期刊
NANO LETTERS
卷 14, 期 9, 页码 5308-5314出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl5027452
关键词
carbon nanomaterials; photovoltaic; bulk heterojunction; nanowires
类别
资金
- Army Research Office Young Investigator Program [W911NF-14-1-0443]
- Department of Energy Basic Energy Sciences Award [DE-FG02-13ER46937]
- Argonne-Northwestern Solar Energy Research (ANSER) Center, an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Basic Energy Sciences [DE-SC0001059]
- National Science Foundation
- MITEI Seed Fund project
- NSF-MRSEC [DMR-1121262]
- Keck Foundation
- State of Illinois
Single-walled carbon nanotubes (SWCNTs) have highly desirable attributes for solution-processable thin-film photovoltaics (TFPVs), such as broadband absorption, high carrier mobility, and environmental stability. However, previous TFPVs incorporating photoactive SWCNTs have utilized architectures that have limited current, voltage, and ultimately power conversion efficiency (PCE). Here, we report a solar cell geometry that maximizes photocurrent using polychiral SWCNTs while retaining high photovoltage, leading to record-high efficiency SWCNTfullerene solar cells with average NREL certified and champion PCEs of 2.5% and 3.1%, respectively. Moreover, these cells show significant absorption in the near-infrared portion of the solar spectrum that is currently inaccessible by many leading TFPV technologies.
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