journal article·2019-08-09Open access

Rapid Charge-Transfer Cascade through SWCNT Composites Enabling Low-Voltage Losses for Perovskite Solar Cells

Severin N. Habisreutinger, Nakita K. Noel, Bryon W. Larson, Obadiah G. Reid, Jeffrey L. Blackburn

ACS Energy Letters· Volume 4· Issue 8

Abstract

Good charge selective contacts are vital to achieving efficient perovskite solar cells. The selectivity of such a contact is determined by its energetic offset or alignment with the bands of the perovskite absorber and, most importantly, by its interfacial recombination losses. In this study, we use single-walled carbon nanotubes (SWCNTs) as a high-mobility hole extraction layer at the interface with a perovskite absorber. When employed as a charge-transfer cascade-like structure with a low-mobility hole-selective contact, this configuration can suppress the interfacial recombination through the rapid removal of holes from the interface region. Reducing these recombination losses in turn results in very low voltage losses of less than 340 mV in n-i-p perovskite solar cells.
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Research context

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Organic Electronics and Photovoltaics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Chemistry and Nanoscience Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80401, United States

Department of Electrical Engineering, Princeton University, 41 Olden Street, Princeton, New Jersey 08544, United States

Princeton Research Institute for the Science and Technology of Materials, Princeton University, 70 Prospect Ave, Princeton, New Jersey 08544, United States

Renewable and Sustainable Energy Institute, University of Colorado at Boulder, Boulder, Colorado 80309, United States

Funding

Basic Energy Sciences · National Renewable Energy Laboratory · Princeton Center for Complex Materials · Center for Hybrid Organic Inorganic Semiconductors for Energy

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