As-grown bulk lifetime: Increasingly relevant for silicon solar cell performance


By Bernhard Mitchell, University of New South Wales; Daniel Chung, is a Ph.D. student at the Australian Centre for Advanced Photovoltaics at UNSW Australia; Zhen Xiong, is the chief engineer of ingot and wafer technology at Trina Solar; Pietro P. Altermatt, is the principal scientist at the State Key Laboratory for PV Science and Technology (SKL) at Trina Solar; Peter Geelan-Small, University of New South Wales; Thorsten Trupke, is a professor at the Australian Centre for Advanced Photovoltaics at UNSW

By the end of 2017 it is expected that boron-doped multicrystalline silicon (p-type mc-Si) wafers will have been used in more than 60% of the world’s manufactured solar cells.

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Welcome to the 38th edition of Photovoltaics International. There is every sign that 2018 is going to be a huge year for the industry as manufacturers continue investing in new tools and technologies. We will doubtless see many of the innovations whose evolution has been documented in these pages becoming increasingly mainstream. Sticking with bifacial solar, Fraunhofer ISE takes a wide-ranging look at a number of challenges surrounding the technology’s leap to widespread deployment. The Institute for Solar Energy Research Hamelin (ISFH) and Meyer Burger Technology AG present a novel bifacial module architecture. The University of New South Wales, Trina Solar and BT Imaging give a suggestion for predicting the variation in multicrystalline cell performance by measuring the bulk lifetime of ingots. We also have a look at PV recycling and lifecycle management from First Solar, PI Berlin’s assessment of PID issues in thin-film solar and TongWei presents a roadmap for PERC cells with 22% efficiency.

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