Amtech, Yingli Green Energy and ECN to develop N-type MWT high efficiency PV cell and module

TEMPE, USA: Amtech Systems Inc. announced that its solar division, Tempress Systems, has joined Yingli Green Energy Holding Co. Ltd, a leading solar energy company and one of the world's largest vertically integrated photovoltaic manufacturers, which markets its products under the brand “Yingli Solar,” and the Energy Research Centre of the Netherlands (“ECN”), a leading solar research center in Europe, in a three-party research collaboration on the N-type Metal Wrap Through (N-MWT) PV cell and module technology.

This joint project was an extension of Project PANDA, which was kicked off in 2009. As of the date of this press release, a cell efficiency of 19.7 percent and a module efficiency of 17.6 percent have been achieved in the laboratory, respectively.

The N-MWT PV cell technology is expected to reduce up to 40 percent of the metal coverage comparing to standard crystalline cells, which leads to approximately 1.5 percent relative cell efficiency gain. ECN has also shown that the PV modules based on N-MWT technology can be made with thin cells at high yield, which demonstrates the potential to reduce the wafer thickness and silicon consumption, leading to a large cost reduction potential.

J.S. Whang, CEO of Amtech, commented, "We are again pleased that the PANDA technology using our advanced diffusion technology, combined with MWT, is enabling Yingli to take the next step to higher module efficiencies. Partnering in technology solutions is part of our long-term strategy."

Yingli Green Energy announced the achievements of this three-party research collaboration in a press release dated September 7, 2011.