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Status of high performance PV: polycrystalline thin-film tandems

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1 Author(s)
Symko-Davies, M. ; Nat. Renewable Energy Lab., Golden, CO, USA

The High-Performance Photovoltaic (HiPerf PV) Project was initiated by the U.S. Department of Energy to substantially increase the viability of photovoltaics (PV) for cost-competitive applications so that PV can contribute significantly to our energy supply and our environment. The HiPerf PV Project aims at exploring the ultimate performance limits of existing PV technologies, approximately doubling their sunlight-to-electricity conversion efficiencies during its course. This work includes bringing thin-film cells and modules toward 25% and 20% efficiencies, respectively; and developing multijunction concentrator cells and modules able to convert more than one-third of the sun's energy to electricity (i.e., 33% efficiency). This paper will address recent accomplishments of the NREL in-house research effort involving polycrystalline thin-film tandems, as well as the research efforts under way in the subcontracted area.

Published in:

Photovoltaic Specialists Conference, 2005. Conference Record of the Thirty-first IEEE

Date of Conference:

3-7 Jan. 2005