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

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

doi:10.1021/acsenergylett.9b01041

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

Journal Article · Thu Jun 20 00:00:00 EDT 2019 · ACS Energy Letters

DOI:https://doi.org/10.1021/acsenergylett.9b01041· OSTI ID:1562444

^[1]; ^[2]; Larson, Bryon W. ^[1]; Reid, Obadiah G. ^[3]; ^[1]

National Renewable Energy Lab., Golden, Colorado (United States). Chemistry and Nanoscience Center
Princeton Univ., Princeton, NJ (United States). Dept. of Electrical Engineering; Princeton Univ., Princeton, NJ (United States). Princeton Research Inst. for the Science and Technology of Materials
National Renewable Energy Lab., Golden, Colorado (United States). Chemistry and Nanoscience Center; Univ. of Colorado, Boulder, CO (United States). Renewable and Sustainable Energy Inst.

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. This study uses 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.

View Accepted Manuscript (DOE)

Research Organization:: Energy Frontier Research Centers (EFRC) (United States). Center for Hybrid Organic-Inorganic Semiconductors for Energy (CHOISE); National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: AC36-08GO28308

OSTI ID:: 1562444

Report Number(s):: NREL/JA--5900-74228

Journal Information:: ACS Energy Letters, Journal Name: ACS Energy Letters Journal Issue: 8 Vol. 4; ISSN 2380-8195

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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

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Cited By (1)

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