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Four-terminal perovskite/c-Si tandem PV technology

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By Dong Zhang, ECN part of TNO – Solliance, Eindhoven; Stefan Luxembourg, ECN part of TNO, Petten, The Netherlands; Gianluca Coletti, ECN part of TNO, Petten, The Netherlands; Sjoerd Veenstra, ECN part of TNO – Solliance, Eindhoven; Bart Geerligs, ECN part of TNO, Petten, The Netherlands

Two factors have coincided to stimulate the recent spur in interest for hybrid tandem PV technology based on crystalline silicon – the fact that balance-of-system (BOS) costs are increasingly dominating turnkey system costs, which strengthens the effect of high efficiency in reducing Wp costs, and the discovery of perovskite solar cells as a promising low-cost wide-band-gap partner for crystalline silicon (c-Si). This paper presents the progress and analysis of four-terminal (4T) perovskite/c-Si tandem technology at ECN part of TNO, with perovskite technology development carried out within the Solliance research organization.

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Photovoltaics International Archive
Welcome to the tenth anniversary edition of Photovoltaics International. Over the past decade this journal has documented the latest developments in the fast-changing of world PV technology, bringing you exclusive insights from researchers working at the industry’s cutting edge. Over that time the pace of change has been astonishing, so much so that it scarcely seems as though one new technology is accepted before the next arrives on the scene. So seems to be the case with the passivated emitter and rear cell (PERC), which having become the technology upgrade of choice across the industry now appears to have a successor in waiting. In this edition researchers at Fraunhofer ISE look at so-called tunnel oxide passivated contact (TOPCon) technology as a follow-up to PERC. Meanwhile, a team from TÜV Rheinland takes a deep dive into the vexed question of how the industry can most usefully define the benefits of bifacial technology. At the other end of the value chain, US-based 1366 Technologies gives an account of its contribution to reducing costs in wafer manufacturing, a significant ongoing expense in industrial PV cell production and thus a key focus for efforts to drive down the levelized cost of solar-generated electricity. Elsewhere in this edition, Canadian Solar outlines some of the solutions it has developed for tackling light-induced degradation in multi-PERC cells and modules, a persistent challenge with PERC technology. In this edition our deputy editor Tom Kenning reports from the recent PV CellTech event in Malaysia, where the ‘Who’s Who’ of the PV manufacturing world gathered to debate the current state of play in solar technology.

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