DuPont expects to nearly triple its annual photovoltaic sales to more than $1 billion in 2012 based on strong fundamentals for long-term revenue growth in the photovoltaic solar energy market, combined with the company’s ability to deliver new technologies to the industry. “Through investments in materials, technology development and manufacturing, DuPont is accelerating its ability to deliver innovations that will improve the lifetime and efficiency of photovoltaic modules,” David B. Miller,...