, DuPont Innovalight. "HHI is a very important customer for us, and we're pleased to recognize this accomplishment - it is the achievement of the combination of the HHI's mass production technology and the DuPont™ Innovalight™ silicon ink technology."

DuPont™ Innovalight™ silicon ink and processing technologies allow crystalline silicon solar cell manufacturers to boost output capacity, raise solar cell conversion efficiency as well as reduce costs with a simplified additional step to already installed manufacturing lines. Conversion efficiency refers to the percentage of electricity converted from sunlight in a solar cell.

To learn more about DuPont Innovalight, please visit http://innovalight.dupont.com.

DuPont™ Innovalight™ silicon inks are part of a broad and growing portfolio of products represented by DuPont Photovoltaic Solutions (DPVS), which connects science and technology from across the company on a global scale to help support the dramatic growth in the photovoltaic industry. To learn more, please visit http://photovoltaics.dupont.com.

DuPont (NYSE: DD) has been bringing world-class science and engineering to the global marketplace in the form of innovative products, materials, and services since 1802. The company believes that by collaborating with customers, governments, NGOs, and thought leaders we can help find solutions to such global challenges as providing enough healthy food for people everywhere, decreasing dependence on fossil fuels, and protecting life and the environment. For additional information about DuPont and its commitment to inclusive innovation, please visit http://www.dupont.com.